./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/tcpy.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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:15:09,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:15:09,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:15:09,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:15:09,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:15:09,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:15:09,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:15:09,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:15:09,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:15:09,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:15:09,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:15:09,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:15:09,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:15:09,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:15:09,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:15:09,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:15:09,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:15:09,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:15:09,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:15:09,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:15:09,856 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:15:09,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:15:09,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:15:09,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:15:09,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:15:09,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:15:09,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:15:09,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:15:09,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:15:09,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:15:09,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:15:09,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:15:09,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:15:09,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:15:09,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:15:09,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:15:09,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:15:09,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:15:09,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:15:09,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:15:09,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:15:09,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:15:09,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:15:09,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:15:09,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:15:09,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:15:09,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:15:09,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:15:09,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:15:09,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:15:09,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:15:09,908 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:15:09,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:15:09,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:15:09,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:15:09,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:15:09,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:15:09,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:15:09,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:15:09,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:15:09,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:15:09,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:15:09,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:15:09,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:15:09,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:15:09,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:15:09,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:15:09,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:15:09,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:15:09,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:15:09,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:15:09,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:15:09,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:15:09,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:15:09,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:15:09,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:15:09,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-07-13 10:15:10,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:15:10,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:15:10,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:15:10,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:15:10,181 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:15:10,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/tcpy.c [2022-07-13 10:15:10,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093d3ce97/ce8b16c1847445909c4c95fb75e08e82/FLAG3c8fcd3a8 [2022-07-13 10:15:10,549 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:15:10,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c [2022-07-13 10:15:10,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093d3ce97/ce8b16c1847445909c4c95fb75e08e82/FLAG3c8fcd3a8 [2022-07-13 10:15:11,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093d3ce97/ce8b16c1847445909c4c95fb75e08e82 [2022-07-13 10:15:11,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:15:11,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:15:11,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:15:11,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:15:11,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:15:11,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1eb6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11, skipping insertion in model container [2022-07-13 10:15:11,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:15:11,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:15:11,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-07-13 10:15:11,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:15:11,165 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:15:11,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-07-13 10:15:11,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:15:11,202 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:15:11,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11 WrapperNode [2022-07-13 10:15:11,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:15:11,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:15:11,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:15:11,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:15:11,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,248 INFO L137 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-07-13 10:15:11,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:15:11,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:15:11,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:15:11,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:15:11,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:15:11,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:15:11,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:15:11,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:15:11,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (1/1) ... [2022-07-13 10:15:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:15:11,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:15:11,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:15:11,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:15:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:15:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 10:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:15:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:15:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:15:11,402 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:15:11,403 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:15:11,512 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:15:11,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:15:11,517 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:15:11,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:15:11 BoogieIcfgContainer [2022-07-13 10:15:11,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:15:11,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:15:11,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:15:11,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:15:11,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:15:11" (1/3) ... [2022-07-13 10:15:11,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ff8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:15:11, skipping insertion in model container [2022-07-13 10:15:11,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:11" (2/3) ... [2022-07-13 10:15:11,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ff8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:15:11, skipping insertion in model container [2022-07-13 10:15:11,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:15:11" (3/3) ... [2022-07-13 10:15:11,526 INFO L111 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-07-13 10:15:11,538 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:15:11,539 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:15:11,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:15:11,600 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27f045c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b3abce1 [2022-07-13 10:15:11,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:15:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 10:15:11,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:11,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:11,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:11,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1608152958, now seen corresponding path program 1 times [2022-07-13 10:15:11,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:11,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026668679] [2022-07-13 10:15:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:11,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026668679] [2022-07-13 10:15:11,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026668679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:11,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:11,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:15:11,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959584787] [2022-07-13 10:15:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:15:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:15:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:15:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:15:11,888 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2022-07-13 10:15:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:11,904 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2022-07-13 10:15:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:15:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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 [2022-07-13 10:15:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:11,913 INFO L225 Difference]: With dead ends: 37 [2022-07-13 10:15:11,914 INFO L226 Difference]: Without dead ends: 17 [2022-07-13 10:15:11,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:15:11,930 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:11,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:15:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-13 10:15:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-13 10:15:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-13 10:15:11,957 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-07-13 10:15:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:11,957 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-13 10:15:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2022-07-13 10:15:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-13 10:15:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 10:15:11,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:11,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:15:11,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1873320706, now seen corresponding path program 1 times [2022-07-13 10:15:11,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76572066] [2022-07-13 10:15:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:12,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76572066] [2022-07-13 10:15:12,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76572066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:12,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:12,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 10:15:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554723420] [2022-07-13 10:15:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:15:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:15:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:15:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 10:15:12,050 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-07-13 10:15:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:12,076 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-07-13 10:15:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:15:12,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2022-07-13 10:15:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:12,078 INFO L225 Difference]: With dead ends: 31 [2022-07-13 10:15:12,078 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 10:15:12,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 10:15:12,079 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:12,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:15:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 10:15:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-07-13 10:15:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-13 10:15:12,084 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-07-13 10:15:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:12,084 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-13 10:15:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-07-13 10:15:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-13 10:15:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 10:15:12,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:12,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 10:15:12,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash -270521828, now seen corresponding path program 1 times [2022-07-13 10:15:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:12,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69292963] [2022-07-13 10:15:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69292963] [2022-07-13 10:15:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69292963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:15:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085799892] [2022-07-13 10:15:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:12,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:12,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:15:12,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:15:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:15:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:12,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:15:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:12,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:15:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:12,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085799892] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:15:12,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:15:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 10:15:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256991622] [2022-07-13 10:15:12,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:15:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 10:15:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:15:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 10:15:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:15:12,366 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-07-13 10:15:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:12,426 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-07-13 10:15:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:15:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 10:15:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:12,428 INFO L225 Difference]: With dead ends: 33 [2022-07-13 10:15:12,429 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 10:15:12,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:15:12,433 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:12,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:15:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 10:15:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-07-13 10:15:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2022-07-13 10:15:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-07-13 10:15:12,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2022-07-13 10:15:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:12,442 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-07-13 10:15:12,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-07-13 10:15:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-07-13 10:15:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 10:15:12,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:12,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:12,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:12,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:12,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:12,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1874059334, now seen corresponding path program 2 times [2022-07-13 10:15:12,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:12,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654511717] [2022-07-13 10:15:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:12,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654511717] [2022-07-13 10:15:12,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654511717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:12,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:12,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:15:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107434074] [2022-07-13 10:15:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:15:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:15:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:15:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:15:12,809 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:12,847 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-07-13 10:15:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:15:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 10:15:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:12,849 INFO L225 Difference]: With dead ends: 35 [2022-07-13 10:15:12,849 INFO L226 Difference]: Without dead ends: 28 [2022-07-13 10:15:12,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:15:12,850 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:12,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:15:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-13 10:15:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-07-13 10:15:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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) [2022-07-13 10:15:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-07-13 10:15:12,856 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2022-07-13 10:15:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:12,856 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-13 10:15:12,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-07-13 10:15:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 10:15:12,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:12,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:12,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 10:15:12,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:12,858 INFO L85 PathProgramCache]: Analyzing trace with hash 265660728, now seen corresponding path program 1 times [2022-07-13 10:15:12,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:12,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463467272] [2022-07-13 10:15:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:12,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:13,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:13,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463467272] [2022-07-13 10:15:13,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463467272] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:15:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998845285] [2022-07-13 10:15:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:13,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:15:13,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:15:13,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:15:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:13,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 10:15:13,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:13,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-13 10:15:13,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:15:13,269 INFO L356 Elim1Store]: treesize reduction 26, result has 40.9 percent of original size [2022-07-13 10:15:13,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 33 [2022-07-13 10:15:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:13,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:15:13,389 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:15:13,390 INFO L390 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 474 treesize of output 450 [2022-07-13 10:15:13,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 184 [2022-07-13 10:15:24,848 INFO L356 Elim1Store]: treesize reduction 7, result has 41.7 percent of original size [2022-07-13 10:15:24,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 77 [2022-07-13 10:15:24,903 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:15:24,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 690 treesize of output 652 [2022-07-13 10:15:25,392 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-13 10:15:25,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 356 treesize of output 343 [2022-07-13 10:15:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:25,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998845285] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:15:25,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:15:25,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-07-13 10:15:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051016305] [2022-07-13 10:15:25,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:15:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:15:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:15:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:15:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:15:25,471 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:25,594 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-07-13 10:15:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 10:15:25,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 [2022-07-13 10:15:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:25,595 INFO L225 Difference]: With dead ends: 29 [2022-07-13 10:15:25,595 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 10:15:25,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-07-13 10:15:25,596 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:25,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 67 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:15:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 10:15:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-07-13 10:15:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-07-13 10:15:25,601 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2022-07-13 10:15:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:25,601 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-07-13 10:15:25,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-07-13 10:15:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 10:15:25,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:25,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:25,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:25,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:25,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1994055598, now seen corresponding path program 1 times [2022-07-13 10:15:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:15:25,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580441115] [2022-07-13 10:15:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:15:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:15:26,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580441115] [2022-07-13 10:15:26,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580441115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:15:26,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68982261] [2022-07-13 10:15:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:26,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:15:26,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:15:26,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:15:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 10:15:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:26,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-13 10:15:26,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-13 10:15:26,359 INFO L356 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-07-13 10:15:26,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-07-13 10:15:26,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:15:26,515 INFO L356 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-07-13 10:15:26,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 23 [2022-07-13 10:15:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:26,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:15:28,612 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (store (let ((.cse1 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (* 4 c_~SIZE~0))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|) (+ .cse1 (- 4) .cse2 |ULTIMATE.start_main_~acopy~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse1 (- 4) .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_103))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4))))) is different from false [2022-07-13 10:15:29,225 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (let ((.cse1 (* 4 c_~SIZE~0))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|) (+ (- 4) .cse1 |ULTIMATE.start_main_~acopy~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (- 4) .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (= (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| (store .cse0 |ULTIMATE.start_main_~acopy~0#1.offset| v_ArrVal_103)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2022-07-13 10:15:30,875 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:15:30,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4770 treesize of output 3839 [2022-07-13 10:15:30,927 INFO L356 Elim1Store]: treesize reduction 58, result has 52.5 percent of original size [2022-07-13 10:15:30,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 6191 treesize of output 5617 [2022-07-13 10:15:30,974 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:15:30,974 INFO L390 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 6363 treesize of output 5919 [2022-07-13 10:15:30,994 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-13 10:15:31,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:15:31,200 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:545) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:348) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-13 10:15:31,204 INFO L158 Benchmark]: Toolchain (without parser) took 20198.44ms. Allocated memory was 92.3MB in the beginning and 251.7MB in the end (delta: 159.4MB). Free memory was 53.9MB in the beginning and 149.5MB in the end (delta: -95.5MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2022-07-13 10:15:31,204 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 10:15:31,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.83ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 53.7MB in the beginning and 97.3MB in the end (delta: -43.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-13 10:15:31,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.67ms. Allocated memory is still 119.5MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 10:15:31,205 INFO L158 Benchmark]: Boogie Preprocessor took 35.22ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 10:15:31,205 INFO L158 Benchmark]: RCFGBuilder took 234.37ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 83.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 10:15:31,205 INFO L158 Benchmark]: TraceAbstraction took 19682.96ms. Allocated memory was 119.5MB in the beginning and 251.7MB in the end (delta: 132.1MB). Free memory was 82.6MB in the beginning and 149.5MB in the end (delta: -66.9MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2022-07-13 10:15:31,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.83ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 53.7MB in the beginning and 97.3MB in the end (delta: -43.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.67ms. Allocated memory is still 119.5MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.22ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 234.37ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 83.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19682.96ms. Allocated memory was 119.5MB in the beginning and 251.7MB in the end (delta: 132.1MB). Free memory was 82.6MB in the beginning and 149.5MB in the end (delta: -66.9MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-13 10:15:31,234 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/tcpy.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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:15:33,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:15:33,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:15:33,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:15:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:15:33,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:15:33,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:15:33,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:15:33,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:15:33,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:15:33,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:15:33,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:15:33,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:15:33,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:15:33,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:15:33,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:15:33,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:15:33,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:15:33,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:15:33,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:15:33,216 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:15:33,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:15:33,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:15:33,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:15:33,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:15:33,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:15:33,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:15:33,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:15:33,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:15:33,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:15:33,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:15:33,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:15:33,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:15:33,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:15:33,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:15:33,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:15:33,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:15:33,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:15:33,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:15:33,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:15:33,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:15:33,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:15:33,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 10:15:33,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:15:33,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:15:33,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:15:33,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:15:33,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:15:33,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:15:33,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:15:33,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:15:33,266 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:15:33,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:15:33,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:15:33,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:15:33,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:15:33,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:15:33,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:15:33,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:15:33,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:15:33,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:15:33,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:15:33,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:15:33,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:15:33,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:15:33,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:15:33,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:15:33,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:15:33,280 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 10:15:33,280 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 10:15:33,280 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:15:33,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:15:33,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:15:33,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 10:15:33,281 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-07-13 10:15:33,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:15:33,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:15:33,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:15:33,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:15:33,613 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:15:33,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/tcpy.c [2022-07-13 10:15:33,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a71b64ee/f479f2c071374cfd8a7674ea7e2e513f/FLAG145f81c7f [2022-07-13 10:15:34,101 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:15:34,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c [2022-07-13 10:15:34,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a71b64ee/f479f2c071374cfd8a7674ea7e2e513f/FLAG145f81c7f [2022-07-13 10:15:34,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a71b64ee/f479f2c071374cfd8a7674ea7e2e513f [2022-07-13 10:15:34,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:15:34,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:15:34,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:15:34,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:15:34,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:15:34,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55db268f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34, skipping insertion in model container [2022-07-13 10:15:34,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:15:34,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:15:34,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-07-13 10:15:34,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:15:34,711 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:15:34,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-07-13 10:15:34,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:15:34,780 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:15:34,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34 WrapperNode [2022-07-13 10:15:34,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:15:34,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:15:34,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:15:34,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:15:34,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,828 INFO L137 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-07-13 10:15:34,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:15:34,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:15:34,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:15:34,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:15:34,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:15:34,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:15:34,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:15:34,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:15:34,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (1/1) ... [2022-07-13 10:15:34,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:15:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:15:34,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:15:34,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:15:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:15:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 10:15:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 10:15:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 10:15:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:15:34,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:15:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 10:15:35,071 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:15:35,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:15:35,312 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:15:35,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:15:35,317 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:15:35,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:15:35 BoogieIcfgContainer [2022-07-13 10:15:35,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:15:35,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:15:35,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:15:35,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:15:35,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:15:34" (1/3) ... [2022-07-13 10:15:35,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f1669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:15:35, skipping insertion in model container [2022-07-13 10:15:35,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:15:34" (2/3) ... [2022-07-13 10:15:35,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f1669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:15:35, skipping insertion in model container [2022-07-13 10:15:35,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:15:35" (3/3) ... [2022-07-13 10:15:35,336 INFO L111 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-07-13 10:15:35,360 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:15:35,361 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:15:35,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:15:35,434 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49e23aac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d152e43 [2022-07-13 10:15:35,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:15:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 10:15:35,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:35,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:35,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1608152958, now seen corresponding path program 1 times [2022-07-13 10:15:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:15:35,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370677738] [2022-07-13 10:15:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:15:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:15:35,465 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) [2022-07-13 10:15:35,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 10:15:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:35,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 10:15:35,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:35,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:15:35,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:15:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370677738] [2022-07-13 10:15:35,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370677738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:35,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:35,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:15:35,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436167186] [2022-07-13 10:15:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:35,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:15:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:15:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:15:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:15:35,640 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2022-07-13 10:15:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:35,653 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2022-07-13 10:15:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:15:35,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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 [2022-07-13 10:15:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:35,661 INFO L225 Difference]: With dead ends: 37 [2022-07-13 10:15:35,661 INFO L226 Difference]: Without dead ends: 17 [2022-07-13 10:15:35,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:15:35,667 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:35,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:15:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-13 10:15:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-13 10:15:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-13 10:15:35,710 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-07-13 10:15:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:35,711 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-13 10:15:35,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2022-07-13 10:15:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-13 10:15:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 10:15:35,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:35,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:35,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:35,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:15:35,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1873320706, now seen corresponding path program 1 times [2022-07-13 10:15:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:15:35,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962053206] [2022-07-13 10:15:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:35,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:15:35,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:15:35,932 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) [2022-07-13 10:15:35,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 10:15:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 10:15:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:36,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:15:36,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:15:36,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962053206] [2022-07-13 10:15:36,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962053206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:36,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:36,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 10:15:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40593335] [2022-07-13 10:15:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:15:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:15:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:15:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:15:36,043 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2022-07-13 10:15:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:36,140 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-07-13 10:15:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:15:36,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 [2022-07-13 10:15:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:36,142 INFO L225 Difference]: With dead ends: 31 [2022-07-13 10:15:36,142 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 10:15:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:15:36,143 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:36,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:15:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 10:15:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-07-13 10:15:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-13 10:15:36,147 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-07-13 10:15:36,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:36,148 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-13 10:15:36,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2022-07-13 10:15:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-13 10:15:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 10:15:36,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:36,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:36,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:15:36,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash -270521828, now seen corresponding path program 1 times [2022-07-13 10:15:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:15:36,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941432013] [2022-07-13 10:15:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:15:36,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:15:36,352 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) [2022-07-13 10:15:36,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 10:15:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:15:36,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:36,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:15:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:15:36,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:15:36,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941432013] [2022-07-13 10:15:36,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941432013] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:15:36,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:15:36,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-13 10:15:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802508391] [2022-07-13 10:15:36,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:15:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 10:15:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:15:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 10:15:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:15:36,534 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:36,686 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-07-13 10:15:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 10:15:36,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) Word has length 14 [2022-07-13 10:15:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:36,688 INFO L225 Difference]: With dead ends: 33 [2022-07-13 10:15:36,688 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 10:15:36,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-07-13 10:15:36,690 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:36,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 30 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:15:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 10:15:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-07-13 10:15:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2022-07-13 10:15:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-07-13 10:15:36,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2022-07-13 10:15:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:36,694 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-07-13 10:15:36,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-07-13 10:15:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 10:15:36,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:36,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:36,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:15:36,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1874059334, now seen corresponding path program 2 times [2022-07-13 10:15:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:15:36,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892223756] [2022-07-13 10:15:36,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:15:36,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:15:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:15:36,907 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) [2022-07-13 10:15:36,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 10:15:36,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 10:15:36,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:15:36,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 10:15:36,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:37,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:15:37,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:15:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892223756] [2022-07-13 10:15:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892223756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:15:37,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:15:37,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:15:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875037691] [2022-07-13 10:15:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:15:37,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:15:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:15:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:15:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:15:37,043 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:15:37,193 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-07-13 10:15:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:15:37,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 10:15:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:15:37,194 INFO L225 Difference]: With dead ends: 35 [2022-07-13 10:15:37,195 INFO L226 Difference]: Without dead ends: 28 [2022-07-13 10:15:37,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:15:37,196 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:15:37,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 14 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:15:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-13 10:15:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-07-13 10:15:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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) [2022-07-13 10:15:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-07-13 10:15:37,201 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2022-07-13 10:15:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:15:37,202 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-13 10:15:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:15:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-07-13 10:15:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 10:15:37,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:15:37,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:15:37,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:15:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:15:37,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:15:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:15:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash 265660728, now seen corresponding path program 1 times [2022-07-13 10:15:37,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:15:37,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447549794] [2022-07-13 10:15:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:15:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:15:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:15:37,414 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) [2022-07-13 10:15:37,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 10:15:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:15:37,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 10:15:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:15:37,648 INFO L356 Elim1Store]: treesize reduction 113, result has 29.8 percent of original size [2022-07-13 10:15:37,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 88 [2022-07-13 10:15:37,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-13 10:15:37,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2022-07-13 10:15:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:15:37,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:15:37,942 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:15:37,944 INFO L390 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 776 treesize of output 730 [2022-07-13 10:15:37,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 190