./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/matrix-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 11:23:31,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:23:31,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:23:31,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:23:31,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:23:31,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:23:31,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:23:31,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:23:31,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:23:31,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:23:31,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:23:31,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:23:31,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:23:31,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:23:31,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:23:31,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:23:31,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:23:31,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:23:31,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:23:32,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:23:32,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:23:32,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:23:32,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:23:32,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:23:32,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:23:32,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:23:32,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:23:32,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:23:32,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:23:32,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:23:32,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:23:32,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:23:32,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:23:32,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:23:32,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:23:32,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:23:32,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:23:32,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:23:32,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:23:32,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:23:32,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:23:32,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:23:32,055 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:23:32,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:23:32,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:23:32,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:23:32,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:23:32,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:23:32,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:23:32,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:23:32,058 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:23:32,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:23:32,059 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:23:32,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:23:32,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:23:32,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:23:32,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:23:32,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:23:32,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:23:32,061 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:23:32,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:23:32,061 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:23:32,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:23:32,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:23:32,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:23:32,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:23:32,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:23:32,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:23:32,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:23:32,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:23:32,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:23:32,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:23:32,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:23:32,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:23:32,064 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:23:32,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:23:32,064 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:23:32,064 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 [2023-02-14 11:23:32,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:23:32,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:23:32,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:23:32,322 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:23:32,322 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:23:32,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2023-02-14 11:23:33,469 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:23:33,621 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:23:33,622 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2023-02-14 11:23:33,627 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52eb29343/19261b4e1fdc4061939b7e16d8763e8e/FLAG79c88d121 [2023-02-14 11:23:33,643 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52eb29343/19261b4e1fdc4061939b7e16d8763e8e [2023-02-14 11:23:33,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:23:33,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:23:33,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:23:33,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:23:33,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:23:33,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69441350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33, skipping insertion in model container [2023-02-14 11:23:33,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:23:33,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:23:33,798 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2023-02-14 11:23:33,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:23:33,823 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:23:33,831 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2023-02-14 11:23:33,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:23:33,847 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:23:33,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33 WrapperNode [2023-02-14 11:23:33,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:23:33,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:23:33,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:23:33,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:23:33,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,873 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-02-14 11:23:33,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:23:33,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:23:33,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:23:33,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:23:33,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:23:33,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:23:33,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:23:33,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:23:33,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (1/1) ... [2023-02-14 11:23:33,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:23:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:23:33,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 11:23:33,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 11:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 11:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 11:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:23:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:23:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 11:23:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 11:23:34,000 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:23:34,002 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:23:34,119 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:23:34,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:23:34,125 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 11:23:34,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:23:34 BoogieIcfgContainer [2023-02-14 11:23:34,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:23:34,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:23:34,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:23:34,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:23:34,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:23:33" (1/3) ... [2023-02-14 11:23:34,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f76035e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:23:34, skipping insertion in model container [2023-02-14 11:23:34,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:23:33" (2/3) ... [2023-02-14 11:23:34,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f76035e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:23:34, skipping insertion in model container [2023-02-14 11:23:34,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:23:34" (3/3) ... [2023-02-14 11:23:34,134 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2023-02-14 11:23:34,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:23:34,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 11:23:34,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:23:34,190 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6711ca3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:23:34,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 11:23:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 11:23:34,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:23:34,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 11:23:34,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:23:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:23:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2023-02-14 11:23:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:23:34,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853856346] [2023-02-14 11:23:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:23:34,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:23:34,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852289649] [2023-02-14 11:23:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:34,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:23:34,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:23:34,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:23:34,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 11:23:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:23:34,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 11:23:34,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:23:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:23:34,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:23:34,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:23:34,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853856346] [2023-02-14 11:23:34,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:23:34,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852289649] [2023-02-14 11:23:34,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852289649] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:23:34,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:23:34,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 11:23:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426829708] [2023-02-14 11:23:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:23:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 11:23:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:23:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 11:23:34,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 11:23:34,457 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:23:34,488 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2023-02-14 11:23:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 11:23:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 11:23:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:23:34,496 INFO L225 Difference]: With dead ends: 33 [2023-02-14 11:23:34,496 INFO L226 Difference]: Without dead ends: 16 [2023-02-14 11:23:34,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 11:23:34,501 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:23:34,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:23:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-14 11:23:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2023-02-14 11:23:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-02-14 11:23:34,527 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-02-14 11:23:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:23:34,527 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-02-14 11:23:34,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-02-14 11:23:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 11:23:34,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:23:34,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:23:34,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 11:23:34,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-14 11:23:34,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:23:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:23:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2023-02-14 11:23:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:23:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509967259] [2023-02-14 11:23:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:23:34,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:23:34,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337292509] [2023-02-14 11:23:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:34,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:23:34,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:23:34,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:23:34,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 11:23:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:23:34,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 11:23:34,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:23:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:23:34,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:23:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:23:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509967259] [2023-02-14 11:23:34,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:23:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337292509] [2023-02-14 11:23:34,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337292509] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:23:34,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:23:34,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 11:23:34,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164593976] [2023-02-14 11:23:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:23:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:23:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:23:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:23:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:23:34,896 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:23:34,940 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-14 11:23:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:23:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 11:23:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:23:34,942 INFO L225 Difference]: With dead ends: 28 [2023-02-14 11:23:34,942 INFO L226 Difference]: Without dead ends: 19 [2023-02-14 11:23:34,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:23:34,943 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:23:34,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:23:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-14 11:23:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2023-02-14 11:23:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-14 11:23:34,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2023-02-14 11:23:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:23:34,948 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-14 11:23:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:23:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-14 11:23:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 11:23:34,949 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:23:34,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:23:34,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 11:23:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-14 11:23:35,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:23:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:23:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2023-02-14 11:23:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:23:35,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16407302] [2023-02-14 11:23:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:23:35,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:23:35,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797820741] [2023-02-14 11:23:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:23:35,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:23:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:23:35,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:23:35,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 11:23:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:23:35,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 11:23:35,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:23:35,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 130 [2023-02-14 11:23:35,377 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-14 11:23:35,382 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-14 11:23:35,389 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-14 11:23:35,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-14 11:23:35,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:23:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:23:35,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:23:35,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 128 [2023-02-14 11:23:35,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:23:35,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 573 [2023-02-14 11:23:37,886 INFO L321 Elim1Store]: treesize reduction 884, result has 27.6 percent of original size [2023-02-14 11:23:37,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 1625 treesize of output 2336 [2023-02-14 11:23:38,567 INFO L217 Elim1Store]: Index analysis took 540 ms [2023-02-14 11:23:52,238 WARN L233 SmtUtils]: Spent 13.51s on a formula simplification. DAG size of input: 329 DAG size of output: 121 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-14 11:23:52,240 INFO L321 Elim1Store]: treesize reduction 2686, result has 16.0 percent of original size [2023-02-14 11:23:52,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 54 case distinctions, treesize of input 1694 treesize of output 9257 [2023-02-14 11:24:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:27,657 INFO L217 Elim1Store]: Index analysis took 2024 ms [2023-02-14 11:24:30,642 INFO L321 Elim1Store]: treesize reduction 712, result has 1.4 percent of original size [2023-02-14 11:24:30,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 28 case distinctions, treesize of input 1610 treesize of output 8948 [2023-02-14 11:24:32,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:32,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:33,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:33,384 INFO L217 Elim1Store]: Index analysis took 1150 ms [2023-02-14 11:24:34,985 INFO L321 Elim1Store]: treesize reduction 669, result has 1.5 percent of original size [2023-02-14 11:24:34,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 26 case distinctions, treesize of input 4639 treesize of output 9701 [2023-02-14 11:24:45,513 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:24:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:24:45,693 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:24:46,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:51,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:53,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:24:53,162 INFO L217 Elim1Store]: Index analysis took 7790 ms [2023-02-14 11:24:58,991 INFO L321 Elim1Store]: treesize reduction 1218, result has 0.5 percent of original size [2023-02-14 11:24:58,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 17 case distinctions, treesize of input 1464 treesize of output 6929 [2023-02-14 11:25:00,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:00,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:00,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:04,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:04,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:05,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:05,413 INFO L217 Elim1Store]: Index analysis took 4726 ms [2023-02-14 11:25:05,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:07,133 INFO L321 Elim1Store]: treesize reduction 1313, result has 2.0 percent of original size [2023-02-14 11:25:07,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 16 case distinctions, treesize of input 1464 treesize of output 6950 [2023-02-14 11:25:09,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:09,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:10,741 INFO L217 Elim1Store]: Index analysis took 1935 ms [2023-02-14 11:25:13,314 INFO L321 Elim1Store]: treesize reduction 1835, result has 0.3 percent of original size [2023-02-14 11:25:13,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 21 case distinctions, treesize of input 1464 treesize of output 6929 [2023-02-14 11:25:15,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,237 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,242 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:15,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:15,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:15,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:15,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:16,172 INFO L217 Elim1Store]: Index analysis took 942 ms [2023-02-14 11:25:16,193 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:16,320 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:16,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:16,556 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:16,635 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:16,728 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-14 11:25:16,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1464 treesize of output 6923 [2023-02-14 11:25:17,770 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:17,771 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:17,772 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:17,772 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:17,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:25:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:17,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:17,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:25:18,231 INFO L217 Elim1Store]: Index analysis took 461 ms [2023-02-14 11:25:18,885 INFO L321 Elim1Store]: treesize reduction 310, result has 1.9 percent of original size [2023-02-14 11:25:18,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1464 treesize of output 6929