./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 a31fd051 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-?-a31fd05 [2023-02-15 10:56:21,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:56:21,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:56:22,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:56:22,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:56:22,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:56:22,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:56:22,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:56:22,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:56:22,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:56:22,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:56:22,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:56:22,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:56:22,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:56:22,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:56:22,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:56:22,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:56:22,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:56:22,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:56:22,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:56:22,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:56:22,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:56:22,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:56:22,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:56:22,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:56:22,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:56:22,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:56:22,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:56:22,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:56:22,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:56:22,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:56:22,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:56:22,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:56:22,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:56:22,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:56:22,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:56:22,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:56:22,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:56:22,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:56:22,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:56:22,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:56:22,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:56:22,064 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:56:22,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:56:22,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:56:22,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:56:22,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:56:22,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:56:22,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:56:22,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:56:22,071 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:56:22,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:56:22,072 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:56:22,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:56:22,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:56:22,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:56:22,074 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:56:22,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:56:22,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:56:22,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:56:22,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:56:22,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:56:22,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:56:22,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:56:22,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:56:22,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:56:22,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:56:22,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:56:22,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:56:22,076 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:56:22,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:56:22,077 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:56:22,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 [2023-02-15 10:56:22,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:56:22,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:56:22,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:56:22,347 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:56:22,347 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:56:22,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2023-02-15 10:56:23,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:56:23,618 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:56:23,618 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2023-02-15 10:56:23,622 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4126328e9/7676d1b47df14348831f5f4cfa9ff5dc/FLAG5c9e113a3 [2023-02-15 10:56:23,637 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4126328e9/7676d1b47df14348831f5f4cfa9ff5dc [2023-02-15 10:56:23,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:56:23,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:56:23,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:56:23,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:56:23,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:56:23,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab4cb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23, skipping insertion in model container [2023-02-15 10:56:23,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:56:23,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:56:23,812 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] [2023-02-15 10:56:23,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:56:23,838 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:56:23,849 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] [2023-02-15 10:56:23,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:56:23,876 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:56:23,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23 WrapperNode [2023-02-15 10:56:23,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:56:23,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:56:23,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:56:23,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:56:23,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,919 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-02-15 10:56:23,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:56:23,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:56:23,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:56:23,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:56:23,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:56:23,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:56:23,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:56:23,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:56:23,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (1/1) ... [2023-02-15 10:56:23,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:56:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:56:23,996 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) [2023-02-15 10:56:24,007 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 [2023-02-15 10:56:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:56:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:56:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:56:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:56:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:56:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:56:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:56:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:56:24,090 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:56:24,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:56:24,212 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:56:24,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:56:24,217 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 10:56:24,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:56:24 BoogieIcfgContainer [2023-02-15 10:56:24,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:56:24,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:56:24,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:56:24,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:56:24,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:56:23" (1/3) ... [2023-02-15 10:56:24,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab5145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:56:24, skipping insertion in model container [2023-02-15 10:56:24,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:56:23" (2/3) ... [2023-02-15 10:56:24,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab5145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:56:24, skipping insertion in model container [2023-02-15 10:56:24,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:56:24" (3/3) ... [2023-02-15 10:56:24,226 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2023-02-15 10:56:24,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:56:24,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:56:24,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:56:24,286 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;@52e2f31a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:56:24,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:56:24,290 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) [2023-02-15 10:56:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 10:56:24,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:56:24,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 10:56:24,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:56:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:56:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2023-02-15 10:56:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:56:24,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350964212] [2023-02-15 10:56:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:24,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:56:24,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:56:24,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865237630] [2023-02-15 10:56:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:24,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:56:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:56:24,385 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) [2023-02-15 10:56:24,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:56:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:56:24,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 10:56:24,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:56:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:56:24,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:56:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:56:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350964212] [2023-02-15 10:56:24,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:56:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865237630] [2023-02-15 10:56:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865237630] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:56:24,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:56:24,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:56:24,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727601833] [2023-02-15 10:56:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:56:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:56:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:56:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:56:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:56:24,592 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) [2023-02-15 10:56:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:56:24,625 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2023-02-15 10:56:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:56:24,627 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 [2023-02-15 10:56:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:56:24,632 INFO L225 Difference]: With dead ends: 33 [2023-02-15 10:56:24,633 INFO L226 Difference]: Without dead ends: 16 [2023-02-15 10:56:24,635 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 [2023-02-15 10:56:24,645 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 [2023-02-15 10:56:24,646 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] [2023-02-15 10:56:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-15 10:56:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2023-02-15 10:56:24,671 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) [2023-02-15 10:56:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-02-15 10:56:24,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-02-15 10:56:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:56:24,673 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-02-15 10:56:24,673 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) [2023-02-15 10:56:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-02-15 10:56:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 10:56:24,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:56:24,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:56:24,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:56:24,881 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 [2023-02-15 10:56:24,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:56:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:56:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2023-02-15 10:56:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:56:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129387245] [2023-02-15 10:56:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:24,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:56:24,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:56:24,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403453666] [2023-02-15 10:56:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:24,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:56:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:56:24,896 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) [2023-02-15 10:56:24,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:56:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:56:24,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 10:56:24,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:56:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:56:25,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:56:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:56:25,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129387245] [2023-02-15 10:56:25,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:56:25,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403453666] [2023-02-15 10:56:25,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403453666] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:56:25,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:56:25,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:56:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602339787] [2023-02-15 10:56:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:56:25,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:56:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:56:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:56:25,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:56:25,013 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) [2023-02-15 10:56:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:56:25,053 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-15 10:56:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:56:25,054 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 [2023-02-15 10:56:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:56:25,054 INFO L225 Difference]: With dead ends: 28 [2023-02-15 10:56:25,055 INFO L226 Difference]: Without dead ends: 19 [2023-02-15 10:56:25,055 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 [2023-02-15 10:56:25,056 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 [2023-02-15 10:56:25,057 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] [2023-02-15 10:56:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-15 10:56:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2023-02-15 10:56:25,060 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) [2023-02-15 10:56:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-15 10:56:25,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2023-02-15 10:56:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:56:25,061 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-15 10:56:25,061 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) [2023-02-15 10:56:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-15 10:56:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:56:25,062 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:56:25,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:56:25,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:56:25,267 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 [2023-02-15 10:56:25,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:56:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:56:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2023-02-15 10:56:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:56:25,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352711619] [2023-02-15 10:56:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:25,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:56:25,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:56:25,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094636721] [2023-02-15 10:56:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:56:25,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:56:25,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:56:25,287 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) [2023-02-15 10:56:25,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:56:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:56:25,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 10:56:25,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:56:25,445 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 [2023-02-15 10:56:25,452 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:56:25,457 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:56:25,464 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:56:25,468 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 [2023-02-15 10:56:25,512 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 [2023-02-15 10:56:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:56:25,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:56:25,680 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 [2023-02-15 10:56:25,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:56:25,721 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 [2023-02-15 10:56:27,881 INFO L321 Elim1Store]: treesize reduction 884, result has 27.6 percent of original size [2023-02-15 10:56:27,881 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 [2023-02-15 10:56:28,645 INFO L217 Elim1Store]: Index analysis took 648 ms [2023-02-15 10:56:42,993 WARN L233 SmtUtils]: Spent 14.18s 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) [2023-02-15 10:56:42,995 INFO L321 Elim1Store]: treesize reduction 2686, result has 16.0 percent of original size [2023-02-15 10:56:42,996 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 1755 treesize of output 9318 [2023-02-15 10:59:25,223 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,224 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:59:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:59:25,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:59:25,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:25,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:59:28,033 INFO L321 Elim1Store]: treesize reduction 1238, result has 25.5 percent of original size [2023-02-15 10:59:28,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 29 case distinctions, treesize of input 1877 treesize of output 13100 [2023-02-15 10:59:28,528 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:28,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:28,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:59:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver