./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/forester-heap/sll-circular-1.i -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 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:38:51,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:38:51,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:38:52,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:38:52,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:38:52,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:38:52,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:38:52,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:38:52,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:38:52,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:38:52,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:38:52,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:38:52,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:38:52,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:38:52,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:38:52,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:38:52,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:38:52,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:38:52,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:38:52,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:38:52,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:38:52,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:38:52,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:38:52,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:38:52,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:38:52,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:38:52,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:38:52,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:38:52,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:38:52,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:38:52,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:38:52,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:38:52,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:38:52,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:38:52,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:38:52,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:38:52,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:38:52,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:38:52,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:38:52,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:38:52,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:38:52,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:38:52,085 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:38:52,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:38:52,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:38:52,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:38:52,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:38:52,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:38:52,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:38:52,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:38:52,088 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:38:52,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:38:52,088 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:38:52,089 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:38:52,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:38:52,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:38:52,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:38:52,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:38:52,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:38:52,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:38:52,092 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:38:52,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 [2023-02-17 00:38:52,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:38:52,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:38:52,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:38:52,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:38:52,307 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:38:52,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-circular-1.i [2023-02-17 00:38:53,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:38:53,548 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:38:53,548 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-circular-1.i [2023-02-17 00:38:53,561 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f2d2d01/b184abb482a64f6fbbe59309792ae27c/FLAGdc1899b03 [2023-02-17 00:38:53,572 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f2d2d01/b184abb482a64f6fbbe59309792ae27c [2023-02-17 00:38:53,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:38:53,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:38:53,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:38:53,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:38:53,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:38:53,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79573924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53, skipping insertion in model container [2023-02-17 00:38:53,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:38:53,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:38:53,785 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/forester-heap/sll-circular-1.i[22324,22337] [2023-02-17 00:38:53,790 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/forester-heap/sll-circular-1.i[22430,22443] [2023-02-17 00:38:53,791 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/forester-heap/sll-circular-1.i[22555,22568] [2023-02-17 00:38:53,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:38:53,802 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:38:53,836 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/forester-heap/sll-circular-1.i[22324,22337] [2023-02-17 00:38:53,843 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/forester-heap/sll-circular-1.i[22430,22443] [2023-02-17 00:38:53,847 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/forester-heap/sll-circular-1.i[22555,22568] [2023-02-17 00:38:53,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:38:53,874 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:38:53,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53 WrapperNode [2023-02-17 00:38:53,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:38:53,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:38:53,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:38:53,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:38:53,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,908 INFO L138 Inliner]: procedures = 119, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 113 [2023-02-17 00:38:53,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:38:53,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:38:53,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:38:53,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:38:53,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:38:53,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:38:53,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:38:53,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:38:53,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (1/1) ... [2023-02-17 00:38:53,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:38:53,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:38:53,988 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) [2023-02-17 00:38:54,005 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 [2023-02-17 00:38:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 00:38:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 00:38:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:38:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:38:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 00:38:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 00:38:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:38:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:38:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:38:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:38:54,150 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:38:54,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:38:54,333 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:38:54,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:38:54,338 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2023-02-17 00:38:54,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:38:54 BoogieIcfgContainer [2023-02-17 00:38:54,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:38:54,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:38:54,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:38:54,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:38:54,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:38:53" (1/3) ... [2023-02-17 00:38:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257397f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:38:54, skipping insertion in model container [2023-02-17 00:38:54,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:38:53" (2/3) ... [2023-02-17 00:38:54,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257397f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:38:54, skipping insertion in model container [2023-02-17 00:38:54,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:38:54" (3/3) ... [2023-02-17 00:38:54,345 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2023-02-17 00:38:54,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:38:54,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-17 00:38:54,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:38:54,389 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;@569ebfba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:38:54,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-17 00:38:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 32 states have internal predecessors, (51), 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) [2023-02-17 00:38:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:38:54,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:54,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:38:54,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash 890892102, now seen corresponding path program 1 times [2023-02-17 00:38:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:54,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806497897] [2023-02-17 00:38:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:54,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:54,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806497897] [2023-02-17 00:38:54,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806497897] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:54,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:54,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:38:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319591474] [2023-02-17 00:38:54,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:38:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:38:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:38:54,609 INFO L87 Difference]: Start difference. First operand has 33 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2023-02-17 00:38:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:54,623 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2023-02-17 00:38:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:38:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2023-02-17 00:38:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:54,630 INFO L225 Difference]: With dead ends: 64 [2023-02-17 00:38:54,630 INFO L226 Difference]: Without dead ends: 26 [2023-02-17 00:38:54,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:38:54,635 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:54,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-17 00:38:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-17 00:38:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:38:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-17 00:38:54,657 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 6 [2023-02-17 00:38:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:54,658 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-17 00:38:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2023-02-17 00:38:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-17 00:38:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 00:38:54,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:54,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:54,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:38:54,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1806883023, now seen corresponding path program 1 times [2023-02-17 00:38:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:54,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694537537] [2023-02-17 00:38:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:54,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:54,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694537537] [2023-02-17 00:38:54,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694537537] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:54,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:54,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:38:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103035696] [2023-02-17 00:38:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:54,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:38:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:38:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:38:54,840 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-17 00:38:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:54,899 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-02-17 00:38:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 00:38:54,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-02-17 00:38:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:54,902 INFO L225 Difference]: With dead ends: 42 [2023-02-17 00:38:54,902 INFO L226 Difference]: Without dead ends: 38 [2023-02-17 00:38:54,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:38:54,904 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:54,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-17 00:38:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2023-02-17 00:38:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 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) [2023-02-17 00:38:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-17 00:38:54,918 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2023-02-17 00:38:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:54,919 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-17 00:38:54,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-17 00:38:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-17 00:38:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 00:38:54,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:54,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:54,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:38:54,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash 706691337, now seen corresponding path program 1 times [2023-02-17 00:38:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:54,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981050145] [2023-02-17 00:38:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:54,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981050145] [2023-02-17 00:38:54,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981050145] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:54,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:54,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:38:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875500637] [2023-02-17 00:38:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:38:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:38:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:54,989 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-02-17 00:38:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:55,015 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2023-02-17 00:38:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:38:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-02-17 00:38:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:55,018 INFO L225 Difference]: With dead ends: 71 [2023-02-17 00:38:55,018 INFO L226 Difference]: Without dead ends: 49 [2023-02-17 00:38:55,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:55,022 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 48 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 [2023-02-17 00:38:55,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 48 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-02-17 00:38:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2023-02-17 00:38:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 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) [2023-02-17 00:38:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-02-17 00:38:55,037 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 10 [2023-02-17 00:38:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:55,038 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-02-17 00:38:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-02-17 00:38:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-02-17 00:38:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 00:38:55,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:55,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:38:55,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -84804677, now seen corresponding path program 1 times [2023-02-17 00:38:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:55,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458429995] [2023-02-17 00:38:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:55,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458429995] [2023-02-17 00:38:55,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458429995] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:55,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:55,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:38:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365194973] [2023-02-17 00:38:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:55,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:38:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:38:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:55,092 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-02-17 00:38:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:55,109 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-02-17 00:38:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:38:55,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-02-17 00:38:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:55,110 INFO L225 Difference]: With dead ends: 38 [2023-02-17 00:38:55,111 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 00:38:55,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:55,113 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:55,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 00:38:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-17 00:38:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 35 states have internal predecessors, (44), 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) [2023-02-17 00:38:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-02-17 00:38:55,120 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 13 [2023-02-17 00:38:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:55,121 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-02-17 00:38:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-02-17 00:38:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-02-17 00:38:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 00:38:55,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:55,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:55,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 00:38:55,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash -84802755, now seen corresponding path program 1 times [2023-02-17 00:38:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627170108] [2023-02-17 00:38:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:55,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:55,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627170108] [2023-02-17 00:38:55,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627170108] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:55,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:55,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 00:38:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143647426] [2023-02-17 00:38:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:55,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:38:55,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:38:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:38:55,464 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-17 00:38:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:55,532 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2023-02-17 00:38:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:38:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-02-17 00:38:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:55,533 INFO L225 Difference]: With dead ends: 47 [2023-02-17 00:38:55,533 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 00:38:55,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:38:55,534 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:55,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 73 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 00:38:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-02-17 00:38:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 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) [2023-02-17 00:38:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-02-17 00:38:55,538 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 13 [2023-02-17 00:38:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:55,538 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-02-17 00:38:55,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-17 00:38:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-02-17 00:38:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 00:38:55,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:55,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:55,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 00:38:55,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1783178116, now seen corresponding path program 1 times [2023-02-17 00:38:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:55,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240526506] [2023-02-17 00:38:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240526506] [2023-02-17 00:38:55,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240526506] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:38:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257177412] [2023-02-17 00:38:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:38:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:38:55,638 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) [2023-02-17 00:38:55,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:38:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:55,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 00:38:55,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:38:55,759 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 6 treesize of output 5 [2023-02-17 00:38:55,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-17 00:38:55,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:55,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-17 00:38:55,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-17 00:38:55,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:55,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 00:38:55,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-02-17 00:38:55,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:38:55,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-02-17 00:38:55,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-02-17 00:38:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:55,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:38:55,836 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2023-02-17 00:38:55,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:55,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-02-17 00:38:55,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:55,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2023-02-17 00:38:55,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-02-17 00:38:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-17 00:38:55,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257177412] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:38:55,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:38:55,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-17 00:38:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898867964] [2023-02-17 00:38:55,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:38:55,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:38:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:55,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:38:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2023-02-17 00:38:55,876 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-02-17 00:38:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:55,935 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-02-17 00:38:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:38:55,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 13 [2023-02-17 00:38:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:55,938 INFO L225 Difference]: With dead ends: 61 [2023-02-17 00:38:55,938 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 00:38:55,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=48, Unknown=1, NotChecked=14, Total=90 [2023-02-17 00:38:55,941 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:55,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 58 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2023-02-17 00:38:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 00:38:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2023-02-17 00:38:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 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) [2023-02-17 00:38:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-02-17 00:38:55,952 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 13 [2023-02-17 00:38:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:55,952 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-02-17 00:38:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-02-17 00:38:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-02-17 00:38:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:38:55,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:55,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:55,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 00:38:56,160 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,SelfDestructingSolverStorable5 [2023-02-17 00:38:56,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1644077251, now seen corresponding path program 1 times [2023-02-17 00:38:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:56,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878582979] [2023-02-17 00:38:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:56,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878582979] [2023-02-17 00:38:56,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878582979] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:38:56,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:38:56,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:38:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34873053] [2023-02-17 00:38:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:38:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:38:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:38:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:38:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:56,203 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-17 00:38:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:38:56,222 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-17 00:38:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:38:56,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-02-17 00:38:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:38:56,223 INFO L225 Difference]: With dead ends: 96 [2023-02-17 00:38:56,223 INFO L226 Difference]: Without dead ends: 73 [2023-02-17 00:38:56,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:38:56,224 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:38:56,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 70 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:38:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-17 00:38:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2023-02-17 00:38:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 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) [2023-02-17 00:38:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-02-17 00:38:56,242 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 17 [2023-02-17 00:38:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:38:56,242 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-02-17 00:38:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-17 00:38:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-02-17 00:38:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:38:56,244 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:38:56,244 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:38:56,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 00:38:56,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:38:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:38:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash 619754034, now seen corresponding path program 1 times [2023-02-17 00:38:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:38:56,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653313917] [2023-02-17 00:38:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:38:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:38:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653313917] [2023-02-17 00:38:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653313917] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:38:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635169513] [2023-02-17 00:38:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:38:56,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:38:56,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:38:56,775 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) [2023-02-17 00:38:56,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:38:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:38:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-17 00:38:56,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:38:56,858 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 6 treesize of output 5 [2023-02-17 00:38:56,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 00:38:56,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:56,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2023-02-17 00:38:56,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:38:56,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-02-17 00:38:56,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:56,878 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 1 case distinctions, treesize of input 32 treesize of output 48 [2023-02-17 00:38:56,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-17 00:38:56,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:56,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 00:38:56,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-17 00:38:56,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2023-02-17 00:38:56,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:38:56,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-02-17 00:38:56,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:38:56,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-17 00:38:56,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:56,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 100 [2023-02-17 00:38:56,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2023-02-17 00:38:56,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2023-02-17 00:38:57,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:57,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 228 [2023-02-17 00:38:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:38:57,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:38:59,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:59,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 555402 treesize of output 539695 [2023-02-17 00:38:59,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:59,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 79 case distinctions, treesize of input 27314815 treesize of output 26460695 [2023-02-17 00:38:59,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:38:59,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 26459698 treesize of output 23985324 [2023-02-17 00:39:00,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:00,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10967897 treesize of output 10967711 [2023-02-17 00:39:01,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-17 00:39:01,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:01,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 841 treesize of output 857 [2023-02-17 00:39:17,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:17,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 149 [2023-02-17 00:39:31,816 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:31,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 149 [2023-02-17 00:39:33,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:33,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 149 [2023-02-17 00:39:37,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:39:37,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 185 [2023-02-17 00:40:15,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:40:15,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 841 treesize of output 857 [2023-02-17 00:40:35,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:40:35,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 841 treesize of output 857 [2023-02-17 00:41:06,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:41:06,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 841 treesize of output 857 [2023-02-17 00:42:04,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:42:04,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1681 treesize of output 1665