./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d98532a5d518c1ba99a39e0965faf5a69d8ad5bf82f7713684141895d3e8815 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 04:48:48,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:48:48,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:48:48,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:48:48,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:48:48,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:48:48,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:48:48,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:48:48,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:48:48,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:48:48,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:48:48,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:48:48,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:48:48,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:48:48,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:48:48,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:48:48,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:48:48,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:48:48,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:48:48,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:48:48,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:48:48,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:48:48,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:48:48,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:48:48,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:48:48,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:48:48,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:48:48,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:48:48,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:48:48,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:48:48,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:48:48,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:48:48,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:48:48,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:48:48,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:48:48,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:48:48,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:48:48,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:48:48,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:48:48,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:48:48,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:48:48,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 04:48:48,939 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:48:48,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:48:48,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:48:48,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:48:48,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 04:48:48,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 04:48:48,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:48:48,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:48:48,942 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:48:48,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:48:48,942 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 04:48:48,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:48:48,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 04:48:48,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:48:48,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 04:48:48,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 04:48:48,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 04:48:48,944 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 04:48:48,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:48:48,944 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:48:48,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 04:48:48,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:48:48,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:48:48,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 04:48:48,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:48:48,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:48:48,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 04:48:48,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 04:48:48,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:48:48,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 04:48:48,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 04:48:48,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 04:48:48,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 04:48:48,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 04:48:48,947 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 04:48:48,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d98532a5d518c1ba99a39e0965faf5a69d8ad5bf82f7713684141895d3e8815 [2023-02-17 04:48:49,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:48:49,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:48:49,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:48:49,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:48:49,256 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:48:49,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_2.c [2023-02-17 04:48:50,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:48:50,552 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:48:50,553 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_2.c [2023-02-17 04:48:50,557 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e484a166/440410bb6a0d4025945a7cad89b01f43/FLAGc0de4539c [2023-02-17 04:48:50,578 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e484a166/440410bb6a0d4025945a7cad89b01f43 [2023-02-17 04:48:50,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:48:50,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:48:50,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:48:50,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:48:50,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:48:50,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0731d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50, skipping insertion in model container [2023-02-17 04:48:50,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:48:50,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:48:50,739 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/array-programs/partial_mod_count_2.c[323,336] [2023-02-17 04:48:50,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:48:50,763 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:48:50,776 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/array-programs/partial_mod_count_2.c[323,336] [2023-02-17 04:48:50,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:48:50,794 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:48:50,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50 WrapperNode [2023-02-17 04:48:50,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:48:50,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:48:50,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:48:50,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:48:50,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,824 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-02-17 04:48:50,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:48:50,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:48:50,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:48:50,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:48:50,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,851 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:48:50,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:48:50,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:48:50,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:48:50,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (1/1) ... [2023-02-17 04:48:50,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:48:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:50,891 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 04:48:50,897 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 04:48:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 04:48:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 04:48:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 04:48:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 04:48:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:48:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:48:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 04:48:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 04:48:50,972 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:48:50,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:48:51,119 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:48:51,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:48:51,125 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 04:48:51,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:48:51 BoogieIcfgContainer [2023-02-17 04:48:51,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:48:51,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 04:48:51,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 04:48:51,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 04:48:51,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 04:48:50" (1/3) ... [2023-02-17 04:48:51,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f49c831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:48:51, skipping insertion in model container [2023-02-17 04:48:51,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:48:50" (2/3) ... [2023-02-17 04:48:51,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f49c831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:48:51, skipping insertion in model container [2023-02-17 04:48:51,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:48:51" (3/3) ... [2023-02-17 04:48:51,153 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_2.c [2023-02-17 04:48:51,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 04:48:51,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 04:48:51,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 04:48:51,284 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;@1996440d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 04:48:51,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 04:48:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 04:48:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 04:48:51,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:51,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:51,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2023-02-17 04:48:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118940635] [2023-02-17 04:48:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:51,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:51,514 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 04:48:51,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118940635] [2023-02-17 04:48:51,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118940635] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:48:51,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:48:51,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:48:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080013965] [2023-02-17 04:48:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:48:51,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 04:48:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 04:48:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 04:48:51,564 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:51,584 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-02-17 04:48:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 04:48:51,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 04:48:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:51,602 INFO L225 Difference]: With dead ends: 31 [2023-02-17 04:48:51,604 INFO L226 Difference]: Without dead ends: 14 [2023-02-17 04:48:51,608 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 04:48:51,616 INFO L413 NwaCegarLoop]: 21 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, 21 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 04:48:51,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:48:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-17 04:48:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-17 04:48:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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 04:48:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-02-17 04:48:51,648 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2023-02-17 04:48:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:51,649 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-02-17 04:48:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-02-17 04:48:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 04:48:51,650 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:51,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:51,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 04:48:51,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2023-02-17 04:48:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:51,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135882888] [2023-02-17 04:48:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:51,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:51,772 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 04:48:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:51,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135882888] [2023-02-17 04:48:51,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135882888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:48:51,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:48:51,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 04:48:51,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094692055] [2023-02-17 04:48:51,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:48:51,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 04:48:51,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:48:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:48:51,776 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:51,838 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-02-17 04:48:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:48:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 04:48:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:51,840 INFO L225 Difference]: With dead ends: 37 [2023-02-17 04:48:51,840 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 04:48:51,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:48:51,841 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:51,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:48:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 04:48:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2023-02-17 04:48:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-17 04:48:51,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-02-17 04:48:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:51,847 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-17 04:48:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-02-17 04:48:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 04:48:51,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:51,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:51,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 04:48:51,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2023-02-17 04:48:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:51,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375268104] [2023-02-17 04:48:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:48:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375268104] [2023-02-17 04:48:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375268104] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:48:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213538340] [2023-02-17 04:48:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:51,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:52,003 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 04:48:52,005 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 04:48:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:52,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:48:52,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:48:52,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:48:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:48:52,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213538340] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:48:52,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:48:52,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-02-17 04:48:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982183459] [2023-02-17 04:48:52,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:48:52,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 04:48:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 04:48:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-17 04:48:52,248 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:52,343 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-02-17 04:48:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 04:48:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-17 04:48:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:52,345 INFO L225 Difference]: With dead ends: 61 [2023-02-17 04:48:52,345 INFO L226 Difference]: Without dead ends: 49 [2023-02-17 04:48:52,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-17 04:48:52,347 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:52,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 32 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:48:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-02-17 04:48:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2023-02-17 04:48:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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 04:48:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-17 04:48:52,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2023-02-17 04:48:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:52,354 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-17 04:48:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:48:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-17 04:48:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 04:48:52,355 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:52,355 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:52,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:52,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2023-02-17 04:48:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:52,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86092971] [2023-02-17 04:48:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:52,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:52,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561602715] [2023-02-17 04:48:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:52,601 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 04:48:52,621 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 04:48:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:52,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 04:48:52,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:48:52,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:48:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:48:52,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86092971] [2023-02-17 04:48:52,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:48:52,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561602715] [2023-02-17 04:48:52,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561602715] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:48:52,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:48:52,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-17 04:48:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918862231] [2023-02-17 04:48:52,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:48:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 04:48:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 04:48:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-02-17 04:48:52,856 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 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 04:48:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:53,085 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2023-02-17 04:48:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 04:48:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 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 21 [2023-02-17 04:48:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:53,090 INFO L225 Difference]: With dead ends: 131 [2023-02-17 04:48:53,090 INFO L226 Difference]: Without dead ends: 117 [2023-02-17 04:48:53,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-02-17 04:48:53,096 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 313 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:53,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 62 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:48:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-17 04:48:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 42. [2023-02-17 04:48:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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 04:48:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-02-17 04:48:53,115 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2023-02-17 04:48:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:53,116 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-02-17 04:48:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 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 04:48:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-02-17 04:48:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 04:48:53,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:53,118 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:53,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 04:48:53,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 194524081, now seen corresponding path program 2 times [2023-02-17 04:48:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:53,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993215303] [2023-02-17 04:48:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:53,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854048692] [2023-02-17 04:48:53,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:48:53,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:53,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:53,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:48:53,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 04:48:53,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-17 04:48:53,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:48:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 04:48:53,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 04:48:53,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 04:48:53,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:53,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993215303] [2023-02-17 04:48:53,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:48:53,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854048692] [2023-02-17 04:48:53,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854048692] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:48:53,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:48:53,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 04:48:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309564744] [2023-02-17 04:48:53,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:48:53,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 04:48:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 04:48:53,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 04:48:53,514 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) 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 04:48:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:53,554 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-02-17 04:48:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 04:48:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) 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 39 [2023-02-17 04:48:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:53,555 INFO L225 Difference]: With dead ends: 61 [2023-02-17 04:48:53,555 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 04:48:53,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-17 04:48:53,556 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:53,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 28 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:48:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 04:48:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2023-02-17 04:48:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 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 04:48:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-02-17 04:48:53,563 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 39 [2023-02-17 04:48:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:53,564 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-02-17 04:48:53,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) 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 04:48:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-02-17 04:48:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 04:48:53,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:53,565 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:53,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:53,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:53,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash -838184220, now seen corresponding path program 1 times [2023-02-17 04:48:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:53,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665269331] [2023-02-17 04:48:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:53,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:53,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692638040] [2023-02-17 04:48:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:53,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:53,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:48:53,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 04:48:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:48:53,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 04:48:53,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:48:53,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:48:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:48:54,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665269331] [2023-02-17 04:48:54,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:48:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692638040] [2023-02-17 04:48:54,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692638040] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:48:54,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:48:54,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-17 04:48:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936605140] [2023-02-17 04:48:54,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:48:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-17 04:48:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-17 04:48:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-02-17 04:48:54,145 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 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 04:48:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:54,739 INFO L93 Difference]: Finished difference Result 547 states and 646 transitions. [2023-02-17 04:48:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-17 04:48:54,740 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 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 45 [2023-02-17 04:48:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:54,744 INFO L225 Difference]: With dead ends: 547 [2023-02-17 04:48:54,744 INFO L226 Difference]: Without dead ends: 512 [2023-02-17 04:48:54,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 04:48:54,747 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 953 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 134 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:48:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-02-17 04:48:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 90. [2023-02-17 04:48:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 89 states have internal predecessors, (105), 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 04:48:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2023-02-17 04:48:54,770 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2023-02-17 04:48:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:54,770 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2023-02-17 04:48:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 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 04:48:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2023-02-17 04:48:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-17 04:48:54,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:54,772 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:54,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:54,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1895724964, now seen corresponding path program 2 times [2023-02-17 04:48:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:54,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991205720] [2023-02-17 04:48:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:55,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:55,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685494460] [2023-02-17 04:48:55,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:48:55,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:55,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:48:55,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 04:48:55,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:48:55,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:48:55,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 04:48:55,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:48:55,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:48:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:48:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991205720] [2023-02-17 04:48:56,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:48:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685494460] [2023-02-17 04:48:56,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685494460] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:48:56,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:48:56,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-02-17 04:48:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934634682] [2023-02-17 04:48:56,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:48:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-17 04:48:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-17 04:48:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-02-17 04:48:56,024 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 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 04:48:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:57,495 INFO L93 Difference]: Finished difference Result 1135 states and 1342 transitions. [2023-02-17 04:48:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-17 04:48:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 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 81 [2023-02-17 04:48:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:57,500 INFO L225 Difference]: With dead ends: 1135 [2023-02-17 04:48:57,500 INFO L226 Difference]: Without dead ends: 1082 [2023-02-17 04:48:57,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-02-17 04:48:57,503 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1558 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:57,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 278 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 04:48:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-02-17 04:48:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 162. [2023-02-17 04:48:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.173913043478261) internal successors, (189), 161 states have internal predecessors, (189), 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 04:48:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2023-02-17 04:48:57,520 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 81 [2023-02-17 04:48:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:57,520 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2023-02-17 04:48:57,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 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 04:48:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2023-02-17 04:48:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-02-17 04:48:57,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:57,522 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:57,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:57,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash 694735140, now seen corresponding path program 3 times [2023-02-17 04:48:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323867351] [2023-02-17 04:48:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:57,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:57,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:57,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182885677] [2023-02-17 04:48:57,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 04:48:57,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:57,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:57,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:48:57,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 04:48:57,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-17 04:48:57,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:48:57,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 04:48:57,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:48:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-02-17 04:48:57,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:48:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-02-17 04:48:58,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:48:58,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323867351] [2023-02-17 04:48:58,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:48:58,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182885677] [2023-02-17 04:48:58,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182885677] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:48:58,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:48:58,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-17 04:48:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181854337] [2023-02-17 04:48:58,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:48:58,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 04:48:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:48:58,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 04:48:58,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-02-17 04:48:58,217 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 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 04:48:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:48:58,322 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2023-02-17 04:48:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 04:48:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 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 153 [2023-02-17 04:48:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:48:58,327 INFO L225 Difference]: With dead ends: 193 [2023-02-17 04:48:58,327 INFO L226 Difference]: Without dead ends: 191 [2023-02-17 04:48:58,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=240, Unknown=0, NotChecked=0, Total=380 [2023-02-17 04:48:58,329 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:48:58,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 47 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:48:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-02-17 04:48:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2023-02-17 04:48:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.172972972972973) internal successors, (217), 185 states have internal predecessors, (217), 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 04:48:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 217 transitions. [2023-02-17 04:48:58,345 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 217 transitions. Word has length 153 [2023-02-17 04:48:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:48:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 217 transitions. [2023-02-17 04:48:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 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 04:48:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 217 transitions. [2023-02-17 04:48:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-02-17 04:48:58,354 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:48:58,354 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-02-17 04:48:58,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 04:48:58,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:58,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:48:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:48:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -86837392, now seen corresponding path program 4 times [2023-02-17 04:48:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:48:58,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549302667] [2023-02-17 04:48:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:48:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:48:58,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:48:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900723453] [2023-02-17 04:48:58,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:48:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:48:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:48:58,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:48:58,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 04:49:03,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:49:03,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:49:03,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-17 04:49:03,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:49:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-17 04:49:04,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:49:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-17 04:49:06,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:49:06,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549302667] [2023-02-17 04:49:06,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:49:06,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900723453] [2023-02-17 04:49:06,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900723453] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:49:06,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:49:06,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-02-17 04:49:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540592154] [2023-02-17 04:49:06,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:49:06,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-17 04:49:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:49:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-17 04:49:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2023-02-17 04:49:06,287 INFO L87 Difference]: Start difference. First operand 186 states and 217 transitions. Second operand has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 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 04:49:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:49:11,989 INFO L93 Difference]: Finished difference Result 4495 states and 5280 transitions. [2023-02-17 04:49:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-17 04:49:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 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 177 [2023-02-17 04:49:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:49:12,005 INFO L225 Difference]: With dead ends: 4495 [2023-02-17 04:49:12,005 INFO L226 Difference]: Without dead ends: 4382 [2023-02-17 04:49:12,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2023-02-17 04:49:12,012 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4358 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 04:49:12,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 562 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 04:49:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2023-02-17 04:49:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 330. [2023-02-17 04:49:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.1702127659574468) internal successors, (385), 329 states have internal predecessors, (385), 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 04:49:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 385 transitions. [2023-02-17 04:49:12,058 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 385 transitions. Word has length 177 [2023-02-17 04:49:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:49:12,059 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 385 transitions. [2023-02-17 04:49:12,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 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 04:49:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 385 transitions. [2023-02-17 04:49:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-02-17 04:49:12,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:49:12,063 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 47, 47, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-02-17 04:49:12,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 04:49:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:49:12,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:49:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:49:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash -97064336, now seen corresponding path program 5 times [2023-02-17 04:49:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:49:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781371908] [2023-02-17 04:49:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:49:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:49:12,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:49:12,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68654568] [2023-02-17 04:49:12,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:49:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:49:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:49:12,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:49:12,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process