./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_4.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 d56d00b0e11a2318dd34043554d32ecd228c75c86ba1d3fcabadd2cc271a05aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:31:11,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:31:11,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:31:11,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:31:11,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:31:11,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:31:11,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:31:11,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:31:11,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:31:11,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:31:11,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:31:11,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:31:11,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:31:11,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:31:11,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:31:11,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:31:11,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:31:11,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:31:11,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:31:11,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:31:11,535 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:31:11,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:31:11,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:31:11,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:31:11,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:31:11,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:31:11,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:31:11,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:31:11,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:31:11,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:31:11,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:31:11,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:31:11,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:31:11,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:31:11,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:31:11,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:31:11,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:31:11,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:31:11,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:31:11,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:31:11,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:31:11,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:31:11,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:31:11,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:31:11,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:31:11,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:31:11,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:31:11,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:31:11,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:31:11,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:31:11,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:31:11,572 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:31:11,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:31:11,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:31:11,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:31:11,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:31:11,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:31:11,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:31:11,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:31:11,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:31:11,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:31:11,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:31:11,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:31:11,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:31:11,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:31:11,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:31:11,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:31:11,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:31:11,577 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:31:11,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:31:11,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:31:11,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d56d00b0e11a2318dd34043554d32ecd228c75c86ba1d3fcabadd2cc271a05aa [2022-07-11 22:31:11,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:31:11,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:31:11,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:31:11,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:31:11,786 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:31:11,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_4.c [2022-07-11 22:31:11,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a810587/40dcd7d58c7c4a369ccb565bc727fe3c/FLAGb7e7d0f4e [2022-07-11 22:31:12,213 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:31:12,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c [2022-07-11 22:31:12,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a810587/40dcd7d58c7c4a369ccb565bc727fe3c/FLAGb7e7d0f4e [2022-07-11 22:31:12,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a810587/40dcd7d58c7c4a369ccb565bc727fe3c [2022-07-11 22:31:12,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:31:12,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:31:12,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:31:12,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:31:12,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:31:12,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a4833d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12, skipping insertion in model container [2022-07-11 22:31:12,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:31:12,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:31:12,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c[323,336] [2022-07-11 22:31:12,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:31:12,823 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:31:12,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c[323,336] [2022-07-11 22:31:12,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:31:12,854 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:31:12,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12 WrapperNode [2022-07-11 22:31:12,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:31:12,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:31:12,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:31:12,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:31:12,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,885 INFO L137 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-11 22:31:12,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:31:12,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:31:12,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:31:12,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:31:12,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:31:12,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:31:12,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:31:12,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:31:12,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (1/1) ... [2022-07-11 22:31:12,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:31:12,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:12,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-11 22:31:12,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-11 22:31:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:31:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:31:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:31:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:31:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:31:12,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:31:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:31:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:31:13,027 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:31:13,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:31:13,116 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:31:13,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:31:13,121 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-11 22:31:13,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:31:13 BoogieIcfgContainer [2022-07-11 22:31:13,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:31:13,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:31:13,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:31:13,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:31:13,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:31:12" (1/3) ... [2022-07-11 22:31:13,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298de5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:31:13, skipping insertion in model container [2022-07-11 22:31:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:31:12" (2/3) ... [2022-07-11 22:31:13,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298de5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:31:13, skipping insertion in model container [2022-07-11 22:31:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:31:13" (3/3) ... [2022-07-11 22:31:13,128 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_4.c [2022-07-11 22:31:13,139 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:31:13,139 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:31:13,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:31:13,176 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31f24c4a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7919773e [2022-07-11 22:31:13,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:31:13,180 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) [2022-07-11 22:31:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-11 22:31:13,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:13,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:13,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2022-07-11 22:31:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:13,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491634032] [2022-07-11 22:31:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491634032] [2022-07-11 22:31:13,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491634032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:31:13,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:31:13,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 22:31:13,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693936848] [2022-07-11 22:31:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:31:13,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 22:31:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 22:31:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:31:13,328 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) [2022-07-11 22:31:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:13,339 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-07-11 22:31:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 22:31:13,342 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 [2022-07-11 22:31:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:13,347 INFO L225 Difference]: With dead ends: 31 [2022-07-11 22:31:13,347 INFO L226 Difference]: Without dead ends: 14 [2022-07-11 22:31:13,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:31:13,356 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 [2022-07-11 22:31:13,357 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] [2022-07-11 22:31:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-11 22:31:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-11 22:31:13,379 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) [2022-07-11 22:31:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-11 22:31:13,380 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2022-07-11 22:31:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:13,381 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-11 22:31:13,382 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) [2022-07-11 22:31:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-07-11 22:31:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-11 22:31:13,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:13,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:13,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 22:31:13,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2022-07-11 22:31:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:13,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537904756] [2022-07-11 22:31:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:13,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:13,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537904756] [2022-07-11 22:31:13,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537904756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:31:13,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:31:13,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 22:31:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809253444] [2022-07-11 22:31:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:31:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:31:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:31:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:31:13,473 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) [2022-07-11 22:31:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:13,541 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-11 22:31:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 22:31:13,541 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 [2022-07-11 22:31:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:13,542 INFO L225 Difference]: With dead ends: 37 [2022-07-11 22:31:13,542 INFO L226 Difference]: Without dead ends: 25 [2022-07-11 22:31:13,542 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 [2022-07-11 22:31:13,543 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:13,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:31:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-11 22:31:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-07-11 22:31:13,551 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) [2022-07-11 22:31:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-07-11 22:31:13,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2022-07-11 22:31:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:13,552 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-07-11 22:31:13,552 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) [2022-07-11 22:31:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-07-11 22:31:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-11 22:31:13,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:13,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:13,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 22:31:13,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:13,554 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2022-07-11 22:31:13,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:13,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784904392] [2022-07-11 22:31:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:13,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784904392] [2022-07-11 22:31:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784904392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:31:13,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406627550] [2022-07-11 22:31:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:13,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:13,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:13,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:31:13,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 22:31:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:31:13,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:13,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:13,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406627550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:13,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:31:13,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-07-11 22:31:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009145510] [2022-07-11 22:31:13,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:13,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-11 22:31:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-11 22:31:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-07-11 22:31:13,842 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) [2022-07-11 22:31:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:13,955 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-11 22:31:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 22:31:13,956 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 [2022-07-11 22:31:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:13,956 INFO L225 Difference]: With dead ends: 61 [2022-07-11 22:31:13,957 INFO L226 Difference]: Without dead ends: 49 [2022-07-11 22:31:13,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:31:13,958 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:13,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 32 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:31:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-11 22:31:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2022-07-11 22:31:13,963 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) [2022-07-11 22:31:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-11 22:31:13,964 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2022-07-11 22:31:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-11 22:31:13,964 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) [2022-07-11 22:31:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-11 22:31:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-11 22:31:13,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:13,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:13,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:14,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:14,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2022-07-11 22:31:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:14,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557352532] [2022-07-11 22:31:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:14,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224238014] [2022-07-11 22:31:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:14,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:14,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:31:14,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 22:31:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:14,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 22:31:14,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:14,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:14,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557352532] [2022-07-11 22:31:14,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:14,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224238014] [2022-07-11 22:31:14,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224238014] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:14,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:14,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-11 22:31:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877602792] [2022-07-11 22:31:14,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:14,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 22:31:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 22:31:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-07-11 22:31:14,478 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) [2022-07-11 22:31:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:14,691 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2022-07-11 22:31:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 22:31:14,692 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 [2022-07-11 22:31:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:14,697 INFO L225 Difference]: With dead ends: 131 [2022-07-11 22:31:14,697 INFO L226 Difference]: Without dead ends: 117 [2022-07-11 22:31:14,698 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 [2022-07-11 22:31:14,701 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 324 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:14,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 62 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:31:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-11 22:31:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 42. [2022-07-11 22:31:14,725 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) [2022-07-11 22:31:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-07-11 22:31:14,727 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2022-07-11 22:31:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:14,727 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-07-11 22:31:14,728 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) [2022-07-11 22:31:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-07-11 22:31:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 22:31:14,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:14,729 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:14,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:14,943 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 [2022-07-11 22:31:14,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash 194524081, now seen corresponding path program 2 times [2022-07-11 22:31:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849102237] [2022-07-11 22:31:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:14,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:14,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795346936] [2022-07-11 22:31:14,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:31:14,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:14,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:31:14,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 22:31:15,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-11 22:31:15,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:15,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:31:15,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-11 22:31:15,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:31:15,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849102237] [2022-07-11 22:31:15,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795346936] [2022-07-11 22:31:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795346936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:31:15,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:31:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 22:31:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179061246] [2022-07-11 22:31:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:31:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 22:31:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 22:31:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-11 22:31:15,177 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) [2022-07-11 22:31:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:15,221 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-07-11 22:31:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:31:15,222 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 [2022-07-11 22:31:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:15,223 INFO L225 Difference]: With dead ends: 61 [2022-07-11 22:31:15,223 INFO L226 Difference]: Without dead ends: 59 [2022-07-11 22:31:15,223 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 [2022-07-11 22:31:15,224 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:15,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:31:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-11 22:31:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2022-07-11 22:31:15,229 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) [2022-07-11 22:31:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-11 22:31:15,230 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 39 [2022-07-11 22:31:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:15,230 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-11 22:31:15,230 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) [2022-07-11 22:31:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-11 22:31:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 22:31:15,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:15,231 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:15,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:15,447 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 [2022-07-11 22:31:15,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash -838184220, now seen corresponding path program 1 times [2022-07-11 22:31:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:15,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798002765] [2022-07-11 22:31:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:15,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:15,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885732813] [2022-07-11 22:31:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:15,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:15,469 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) [2022-07-11 22:31:15,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 22:31:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:31:15,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 22:31:15,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:31:15,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:31:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798002765] [2022-07-11 22:31:15,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885732813] [2022-07-11 22:31:15,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885732813] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:15,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:15,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-07-11 22:31:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835049267] [2022-07-11 22:31:15,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-11 22:31:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-11 22:31:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-07-11 22:31:15,934 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) [2022-07-11 22:31:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:16,413 INFO L93 Difference]: Finished difference Result 547 states and 646 transitions. [2022-07-11 22:31:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-11 22:31:16,414 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 [2022-07-11 22:31:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:16,416 INFO L225 Difference]: With dead ends: 547 [2022-07-11 22:31:16,416 INFO L226 Difference]: Without dead ends: 512 [2022-07-11 22:31:16,417 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 [2022-07-11 22:31:16,418 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 983 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:16,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 134 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 22:31:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-11 22:31:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 90. [2022-07-11 22:31:16,434 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) [2022-07-11 22:31:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2022-07-11 22:31:16,435 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2022-07-11 22:31:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:16,436 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2022-07-11 22:31:16,436 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) [2022-07-11 22:31:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2022-07-11 22:31:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-11 22:31:16,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:16,437 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:16,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:16,654 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 [2022-07-11 22:31:16,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1895724964, now seen corresponding path program 2 times [2022-07-11 22:31:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:16,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374920631] [2022-07-11 22:31:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:16,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:16,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294966820] [2022-07-11 22:31:16,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:31:16,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:16,687 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) [2022-07-11 22:31:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 22:31:16,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:31:16,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:16,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-11 22:31:16,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:31:17,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:31:17,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:17,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374920631] [2022-07-11 22:31:17,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:17,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294966820] [2022-07-11 22:31:17,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294966820] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:17,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:17,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2022-07-11 22:31:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660069581] [2022-07-11 22:31:17,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-11 22:31:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-11 22:31:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2022-07-11 22:31:17,811 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) [2022-07-11 22:31:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:19,248 INFO L93 Difference]: Finished difference Result 1135 states and 1342 transitions. [2022-07-11 22:31:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-11 22:31:19,248 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 [2022-07-11 22:31:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:19,251 INFO L225 Difference]: With dead ends: 1135 [2022-07-11 22:31:19,252 INFO L226 Difference]: Without dead ends: 1082 [2022-07-11 22:31:19,253 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 [2022-07-11 22:31:19,254 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1681 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:19,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 278 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 22:31:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-07-11 22:31:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 162. [2022-07-11 22:31:19,283 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) [2022-07-11 22:31:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2022-07-11 22:31:19,288 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 81 [2022-07-11 22:31:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:19,290 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2022-07-11 22:31:19,290 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) [2022-07-11 22:31:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2022-07-11 22:31:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-11 22:31:19,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:19,297 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:19,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:19,511 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 [2022-07-11 22:31:19,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash 694735140, now seen corresponding path program 3 times [2022-07-11 22:31:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:19,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106295647] [2022-07-11 22:31:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:19,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860235366] [2022-07-11 22:31:19,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:31:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:19,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:19,599 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) [2022-07-11 22:31:19,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 22:31:19,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-11 22:31:19,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:19,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 22:31:19,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-07-11 22:31:20,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-07-11 22:31:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106295647] [2022-07-11 22:31:20,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860235366] [2022-07-11 22:31:20,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860235366] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:20,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:20,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-11 22:31:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214786685] [2022-07-11 22:31:20,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:20,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 22:31:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 22:31:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-11 22:31:20,955 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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) [2022-07-11 22:31:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:21,114 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2022-07-11 22:31:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 22:31:21,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 153 [2022-07-11 22:31:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:21,115 INFO L225 Difference]: With dead ends: 193 [2022-07-11 22:31:21,116 INFO L226 Difference]: Without dead ends: 191 [2022-07-11 22:31:21,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-07-11 22:31:21,117 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:21,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 42 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:31:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-11 22:31:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2022-07-11 22:31:21,128 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) [2022-07-11 22:31:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 217 transitions. [2022-07-11 22:31:21,129 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 217 transitions. Word has length 153 [2022-07-11 22:31:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:21,130 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 217 transitions. [2022-07-11 22:31:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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) [2022-07-11 22:31:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 217 transitions. [2022-07-11 22:31:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-11 22:31:21,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:21,131 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:21,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:21,343 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 [2022-07-11 22:31:21,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -86837392, now seen corresponding path program 4 times [2022-07-11 22:31:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:21,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658097314] [2022-07-11 22:31:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:21,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234368020] [2022-07-11 22:31:21,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:31:21,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:21,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:21,378 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) [2022-07-11 22:31:21,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 22:31:21,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:31:21,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:21,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 106 conjunts are in the unsatisfiable core [2022-07-11 22:31:21,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 76 proven. 3155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:23,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 76 proven. 3155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:31:29,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:29,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658097314] [2022-07-11 22:31:29,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:29,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234368020] [2022-07-11 22:31:29,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234368020] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:29,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:29,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 111 [2022-07-11 22:31:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401193756] [2022-07-11 22:31:29,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:29,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-07-11 22:31:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-07-11 22:31:29,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2649, Invalid=9561, Unknown=0, NotChecked=0, Total=12210 [2022-07-11 22:31:29,250 INFO L87 Difference]: Start difference. First operand 186 states and 217 transitions. Second operand has 111 states, 111 states have (on average 3.108108108108108) internal successors, (345), 111 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:32:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:32:32,687 INFO L93 Difference]: Finished difference Result 5995 states and 7645 transitions. [2022-07-11 22:32:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 571 states. [2022-07-11 22:32:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.108108108108108) internal successors, (345), 111 states have internal predecessors, (345), 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 [2022-07-11 22:32:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:32:32,694 INFO L225 Difference]: With dead ends: 5995 [2022-07-11 22:32:32,694 INFO L226 Difference]: Without dead ends: 994 [2022-07-11 22:32:32,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 648 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157481 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=54380, Invalid=367470, Unknown=0, NotChecked=0, Total=421850 [2022-07-11 22:32:32,736 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 7415 mSDsluCounter, 8801 mSDsCounter, 0 mSdLazyCounter, 23262 mSolverCounterSat, 2842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7415 SdHoareTripleChecker+Valid, 8950 SdHoareTripleChecker+Invalid, 26104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2842 IncrementalHoareTripleChecker+Valid, 23262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-07-11 22:32:32,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7415 Valid, 8950 Invalid, 26104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2842 Valid, 23262 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-07-11 22:32:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-07-11 22:32:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 192. [2022-07-11 22:32:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.1675392670157068) internal successors, (223), 191 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:32:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 223 transitions. [2022-07-11 22:32:32,756 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 223 transitions. Word has length 177 [2022-07-11 22:32:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:32:32,756 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 223 transitions. [2022-07-11 22:32:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.108108108108108) internal successors, (345), 111 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:32:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 223 transitions. [2022-07-11 22:32:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-11 22:32:32,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:32:32,758 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 25, 23, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-11 22:32:32,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 22:32:32,965 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 [2022-07-11 22:32:32,965 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:32:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:32:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -473721552, now seen corresponding path program 5 times [2022-07-11 22:32:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:32:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193477015] [2022-07-11 22:32:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:32:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:32:33,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:32:33,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701135112] [2022-07-11 22:32:33,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 22:32:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:32:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:32:33,032 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) [2022-07-11 22:32:33,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process