./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.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 c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 23:20:23,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 23:20:23,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 23:20:23,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 23:20:23,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 23:20:23,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 23:20:23,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 23:20:23,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 23:20:23,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 23:20:23,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 23:20:23,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 23:20:23,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 23:20:23,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 23:20:23,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 23:20:23,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 23:20:23,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 23:20:23,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 23:20:23,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 23:20:23,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 23:20:23,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 23:20:23,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 23:20:23,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 23:20:23,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 23:20:23,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 23:20:23,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 23:20:23,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 23:20:23,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 23:20:23,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 23:20:23,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 23:20:23,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 23:20:23,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 23:20:23,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 23:20:23,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 23:20:23,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 23:20:23,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 23:20:23,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 23:20:23,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 23:20:23,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 23:20:23,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 23:20:23,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 23:20:23,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 23:20:23,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 23:20:23,294 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 23:20:23,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 23:20:23,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 23:20:23,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 23:20:23,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 23:20:23,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 23:20:23,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 23:20:23,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 23:20:23,298 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 23:20:23,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 23:20:23,298 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 23:20:23,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 23:20:23,299 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 23:20:23,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 23:20:23,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 23:20:23,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 23:20:23,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 23:20:23,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:20:23,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 23:20:23,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 23:20:23,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 23:20:23,302 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 23:20:23,302 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 [2023-02-14 23:20:23,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 23:20:23,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 23:20:23,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 23:20:23,503 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 23:20:23,503 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 23:20:23,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2023-02-14 23:20:24,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 23:20:24,570 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 23:20:24,570 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2023-02-14 23:20:24,574 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093c3f9e3/ab8813b7cfe54165bb34b0a521d65a7a/FLAG9a52bd0ad [2023-02-14 23:20:24,954 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093c3f9e3/ab8813b7cfe54165bb34b0a521d65a7a [2023-02-14 23:20:24,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 23:20:24,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 23:20:24,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 23:20:24,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 23:20:24,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 23:20:24,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:20:24" (1/1) ... [2023-02-14 23:20:24,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113cda5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:24, skipping insertion in model container [2023-02-14 23:20:24,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:20:24" (1/1) ... [2023-02-14 23:20:24,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 23:20:24,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 23:20:25,082 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c[319,332] [2023-02-14 23:20:25,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:20:25,097 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 23:20:25,103 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c[319,332] [2023-02-14 23:20:25,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:20:25,112 INFO L208 MainTranslator]: Completed translation [2023-02-14 23:20:25,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25 WrapperNode [2023-02-14 23:20:25,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 23:20:25,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 23:20:25,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 23:20:25,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 23:20:25,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,131 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2023-02-14 23:20:25,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 23:20:25,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 23:20:25,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 23:20:25,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 23:20:25,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 23:20:25,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 23:20:25,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 23:20:25,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 23:20:25,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (1/1) ... [2023-02-14 23:20:25,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:20:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:25,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 23:20:25,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 23:20:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 23:20:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 23:20:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 23:20:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 23:20:25,239 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 23:20:25,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 23:20:25,307 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 23:20:25,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 23:20:25,311 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 23:20:25,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:20:25 BoogieIcfgContainer [2023-02-14 23:20:25,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 23:20:25,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 23:20:25,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 23:20:25,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 23:20:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:20:24" (1/3) ... [2023-02-14 23:20:25,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30434510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:20:25, skipping insertion in model container [2023-02-14 23:20:25,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:20:25" (2/3) ... [2023-02-14 23:20:25,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30434510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:20:25, skipping insertion in model container [2023-02-14 23:20:25,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:20:25" (3/3) ... [2023-02-14 23:20:25,317 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_11.c [2023-02-14 23:20:25,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 23:20:25,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 23:20:25,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 23:20:25,358 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3719c523, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 23:20:25,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 23:20:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 23:20:25,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:25,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 23:20:25,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2023-02-14 23:20:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:25,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655656079] [2023-02-14 23:20:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:25,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:25,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655656079] [2023-02-14 23:20:25,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655656079] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:20:25,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:20:25,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 23:20:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705107837] [2023-02-14 23:20:25,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:20:25,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 23:20:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 23:20:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:20:25,484 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:25,492 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-02-14 23:20:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 23:20:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 23:20:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:25,498 INFO L225 Difference]: With dead ends: 20 [2023-02-14 23:20:25,498 INFO L226 Difference]: Without dead ends: 8 [2023-02-14 23:20:25,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:20:25,503 INFO L413 NwaCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:25,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:20:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-14 23:20:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-14 23:20:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-02-14 23:20:25,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2023-02-14 23:20:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:25,529 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-14 23:20:25,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-02-14 23:20:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 23:20:25,536 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:25,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 23:20:25,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 23:20:25,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2023-02-14 23:20:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:25,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073488367] [2023-02-14 23:20:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:25,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073488367] [2023-02-14 23:20:25,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073488367] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:20:25,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:20:25,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 23:20:25,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400266999] [2023-02-14 23:20:25,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:20:25,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:20:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:20:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:20:25,637 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:25,659 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2023-02-14 23:20:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:20:25,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 23:20:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:25,660 INFO L225 Difference]: With dead ends: 16 [2023-02-14 23:20:25,660 INFO L226 Difference]: Without dead ends: 10 [2023-02-14 23:20:25,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:20:25,661 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:25,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:20:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-14 23:20:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-14 23:20:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-14 23:20:25,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-14 23:20:25,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:25,674 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-14 23:20:25,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-14 23:20:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 23:20:25,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:25,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:25,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 23:20:25,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:25,675 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2023-02-14 23:20:25,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:25,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051723513] [2023-02-14 23:20:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051723513] [2023-02-14 23:20:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051723513] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329447064] [2023-02-14 23:20:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:25,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:25,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:25,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:25,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 23:20:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:25,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 23:20:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:25,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:25,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329447064] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:25,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:25,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 23:20:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62636091] [2023-02-14 23:20:25,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:25,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 23:20:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 23:20:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-14 23:20:25,931 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:25,988 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2023-02-14 23:20:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 23:20:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 23:20:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:25,989 INFO L225 Difference]: With dead ends: 20 [2023-02-14 23:20:25,989 INFO L226 Difference]: Without dead ends: 14 [2023-02-14 23:20:25,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-14 23:20:25,991 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:25,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:20:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-14 23:20:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-14 23:20:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-14 23:20:25,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-02-14 23:20:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:25,995 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-14 23:20:25,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-14 23:20:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 23:20:25,995 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:25,995 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:26,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 23:20:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:26,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 572634524, now seen corresponding path program 1 times [2023-02-14 23:20:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:26,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796106746] [2023-02-14 23:20:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:26,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796106746] [2023-02-14 23:20:26,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796106746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:26,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685792449] [2023-02-14 23:20:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:26,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:26,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 23:20:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:26,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 23:20:26,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:26,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:26,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685792449] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:26,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:26,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-02-14 23:20:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521852128] [2023-02-14 23:20:26,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 23:20:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 23:20:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-02-14 23:20:26,484 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:26,596 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2023-02-14 23:20:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 23:20:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) Word has length 12 [2023-02-14 23:20:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:26,598 INFO L225 Difference]: With dead ends: 26 [2023-02-14 23:20:26,598 INFO L226 Difference]: Without dead ends: 19 [2023-02-14 23:20:26,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-02-14 23:20:26,599 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:26,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:20:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-14 23:20:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-14 23:20:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-02-14 23:20:26,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2023-02-14 23:20:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:26,603 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-02-14 23:20:26,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-02-14 23:20:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 23:20:26,604 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:26,604 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:26,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 23:20:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-14 23:20:26,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -549258615, now seen corresponding path program 2 times [2023-02-14 23:20:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:26,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570674184] [2023-02-14 23:20:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:20:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570674184] [2023-02-14 23:20:26,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570674184] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478726487] [2023-02-14 23:20:26,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:20:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:26,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:26,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 23:20:26,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 23:20:26,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:20:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-14 23:20:26,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:27,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:27,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478726487] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:27,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:27,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2023-02-14 23:20:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204308478] [2023-02-14 23:20:27,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 23:20:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 23:20:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-02-14 23:20:27,146 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:27,587 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-02-14 23:20:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 23:20:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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 18 [2023-02-14 23:20:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:27,588 INFO L225 Difference]: With dead ends: 36 [2023-02-14 23:20:27,588 INFO L226 Difference]: Without dead ends: 25 [2023-02-14 23:20:27,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2023-02-14 23:20:27,589 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:27,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 23:20:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-14 23:20:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-14 23:20:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-02-14 23:20:27,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2023-02-14 23:20:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:27,597 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-02-14 23:20:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-02-14 23:20:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 23:20:27,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:27,598 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:27,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 23:20:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:27,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash 379103926, now seen corresponding path program 3 times [2023-02-14 23:20:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:27,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965482908] [2023-02-14 23:20:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 23:20:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965482908] [2023-02-14 23:20:27,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965482908] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:27,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552277002] [2023-02-14 23:20:27,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 23:20:27,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:27,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:27,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:27,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 23:20:27,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-14 23:20:27,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:20:27,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-14 23:20:27,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:28,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-14 23:20:28,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552277002] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:28,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:28,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 5] total 17 [2023-02-14 23:20:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325460265] [2023-02-14 23:20:28,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:28,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 23:20:28,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 23:20:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-14 23:20:28,169 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:28,248 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2023-02-14 23:20:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 23:20:28,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-14 23:20:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:28,257 INFO L225 Difference]: With dead ends: 55 [2023-02-14 23:20:28,257 INFO L226 Difference]: Without dead ends: 38 [2023-02-14 23:20:28,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-02-14 23:20:28,260 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:28,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:20:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-14 23:20:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2023-02-14 23:20:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-14 23:20:28,275 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2023-02-14 23:20:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:28,275 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-14 23:20:28,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-14 23:20:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 23:20:28,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:28,276 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:28,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 23:20:28,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:28,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash 578706201, now seen corresponding path program 4 times [2023-02-14 23:20:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:28,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227490475] [2023-02-14 23:20:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:28,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 54 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 23:20:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:28,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227490475] [2023-02-14 23:20:28,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227490475] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775403561] [2023-02-14 23:20:28,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 23:20:28,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:28,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:28,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 23:20:28,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 23:20:28,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:20:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 23:20:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:28,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:20:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775403561] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:29,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 24 [2023-02-14 23:20:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744105384] [2023-02-14 23:20:29,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 23:20:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 23:20:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-02-14 23:20:29,046 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:20:33,291 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2023-02-14 23:20:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 23:20:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 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 26 [2023-02-14 23:20:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:20:33,292 INFO L225 Difference]: With dead ends: 68 [2023-02-14 23:20:33,292 INFO L226 Difference]: Without dead ends: 51 [2023-02-14 23:20:33,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=413, Invalid=709, Unknown=0, NotChecked=0, Total=1122 [2023-02-14 23:20:33,293 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 23:20:33,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 18 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 23:20:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-14 23:20:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-14 23:20:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:33,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-02-14 23:20:33,304 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 26 [2023-02-14 23:20:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:20:33,304 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-02-14 23:20:33,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:20:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-02-14 23:20:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 23:20:33,305 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:20:33,306 INFO L195 NwaCegarLoop]: trace histogram [22, 17, 5, 1, 1, 1, 1, 1, 1] [2023-02-14 23:20:33,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 23:20:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:33,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:20:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:20:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1772266179, now seen corresponding path program 5 times [2023-02-14 23:20:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:20:33,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729144833] [2023-02-14 23:20:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:20:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:20:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:20:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 162 proven. 306 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 23:20:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:20:33,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729144833] [2023-02-14 23:20:33,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729144833] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:20:33,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145456594] [2023-02-14 23:20:33,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 23:20:33,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:20:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:20:33,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:20:33,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 23:20:35,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-02-14 23:20:35,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:20:35,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-14 23:20:35,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:20:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-14 23:20:35,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:20:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-14 23:20:36,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145456594] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:20:36,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:20:36,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 22] total 42 [2023-02-14 23:20:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068362515] [2023-02-14 23:20:36,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:20:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-14 23:20:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:20:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-14 23:20:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1222, Unknown=0, NotChecked=0, Total=1722 [2023-02-14 23:20:36,508 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:34,471 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 136 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 23:21:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:21:34,475 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2023-02-14 23:21:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-14 23:21:34,476 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 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 50 [2023-02-14 23:21:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:21:34,476 INFO L225 Difference]: With dead ends: 110 [2023-02-14 23:21:34,476 INFO L226 Difference]: Without dead ends: 93 [2023-02-14 23:21:34,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=1298, Invalid=2362, Unknown=0, NotChecked=0, Total=3660 [2023-02-14 23:21:34,478 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 23:21:34,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 38 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 23:21:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-14 23:21:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-14 23:21:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.076086956521739) internal successors, (99), 92 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2023-02-14 23:21:34,492 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 50 [2023-02-14 23:21:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:21:34,493 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2023-02-14 23:21:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2023-02-14 23:21:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-14 23:21:34,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:21:34,496 INFO L195 NwaCegarLoop]: trace histogram [42, 37, 5, 1, 1, 1, 1, 1, 1] [2023-02-14 23:21:34,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-14 23:21:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:21:34,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:21:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:21:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2108613767, now seen corresponding path program 6 times [2023-02-14 23:21:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:21:34,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114534913] [2023-02-14 23:21:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:21:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:21:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:21:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 342 proven. 1406 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 23:21:35,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:21:35,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114534913] [2023-02-14 23:21:35,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114534913] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:21:35,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682166876] [2023-02-14 23:21:35,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 23:21:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:21:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:21:35,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:21:35,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 23:21:36,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-02-14 23:21:36,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:21:36,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-14 23:21:36,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:21:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 407 proven. 25 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2023-02-14 23:21:37,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:21:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 407 proven. 25 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2023-02-14 23:21:38,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682166876] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:21:38,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:21:38,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 8, 11] total 55 [2023-02-14 23:21:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685528555] [2023-02-14 23:21:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:21:38,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-02-14 23:21:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:21:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-02-14 23:21:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=2389, Unknown=0, NotChecked=0, Total=2970 [2023-02-14 23:21:38,425 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:21:41,385 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2023-02-14 23:21:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-14 23:21:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 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 90 [2023-02-14 23:21:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:21:41,386 INFO L225 Difference]: With dead ends: 129 [2023-02-14 23:21:41,386 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 23:21:41,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=747, Invalid=3159, Unknown=0, NotChecked=0, Total=3906 [2023-02-14 23:21:41,388 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:21:41,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2926 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-14 23:21:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 23:21:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 23:21:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 23:21:41,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2023-02-14 23:21:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:21:41,389 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 23:21:41,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:21:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 23:21:41,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 23:21:41,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 23:21:41,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 23:21:41,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:21:41,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 23:21:47,658 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 290 DAG size of output: 13 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 23:21:47,661 INFO L899 garLoopResultBuilder]: For program point L4-3(line 4) no Hoare annotation was computed. [2023-02-14 23:21:47,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 23:21:47,661 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 23:21:47,661 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 13) no Hoare annotation was computed. [2023-02-14 23:21:47,661 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 5 18) the Hoare annotation is: true [2023-02-14 23:21:47,661 INFO L895 garLoopResultBuilder]: At program point L9-2(lines 8 14) the Hoare annotation is: (or (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 10000000)) [2023-02-14 23:21:47,661 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 23:21:47,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 23:21:47,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2023-02-14 23:21:47,662 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 8 14) no Hoare annotation was computed. [2023-02-14 23:21:47,662 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2023-02-14 23:21:47,662 INFO L899 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2023-02-14 23:21:47,664 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-02-14 23:21:47,665 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 23:21:47,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:21:47 BoogieIcfgContainer [2023-02-14 23:21:47,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 23:21:47,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 23:21:47,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 23:21:47,677 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 23:21:47,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:20:25" (3/4) ... [2023-02-14 23:21:47,679 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 23:21:47,690 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-14 23:21:47,691 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 23:21:47,691 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 23:21:47,691 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 23:21:47,710 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 23:21:47,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 23:21:47,711 INFO L158 Benchmark]: Toolchain (without parser) took 82752.82ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 107.1MB in the beginning and 66.6MB in the end (delta: 40.5MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,711 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 107.0MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:21:47,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.28ms. Allocated memory is still 138.4MB. Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.48ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,712 INFO L158 Benchmark]: Boogie Preprocessor took 10.47ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 971.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:21:47,712 INFO L158 Benchmark]: RCFGBuilder took 170.09ms. Allocated memory is still 138.4MB. Free memory was 94.7MB in the beginning and 86.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,712 INFO L158 Benchmark]: TraceAbstraction took 82362.82ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 85.2MB in the beginning and 68.7MB in the end (delta: 16.5MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,712 INFO L158 Benchmark]: Witness Printer took 33.70ms. Allocated memory is still 172.0MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 23:21:47,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 107.0MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.28ms. Allocated memory is still 138.4MB. Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.48ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.47ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 971.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 170.09ms. Allocated memory is still 138.4MB. Free memory was 94.7MB in the beginning and 86.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 82362.82ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 85.2MB in the beginning and 68.7MB in the end (delta: 16.5MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. * Witness Printer took 33.70ms. Allocated memory is still 172.0MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.3s, OverallIterations: 9, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 66.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 196 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4201 IncrementalHoareTripleChecker+Invalid, 4381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 56 mSDtfsCounter, 4201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 595 GetRequests, 379 SyntacticMatches, 11 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 67.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 57 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 4599 FormulaSimplificationTreeSizeReductionInter, 6.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 468 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 673 ConstructedInterpolants, 0 QuantifiedInterpolants, 3591 SizeOfPredicates, 7 NumberOfNonLiveVariables, 537 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 4527/7425 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: x % 2 % 4294967296 == 0 || (4294967295 + x) % 4294967296 < 10000000 RESULT: Ultimate proved your program to be correct! [2023-02-14 23:21:47,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE