./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_7.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 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:24:34,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:24:34,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:24:34,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:24:34,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:24:34,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:24:34,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:24:34,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:24:34,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:24:34,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:24:34,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:24:34,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:24:34,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:24:34,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:24:34,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:24:34,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:24:34,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:24:34,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:24:34,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:24:34,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:24:34,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:24:34,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:24:34,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:24:34,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:24:34,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:24:34,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:24:34,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:24:34,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:24:34,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:24:34,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:24:34,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:24:34,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:24:34,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:24:34,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:24:34,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:24:34,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:24:34,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:24:34,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:24:34,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:24:34,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:24:34,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:24:34,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:24:34,661 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:24:34,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:24:34,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:24:34,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:24:34,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:24:34,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:24:34,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:24:34,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:24:34,664 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:24:34,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:24:34,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:24:34,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:24:34,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:24:34,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:24:34,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:24:34,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:24:34,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:24:34,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:24:34,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:24:34,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:24:34,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2023-02-17 00:24:34,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:24:34,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:24:34,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:24:34,896 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:24:34,896 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:24:34,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2023-02-17 00:24:35,887 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:24:36,074 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:24:36,075 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2023-02-17 00:24:36,080 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2995f00/7c214faf1e2148ce91838c5e6f92518b/FLAGf7ec3df08 [2023-02-17 00:24:36,099 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2995f00/7c214faf1e2148ce91838c5e6f92518b [2023-02-17 00:24:36,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:24:36,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:24:36,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:24:36,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:24:36,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:24:36,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140cfd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36, skipping insertion in model container [2023-02-17 00:24:36,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:24:36,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:24:36,229 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/locks/test_locks_7.c[2881,2894] [2023-02-17 00:24:36,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:24:36,239 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:24:36,259 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/locks/test_locks_7.c[2881,2894] [2023-02-17 00:24:36,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:24:36,269 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:24:36,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36 WrapperNode [2023-02-17 00:24:36,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:24:36,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:24:36,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:24:36,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:24:36,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,291 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2023-02-17 00:24:36,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:24:36,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:24:36,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:24:36,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:24:36,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:24:36,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:24:36,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:24:36,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:24:36,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (1/1) ... [2023-02-17 00:24:36,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:24:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:24:36,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 00:24:36,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 00:24:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:24:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:24:36,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:24:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:24:36,419 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:24:36,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:24:36,613 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:24:36,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:24:36,617 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 00:24:36,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:24:36 BoogieIcfgContainer [2023-02-17 00:24:36,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:24:36,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:24:36,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:24:36,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:24:36,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:24:36" (1/3) ... [2023-02-17 00:24:36,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ffceda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:24:36, skipping insertion in model container [2023-02-17 00:24:36,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:24:36" (2/3) ... [2023-02-17 00:24:36,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ffceda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:24:36, skipping insertion in model container [2023-02-17 00:24:36,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:24:36" (3/3) ... [2023-02-17 00:24:36,624 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2023-02-17 00:24:36,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:24:36,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:24:36,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:24:36,669 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;@39fa0686, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:24:36,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:24:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 00:24:36,676 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:36,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:36,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2023-02-17 00:24:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344854721] [2023-02-17 00:24:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:36,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:36,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344854721] [2023-02-17 00:24:36,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344854721] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:36,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:36,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127559054] [2023-02-17 00:24:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:36,906 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-02-17 00:24:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:36,957 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2023-02-17 00:24:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 14 [2023-02-17 00:24:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:36,971 INFO L225 Difference]: With dead ends: 65 [2023-02-17 00:24:36,971 INFO L226 Difference]: Without dead ends: 51 [2023-02-17 00:24:36,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:36,993 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:36,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 103 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-17 00:24:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2023-02-17 00:24:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 34 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2023-02-17 00:24:37,027 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2023-02-17 00:24:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2023-02-17 00:24:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-02-17 00:24:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2023-02-17 00:24:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 00:24:37,030 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:24:37,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2023-02-17 00:24:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918887302] [2023-02-17 00:24:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918887302] [2023-02-17 00:24:37,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918887302] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758250368] [2023-02-17 00:24:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,107 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-02-17 00:24:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,134 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2023-02-17 00:24:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 14 [2023-02-17 00:24:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,136 INFO L225 Difference]: With dead ends: 84 [2023-02-17 00:24:37,136 INFO L226 Difference]: Without dead ends: 51 [2023-02-17 00:24:37,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,137 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-17 00:24:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-17 00:24:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 48 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2023-02-17 00:24:37,142 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2023-02-17 00:24:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,143 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2023-02-17 00:24:37,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-02-17 00:24:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2023-02-17 00:24:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 00:24:37,143 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:24:37,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2023-02-17 00:24:37,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497740836] [2023-02-17 00:24:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497740836] [2023-02-17 00:24:37,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497740836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786938102] [2023-02-17 00:24:37,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,184 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,210 INFO L93 Difference]: Finished difference Result 78 states and 132 transitions. [2023-02-17 00:24:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2023-02-17 00:24:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,213 INFO L225 Difference]: With dead ends: 78 [2023-02-17 00:24:37,214 INFO L226 Difference]: Without dead ends: 54 [2023-02-17 00:24:37,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,216 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-17 00:24:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-02-17 00:24:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 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) [2023-02-17 00:24:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2023-02-17 00:24:37,221 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2023-02-17 00:24:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,222 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2023-02-17 00:24:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2023-02-17 00:24:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 00:24:37,223 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:24:37,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2023-02-17 00:24:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397739787] [2023-02-17 00:24:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397739787] [2023-02-17 00:24:37,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397739787] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651052606] [2023-02-17 00:24:37,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,263 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,274 INFO L93 Difference]: Finished difference Result 97 states and 165 transitions. [2023-02-17 00:24:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2023-02-17 00:24:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,277 INFO L225 Difference]: With dead ends: 97 [2023-02-17 00:24:37,277 INFO L226 Difference]: Without dead ends: 95 [2023-02-17 00:24:37,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,282 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-17 00:24:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2023-02-17 00:24:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2023-02-17 00:24:37,295 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2023-02-17 00:24:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,296 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2023-02-17 00:24:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2023-02-17 00:24:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 00:24:37,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 00:24:37,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2023-02-17 00:24:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417423675] [2023-02-17 00:24:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417423675] [2023-02-17 00:24:37,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417423675] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140008393] [2023-02-17 00:24:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,330 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,341 INFO L93 Difference]: Finished difference Result 161 states and 275 transitions. [2023-02-17 00:24:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2023-02-17 00:24:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,342 INFO L225 Difference]: With dead ends: 161 [2023-02-17 00:24:37,342 INFO L226 Difference]: Without dead ends: 97 [2023-02-17 00:24:37,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,346 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-17 00:24:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-02-17 00:24:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 94 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2023-02-17 00:24:37,360 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2023-02-17 00:24:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,361 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2023-02-17 00:24:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-02-17 00:24:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2023-02-17 00:24:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:24:37,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 00:24:37,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2023-02-17 00:24:37,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423046690] [2023-02-17 00:24:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423046690] [2023-02-17 00:24:37,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423046690] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948604883] [2023-02-17 00:24:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,400 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,416 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2023-02-17 00:24:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-17 00:24:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,417 INFO L225 Difference]: With dead ends: 144 [2023-02-17 00:24:37,417 INFO L226 Difference]: Without dead ends: 99 [2023-02-17 00:24:37,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,418 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-17 00:24:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2023-02-17 00:24:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.65625) internal successors, (159), 96 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2023-02-17 00:24:37,431 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2023-02-17 00:24:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,431 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2023-02-17 00:24:37,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2023-02-17 00:24:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:24:37,432 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 00:24:37,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2023-02-17 00:24:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522203177] [2023-02-17 00:24:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522203177] [2023-02-17 00:24:37,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522203177] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314956566] [2023-02-17 00:24:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,479 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,502 INFO L93 Difference]: Finished difference Result 273 states and 449 transitions. [2023-02-17 00:24:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-17 00:24:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,503 INFO L225 Difference]: With dead ends: 273 [2023-02-17 00:24:37,503 INFO L226 Difference]: Without dead ends: 183 [2023-02-17 00:24:37,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,504 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-17 00:24:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-02-17 00:24:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6166666666666667) internal successors, (291), 180 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2023-02-17 00:24:37,512 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2023-02-17 00:24:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,512 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2023-02-17 00:24:37,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2023-02-17 00:24:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:24:37,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 00:24:37,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2023-02-17 00:24:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327604127] [2023-02-17 00:24:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327604127] [2023-02-17 00:24:37,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327604127] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099137077] [2023-02-17 00:24:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,530 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,538 INFO L93 Difference]: Finished difference Result 225 states and 365 transitions. [2023-02-17 00:24:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-17 00:24:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,539 INFO L225 Difference]: With dead ends: 225 [2023-02-17 00:24:37,539 INFO L226 Difference]: Without dead ends: 223 [2023-02-17 00:24:37,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,540 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-02-17 00:24:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2023-02-17 00:24:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 180 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2023-02-17 00:24:37,552 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2023-02-17 00:24:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,553 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2023-02-17 00:24:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2023-02-17 00:24:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:24:37,554 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 00:24:37,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2023-02-17 00:24:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731992477] [2023-02-17 00:24:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731992477] [2023-02-17 00:24:37,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731992477] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654634697] [2023-02-17 00:24:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,572 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,587 INFO L93 Difference]: Finished difference Result 325 states and 521 transitions. [2023-02-17 00:24:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-17 00:24:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,588 INFO L225 Difference]: With dead ends: 325 [2023-02-17 00:24:37,589 INFO L226 Difference]: Without dead ends: 323 [2023-02-17 00:24:37,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,590 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-02-17 00:24:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2023-02-17 00:24:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.55859375) internal successors, (399), 256 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2023-02-17 00:24:37,608 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2023-02-17 00:24:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2023-02-17 00:24:37,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2023-02-17 00:24:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:24:37,609 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 00:24:37,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2023-02-17 00:24:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439590106] [2023-02-17 00:24:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439590106] [2023-02-17 00:24:37,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439590106] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719030642] [2023-02-17 00:24:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,638 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,648 INFO L93 Difference]: Finished difference Result 597 states and 929 transitions. [2023-02-17 00:24:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-17 00:24:37,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,649 INFO L225 Difference]: With dead ends: 597 [2023-02-17 00:24:37,650 INFO L226 Difference]: Without dead ends: 347 [2023-02-17 00:24:37,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,651 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 104 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-02-17 00:24:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-02-17 00:24:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.5203488372093024) internal successors, (523), 344 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2023-02-17 00:24:37,658 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2023-02-17 00:24:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,658 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2023-02-17 00:24:37,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2023-02-17 00:24:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:24:37,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 00:24:37,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2023-02-17 00:24:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256784160] [2023-02-17 00:24:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256784160] [2023-02-17 00:24:37,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256784160] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809149902] [2023-02-17 00:24:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,673 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,682 INFO L93 Difference]: Finished difference Result 525 states and 793 transitions. [2023-02-17 00:24:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2023-02-17 00:24:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,684 INFO L225 Difference]: With dead ends: 525 [2023-02-17 00:24:37,684 INFO L226 Difference]: Without dead ends: 359 [2023-02-17 00:24:37,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,690 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-02-17 00:24:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2023-02-17 00:24:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4915730337078652) internal successors, (531), 356 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2023-02-17 00:24:37,701 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2023-02-17 00:24:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,701 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2023-02-17 00:24:37,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2023-02-17 00:24:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:24:37,702 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 00:24:37,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2023-02-17 00:24:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584086270] [2023-02-17 00:24:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584086270] [2023-02-17 00:24:37,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584086270] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628486217] [2023-02-17 00:24:37,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,717 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,727 INFO L93 Difference]: Finished difference Result 617 states and 925 transitions. [2023-02-17 00:24:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2023-02-17 00:24:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,729 INFO L225 Difference]: With dead ends: 617 [2023-02-17 00:24:37,729 INFO L226 Difference]: Without dead ends: 615 [2023-02-17 00:24:37,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,730 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-02-17 00:24:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2023-02-17 00:24:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.447674418604651) internal successors, (747), 516 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2023-02-17 00:24:37,740 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2023-02-17 00:24:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,740 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2023-02-17 00:24:37,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2023-02-17 00:24:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:24:37,741 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 00:24:37,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2023-02-17 00:24:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235265218] [2023-02-17 00:24:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235265218] [2023-02-17 00:24:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235265218] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573441843] [2023-02-17 00:24:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,763 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,777 INFO L93 Difference]: Finished difference Result 1177 states and 1693 transitions. [2023-02-17 00:24:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2023-02-17 00:24:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,779 INFO L225 Difference]: With dead ends: 1177 [2023-02-17 00:24:37,779 INFO L226 Difference]: Without dead ends: 679 [2023-02-17 00:24:37,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,780 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-02-17 00:24:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2023-02-17 00:24:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.400887573964497) internal successors, (947), 676 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2023-02-17 00:24:37,793 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2023-02-17 00:24:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,793 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2023-02-17 00:24:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2023-02-17 00:24:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:24:37,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 00:24:37,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2023-02-17 00:24:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101875974] [2023-02-17 00:24:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101875974] [2023-02-17 00:24:37,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101875974] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543547616] [2023-02-17 00:24:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,809 INFO L87 Difference]: Start difference. First operand 677 states and 947 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,821 INFO L93 Difference]: Finished difference Result 1017 states and 1413 transitions. [2023-02-17 00:24:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 00:24:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,823 INFO L225 Difference]: With dead ends: 1017 [2023-02-17 00:24:37,823 INFO L226 Difference]: Without dead ends: 695 [2023-02-17 00:24:37,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,824 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-02-17 00:24:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2023-02-17 00:24:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.3684971098265897) internal successors, (947), 692 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2023-02-17 00:24:37,837 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2023-02-17 00:24:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,837 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2023-02-17 00:24:37,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2023-02-17 00:24:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:24:37,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 00:24:37,838 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2023-02-17 00:24:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547716945] [2023-02-17 00:24:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547716945] [2023-02-17 00:24:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547716945] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998281970] [2023-02-17 00:24:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,851 INFO L87 Difference]: Start difference. First operand 693 states and 947 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,877 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2023-02-17 00:24:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 00:24:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,880 INFO L225 Difference]: With dead ends: 1161 [2023-02-17 00:24:37,880 INFO L226 Difference]: Without dead ends: 1159 [2023-02-17 00:24:37,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,882 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-02-17 00:24:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2023-02-17 00:24:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.325875486381323) internal successors, (1363), 1028 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2023-02-17 00:24:37,902 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2023-02-17 00:24:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,902 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2023-02-17 00:24:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2023-02-17 00:24:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:24:37,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 00:24:37,905 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2023-02-17 00:24:37,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533856959] [2023-02-17 00:24:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:37,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533856959] [2023-02-17 00:24:37,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533856959] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:37,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:37,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951361885] [2023-02-17 00:24:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,934 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:37,964 INFO L93 Difference]: Finished difference Result 2313 states and 3029 transitions. [2023-02-17 00:24:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:37,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 00:24:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:37,967 INFO L225 Difference]: With dead ends: 2313 [2023-02-17 00:24:37,967 INFO L226 Difference]: Without dead ends: 1319 [2023-02-17 00:24:37,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:37,969 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:37,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-02-17 00:24:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2023-02-17 00:24:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.2667173252279635) internal successors, (1667), 1316 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2023-02-17 00:24:37,996 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2023-02-17 00:24:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:37,997 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2023-02-17 00:24:37,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2023-02-17 00:24:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:24:37,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:37,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:37,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 00:24:37,998 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2023-02-17 00:24:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261528335] [2023-02-17 00:24:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:37,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:38,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261528335] [2023-02-17 00:24:38,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261528335] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:38,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:38,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327297199] [2023-02-17 00:24:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,026 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:38,050 INFO L93 Difference]: Finished difference Result 1977 states and 2485 transitions. [2023-02-17 00:24:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 00:24:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:38,054 INFO L225 Difference]: With dead ends: 1977 [2023-02-17 00:24:38,054 INFO L226 Difference]: Without dead ends: 1351 [2023-02-17 00:24:38,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,055 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:38,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-02-17 00:24:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2023-02-17 00:24:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.236646884272997) internal successors, (1667), 1348 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2023-02-17 00:24:38,082 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2023-02-17 00:24:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:38,083 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2023-02-17 00:24:38,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2023-02-17 00:24:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:24:38,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:38,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:38,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 00:24:38,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2023-02-17 00:24:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:38,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116884228] [2023-02-17 00:24:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116884228] [2023-02-17 00:24:38,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116884228] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:38,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:38,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466101690] [2023-02-17 00:24:38,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,105 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:38,151 INFO L93 Difference]: Finished difference Result 2183 states and 2660 transitions. [2023-02-17 00:24:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:38,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 00:24:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:38,157 INFO L225 Difference]: With dead ends: 2183 [2023-02-17 00:24:38,157 INFO L226 Difference]: Without dead ends: 2181 [2023-02-17 00:24:38,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,158 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:38,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-02-17 00:24:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2023-02-17 00:24:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.2022417153996101) internal successors, (2467), 2052 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2023-02-17 00:24:38,198 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2023-02-17 00:24:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:38,199 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2023-02-17 00:24:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2023-02-17 00:24:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:24:38,201 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:24:38,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:38,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-17 00:24:38,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:24:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:24:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2023-02-17 00:24:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:24:38,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078101774] [2023-02-17 00:24:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:24:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:24:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:24:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:24:38,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078101774] [2023-02-17 00:24:38,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078101774] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:24:38,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:24:38,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:24:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202573348] [2023-02-17 00:24:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:24:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:24:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:24:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:24:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,220 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:24:38,269 INFO L93 Difference]: Finished difference Result 4549 states and 5347 transitions. [2023-02-17 00:24:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:24:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 00:24:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:24:38,271 INFO L225 Difference]: With dead ends: 4549 [2023-02-17 00:24:38,271 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 00:24:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:24:38,277 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:24:38,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:24:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 00:24:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 00:24:38,278 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) [2023-02-17 00:24:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 00:24:38,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-02-17 00:24:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:24:38,279 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 00:24:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:24:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 00:24:38,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 00:24:38,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 00:24:38,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-17 00:24:38,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 00:24:38,288 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 123) the Hoare annotation is: true [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point L94(line 94) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,289 INFO L902 garLoopResultBuilder]: At program point L119(lines 7 123) the Hoare annotation is: true [2023-02-17 00:24:38,289 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 55) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L53-2(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2023-02-17 00:24:38,290 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,291 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,291 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,291 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 00:24:38,291 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2023-02-17 00:24:38,292 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 123) the Hoare annotation is: false [2023-02-17 00:24:38,292 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2023-02-17 00:24:38,293 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2023-02-17 00:24:38,295 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:24:38,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 00:24:38,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 12:24:38 BoogieIcfgContainer [2023-02-17 00:24:38,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 00:24:38,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 00:24:38,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 00:24:38,306 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 00:24:38,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:24:36" (3/4) ... [2023-02-17 00:24:38,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 00:24:38,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-17 00:24:38,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 00:24:38,318 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 00:24:38,318 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 00:24:38,351 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 00:24:38,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 00:24:38,352 INFO L158 Benchmark]: Toolchain (without parser) took 2249.38ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 108.0MB in the beginning and 90.4MB in the end (delta: 17.6MB). Peak memory consumption was 85.7MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,352 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:24:38,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.20ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 97.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.97ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 95.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:24:38,353 INFO L158 Benchmark]: Boogie Preprocessor took 13.01ms. Allocated memory is still 146.8MB. Free memory was 95.8MB in the beginning and 94.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,354 INFO L158 Benchmark]: RCFGBuilder took 313.28ms. Allocated memory is still 146.8MB. Free memory was 94.1MB in the beginning and 82.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,354 INFO L158 Benchmark]: TraceAbstraction took 1685.85ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 82.0MB in the beginning and 93.6MB in the end (delta: -11.6MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,354 INFO L158 Benchmark]: Witness Printer took 45.20ms. Allocated memory is still 211.8MB. Free memory was 93.6MB in the beginning and 90.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 00:24:38,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.20ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 97.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.97ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 95.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.01ms. Allocated memory is still 146.8MB. Free memory was 95.8MB in the beginning and 94.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.28ms. Allocated memory is still 146.8MB. Free memory was 94.1MB in the beginning and 82.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1685.85ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 82.0MB in the beginning and 93.6MB in the end (delta: -11.6MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Witness Printer took 45.20ms. Allocated memory is still 211.8MB. Free memory was 93.6MB in the beginning and 90.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 121]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 1857 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1128 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=18, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 137 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 00:24:38,381 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