./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 35987657 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-?-3598765 [2022-07-20 22:32:43,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:32:43,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:32:43,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:32:43,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:32:43,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:32:43,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:32:43,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:32:43,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:32:43,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:32:43,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:32:43,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:32:43,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:32:43,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:32:43,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:32:43,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:32:43,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:32:43,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:32:43,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:32:43,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:32:43,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:32:43,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:32:43,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:32:43,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:32:43,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:32:43,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:32:43,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:32:43,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:32:43,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:32:43,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:32:43,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:32:43,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:32:43,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:32:43,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:32:43,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:32:43,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:32:43,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:32:43,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:32:43,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:32:43,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:32:43,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:32:43,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:32:43,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:32:43,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:32:43,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:32:43,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:32:43,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:32:43,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:32:43,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:32:43,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:32:43,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:32:43,139 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:32:43,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:32:43,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:32:43,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:32:43,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:32:43,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:32:43,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:32:43,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:32:43,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:32:43,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:32:43,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:32:43,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:32:43,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:32:43,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:32:43,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:32:43,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:32:43,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:32:43,143 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:32:43,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:32:43,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:32:43,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2022-07-20 22:32:43,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:32:43,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:32:43,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:32:43,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:32:43,402 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:32:43,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2022-07-20 22:32:43,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5612e3772/4a9bfab6f13f4f458ea26084d451cd07/FLAG8f299e8cb [2022-07-20 22:32:43,786 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:32:43,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2022-07-20 22:32:43,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5612e3772/4a9bfab6f13f4f458ea26084d451cd07/FLAG8f299e8cb [2022-07-20 22:32:44,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5612e3772/4a9bfab6f13f4f458ea26084d451cd07 [2022-07-20 22:32:44,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:32:44,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:32:44,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:32:44,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:32:44,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:32:44,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0c426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44, skipping insertion in model container [2022-07-20 22:32:44,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:32:44,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:32:44,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-07-20 22:32:44,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:32:44,333 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:32:44,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-07-20 22:32:44,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:32:44,386 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:32:44,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44 WrapperNode [2022-07-20 22:32:44,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:32:44,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:32:44,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:32:44,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:32:44,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,415 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2022-07-20 22:32:44,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:32:44,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:32:44,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:32:44,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:32:44,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:32:44,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:32:44,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:32:44,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:32:44,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (1/1) ... [2022-07-20 22:32:44,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:32:44,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:32:44,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 22:32:44,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 22:32:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:32:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:32:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:32:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:32:44,531 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:32:44,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:32:44,684 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:32:44,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:32:44,688 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:32:44,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:32:44 BoogieIcfgContainer [2022-07-20 22:32:44,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:32:44,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:32:44,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:32:44,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:32:44,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:32:44" (1/3) ... [2022-07-20 22:32:44,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cefcc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:32:44, skipping insertion in model container [2022-07-20 22:32:44,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:44" (2/3) ... [2022-07-20 22:32:44,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cefcc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:32:44, skipping insertion in model container [2022-07-20 22:32:44,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:32:44" (3/3) ... [2022-07-20 22:32:44,695 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2022-07-20 22:32:44,711 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:32:44,711 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:32:44,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:32:44,790 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b7c0a79, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65c8f0b5 [2022-07-20 22:32:44,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:32:44,804 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) [2022-07-20 22:32:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 22:32:44,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:44,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:44,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2022-07-20 22:32:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:44,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676542048] [2022-07-20 22:32:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:44,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676542048] [2022-07-20 22:32:44,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676542048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:44,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:44,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572826920] [2022-07-20 22:32:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,003 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) [2022-07-20 22:32:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,040 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2022-07-20 22:32:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,043 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 [2022-07-20 22:32:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,049 INFO L225 Difference]: With dead ends: 65 [2022-07-20 22:32:45,049 INFO L226 Difference]: Without dead ends: 51 [2022-07-20 22:32:45,052 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 [2022-07-20 22:32:45,056 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 [2022-07-20 22:32:45,057 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] [2022-07-20 22:32:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-20 22:32:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2022-07-20 22:32:45,089 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) [2022-07-20 22:32:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2022-07-20 22:32:45,091 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2022-07-20 22:32:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,091 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2022-07-20 22:32:45,091 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) [2022-07-20 22:32:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2022-07-20 22:32:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 22:32:45,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:32:45,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2022-07-20 22:32:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620197188] [2022-07-20 22:32:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620197188] [2022-07-20 22:32:45,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620197188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337140540] [2022-07-20 22:32:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,137 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) [2022-07-20 22:32:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,160 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2022-07-20 22:32:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,161 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 [2022-07-20 22:32:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,162 INFO L225 Difference]: With dead ends: 84 [2022-07-20 22:32:45,163 INFO L226 Difference]: Without dead ends: 51 [2022-07-20 22:32:45,164 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 [2022-07-20 22:32:45,165 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 [2022-07-20 22:32:45,166 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] [2022-07-20 22:32:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-20 22:32:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-07-20 22:32:45,173 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) [2022-07-20 22:32:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2022-07-20 22:32:45,176 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2022-07-20 22:32:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,176 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2022-07-20 22:32:45,177 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) [2022-07-20 22:32:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2022-07-20 22:32:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 22:32:45,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:32:45,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2022-07-20 22:32:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867840084] [2022-07-20 22:32:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867840084] [2022-07-20 22:32:45,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867840084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012610326] [2022-07-20 22:32:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,229 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) [2022-07-20 22:32:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,241 INFO L93 Difference]: Finished difference Result 78 states and 132 transitions. [2022-07-20 22:32:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,242 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 [2022-07-20 22:32:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,243 INFO L225 Difference]: With dead ends: 78 [2022-07-20 22:32:45,243 INFO L226 Difference]: Without dead ends: 54 [2022-07-20 22:32:45,244 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 [2022-07-20 22:32:45,245 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 [2022-07-20 22:32:45,247 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] [2022-07-20 22:32:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-20 22:32:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-07-20 22:32:45,253 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) [2022-07-20 22:32:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2022-07-20 22:32:45,254 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2022-07-20 22:32:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,254 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2022-07-20 22:32:45,255 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) [2022-07-20 22:32:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2022-07-20 22:32:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 22:32:45,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:32:45,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2022-07-20 22:32:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455927721] [2022-07-20 22:32:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455927721] [2022-07-20 22:32:45,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455927721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537344440] [2022-07-20 22:32:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,296 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) [2022-07-20 22:32:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,321 INFO L93 Difference]: Finished difference Result 97 states and 165 transitions. [2022-07-20 22:32:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,322 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 [2022-07-20 22:32:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,323 INFO L225 Difference]: With dead ends: 97 [2022-07-20 22:32:45,325 INFO L226 Difference]: Without dead ends: 95 [2022-07-20 22:32:45,326 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 [2022-07-20 22:32:45,329 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 [2022-07-20 22:32:45,329 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] [2022-07-20 22:32:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-20 22:32:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2022-07-20 22:32:45,336 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) [2022-07-20 22:32:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2022-07-20 22:32:45,338 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2022-07-20 22:32:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,338 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2022-07-20 22:32:45,338 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) [2022-07-20 22:32:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2022-07-20 22:32:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 22:32:45,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:32:45,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2022-07-20 22:32:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171458137] [2022-07-20 22:32:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171458137] [2022-07-20 22:32:45,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171458137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847317366] [2022-07-20 22:32:45,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,365 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) [2022-07-20 22:32:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,380 INFO L93 Difference]: Finished difference Result 161 states and 275 transitions. [2022-07-20 22:32:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,380 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 [2022-07-20 22:32:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,381 INFO L225 Difference]: With dead ends: 161 [2022-07-20 22:32:45,381 INFO L226 Difference]: Without dead ends: 97 [2022-07-20 22:32:45,382 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 [2022-07-20 22:32:45,382 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 [2022-07-20 22:32:45,383 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] [2022-07-20 22:32:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-20 22:32:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2022-07-20 22:32:45,387 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) [2022-07-20 22:32:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2022-07-20 22:32:45,388 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2022-07-20 22:32:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,388 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2022-07-20 22:32:45,388 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) [2022-07-20 22:32:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2022-07-20 22:32:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 22:32:45,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:32:45,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2022-07-20 22:32:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013896856] [2022-07-20 22:32:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013896856] [2022-07-20 22:32:45,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013896856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553158324] [2022-07-20 22:32:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,423 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) [2022-07-20 22:32:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,441 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2022-07-20 22:32:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,442 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 [2022-07-20 22:32:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,442 INFO L225 Difference]: With dead ends: 144 [2022-07-20 22:32:45,443 INFO L226 Difference]: Without dead ends: 99 [2022-07-20 22:32:45,444 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 [2022-07-20 22:32:45,445 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 [2022-07-20 22:32:45,445 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] [2022-07-20 22:32:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-20 22:32:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2022-07-20 22:32:45,450 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) [2022-07-20 22:32:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2022-07-20 22:32:45,450 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2022-07-20 22:32:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,450 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2022-07-20 22:32:45,450 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) [2022-07-20 22:32:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2022-07-20 22:32:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 22:32:45,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:32:45,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2022-07-20 22:32:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530400298] [2022-07-20 22:32:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530400298] [2022-07-20 22:32:45,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530400298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199114709] [2022-07-20 22:32:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,490 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) [2022-07-20 22:32:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,504 INFO L93 Difference]: Finished difference Result 273 states and 449 transitions. [2022-07-20 22:32:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,505 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 [2022-07-20 22:32:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,506 INFO L225 Difference]: With dead ends: 273 [2022-07-20 22:32:45,507 INFO L226 Difference]: Without dead ends: 183 [2022-07-20 22:32:45,507 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 [2022-07-20 22:32:45,510 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 [2022-07-20 22:32:45,511 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] [2022-07-20 22:32:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-20 22:32:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-07-20 22:32:45,525 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) [2022-07-20 22:32:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2022-07-20 22:32:45,528 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2022-07-20 22:32:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,528 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2022-07-20 22:32:45,528 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) [2022-07-20 22:32:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2022-07-20 22:32:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 22:32:45,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:32:45,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2022-07-20 22:32:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302540530] [2022-07-20 22:32:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302540530] [2022-07-20 22:32:45,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302540530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804658329] [2022-07-20 22:32:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,552 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) [2022-07-20 22:32:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,563 INFO L93 Difference]: Finished difference Result 225 states and 365 transitions. [2022-07-20 22:32:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,567 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 [2022-07-20 22:32:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,568 INFO L225 Difference]: With dead ends: 225 [2022-07-20 22:32:45,568 INFO L226 Difference]: Without dead ends: 223 [2022-07-20 22:32:45,569 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 [2022-07-20 22:32:45,569 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 [2022-07-20 22:32:45,570 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] [2022-07-20 22:32:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-20 22:32:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2022-07-20 22:32:45,583 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) [2022-07-20 22:32:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2022-07-20 22:32:45,587 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2022-07-20 22:32:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,588 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2022-07-20 22:32:45,588 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) [2022-07-20 22:32:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2022-07-20 22:32:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 22:32:45,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:32:45,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2022-07-20 22:32:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927481690] [2022-07-20 22:32:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927481690] [2022-07-20 22:32:45,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927481690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999248084] [2022-07-20 22:32:45,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,628 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) [2022-07-20 22:32:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,639 INFO L93 Difference]: Finished difference Result 325 states and 521 transitions. [2022-07-20 22:32:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,640 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 [2022-07-20 22:32:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,641 INFO L225 Difference]: With dead ends: 325 [2022-07-20 22:32:45,641 INFO L226 Difference]: Without dead ends: 323 [2022-07-20 22:32:45,641 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 [2022-07-20 22:32:45,642 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 [2022-07-20 22:32:45,643 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] [2022-07-20 22:32:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-20 22:32:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2022-07-20 22:32:45,651 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) [2022-07-20 22:32:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2022-07-20 22:32:45,651 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2022-07-20 22:32:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,652 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2022-07-20 22:32:45,652 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) [2022-07-20 22:32:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2022-07-20 22:32:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 22:32:45,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:32:45,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2022-07-20 22:32:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579508034] [2022-07-20 22:32:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579508034] [2022-07-20 22:32:45,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579508034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522284586] [2022-07-20 22:32:45,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,677 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) [2022-07-20 22:32:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,686 INFO L93 Difference]: Finished difference Result 597 states and 929 transitions. [2022-07-20 22:32:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,687 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 [2022-07-20 22:32:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,688 INFO L225 Difference]: With dead ends: 597 [2022-07-20 22:32:45,688 INFO L226 Difference]: Without dead ends: 347 [2022-07-20 22:32:45,689 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 [2022-07-20 22:32:45,689 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 [2022-07-20 22:32:45,690 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] [2022-07-20 22:32:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-20 22:32:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-07-20 22:32:45,697 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) [2022-07-20 22:32:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2022-07-20 22:32:45,698 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2022-07-20 22:32:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,698 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2022-07-20 22:32:45,698 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) [2022-07-20 22:32:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2022-07-20 22:32:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 22:32:45,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:32:45,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2022-07-20 22:32:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559955999] [2022-07-20 22:32:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559955999] [2022-07-20 22:32:45,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559955999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431949310] [2022-07-20 22:32:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,716 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) [2022-07-20 22:32:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,724 INFO L93 Difference]: Finished difference Result 525 states and 793 transitions. [2022-07-20 22:32:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,725 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 [2022-07-20 22:32:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,726 INFO L225 Difference]: With dead ends: 525 [2022-07-20 22:32:45,726 INFO L226 Difference]: Without dead ends: 359 [2022-07-20 22:32:45,726 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 [2022-07-20 22:32:45,727 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 [2022-07-20 22:32:45,727 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] [2022-07-20 22:32:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-20 22:32:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-07-20 22:32:45,735 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) [2022-07-20 22:32:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-07-20 22:32:45,736 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2022-07-20 22:32:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-07-20 22:32:45,737 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) [2022-07-20 22:32:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-07-20 22:32:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 22:32:45,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:32:45,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2022-07-20 22:32:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678343775] [2022-07-20 22:32:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678343775] [2022-07-20 22:32:45,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678343775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339122723] [2022-07-20 22:32:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,791 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) [2022-07-20 22:32:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,805 INFO L93 Difference]: Finished difference Result 617 states and 925 transitions. [2022-07-20 22:32:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,808 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 [2022-07-20 22:32:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,809 INFO L225 Difference]: With dead ends: 617 [2022-07-20 22:32:45,810 INFO L226 Difference]: Without dead ends: 615 [2022-07-20 22:32:45,810 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 [2022-07-20 22:32:45,810 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 [2022-07-20 22:32:45,810 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] [2022-07-20 22:32:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-20 22:32:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2022-07-20 22:32:45,819 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) [2022-07-20 22:32:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2022-07-20 22:32:45,821 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2022-07-20 22:32:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,821 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2022-07-20 22:32:45,821 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) [2022-07-20 22:32:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2022-07-20 22:32:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 22:32:45,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:32:45,822 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2022-07-20 22:32:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922705157] [2022-07-20 22:32:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922705157] [2022-07-20 22:32:45,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922705157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858087640] [2022-07-20 22:32:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,860 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) [2022-07-20 22:32:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,874 INFO L93 Difference]: Finished difference Result 1177 states and 1693 transitions. [2022-07-20 22:32:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,875 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 [2022-07-20 22:32:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,877 INFO L225 Difference]: With dead ends: 1177 [2022-07-20 22:32:45,877 INFO L226 Difference]: Without dead ends: 679 [2022-07-20 22:32:45,877 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 [2022-07-20 22:32:45,878 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 [2022-07-20 22:32:45,879 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] [2022-07-20 22:32:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-20 22:32:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2022-07-20 22:32:45,891 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) [2022-07-20 22:32:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2022-07-20 22:32:45,893 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2022-07-20 22:32:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2022-07-20 22:32:45,894 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) [2022-07-20 22:32:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2022-07-20 22:32:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-20 22:32:45,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:32:45,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2022-07-20 22:32:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617411009] [2022-07-20 22:32:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617411009] [2022-07-20 22:32:45,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617411009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95975115] [2022-07-20 22:32:45,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,914 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) [2022-07-20 22:32:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,926 INFO L93 Difference]: Finished difference Result 1017 states and 1413 transitions. [2022-07-20 22:32:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,926 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 [2022-07-20 22:32:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,928 INFO L225 Difference]: With dead ends: 1017 [2022-07-20 22:32:45,928 INFO L226 Difference]: Without dead ends: 695 [2022-07-20 22:32:45,929 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 [2022-07-20 22:32:45,929 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 [2022-07-20 22:32:45,929 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] [2022-07-20 22:32:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-07-20 22:32:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2022-07-20 22:32:45,947 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) [2022-07-20 22:32:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2022-07-20 22:32:45,949 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2022-07-20 22:32:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2022-07-20 22:32:45,949 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) [2022-07-20 22:32:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2022-07-20 22:32:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-20 22:32:45,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:45,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:32:45,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2022-07-20 22:32:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:45,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282795034] [2022-07-20 22:32:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:45,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282795034] [2022-07-20 22:32:45,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282795034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:45,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:45,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416630032] [2022-07-20 22:32:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:45,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:45,964 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) [2022-07-20 22:32:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,978 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2022-07-20 22:32:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,979 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 [2022-07-20 22:32:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,981 INFO L225 Difference]: With dead ends: 1161 [2022-07-20 22:32:45,982 INFO L226 Difference]: Without dead ends: 1159 [2022-07-20 22:32:45,982 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 [2022-07-20 22:32:45,982 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 [2022-07-20 22:32:45,983 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] [2022-07-20 22:32:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-07-20 22:32:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2022-07-20 22:32:45,999 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) [2022-07-20 22:32:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2022-07-20 22:32:46,001 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2022-07-20 22:32:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,001 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2022-07-20 22:32:46,002 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) [2022-07-20 22:32:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2022-07-20 22:32:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-20 22:32:46,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:46,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:32:46,003 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2022-07-20 22:32:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:46,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194944227] [2022-07-20 22:32:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:46,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:46,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194944227] [2022-07-20 22:32:46,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194944227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:46,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:46,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66781275] [2022-07-20 22:32:46,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:46,016 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) [2022-07-20 22:32:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:46,044 INFO L93 Difference]: Finished difference Result 2313 states and 3029 transitions. [2022-07-20 22:32:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:46,045 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 [2022-07-20 22:32:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:46,048 INFO L225 Difference]: With dead ends: 2313 [2022-07-20 22:32:46,048 INFO L226 Difference]: Without dead ends: 1319 [2022-07-20 22:32:46,049 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 [2022-07-20 22:32:46,050 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 [2022-07-20 22:32:46,050 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] [2022-07-20 22:32:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-07-20 22:32:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2022-07-20 22:32:46,075 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) [2022-07-20 22:32:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2022-07-20 22:32:46,078 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2022-07-20 22:32:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2022-07-20 22:32:46,078 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) [2022-07-20 22:32:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2022-07-20 22:32:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 22:32:46,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:46,079 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] [2022-07-20 22:32:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:32:46,080 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2022-07-20 22:32:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281006584] [2022-07-20 22:32:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281006584] [2022-07-20 22:32:46,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281006584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:46,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:46,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517745960] [2022-07-20 22:32:46,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:46,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:46,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:46,107 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) [2022-07-20 22:32:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:46,127 INFO L93 Difference]: Finished difference Result 1977 states and 2485 transitions. [2022-07-20 22:32:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:46,127 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 [2022-07-20 22:32:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:46,131 INFO L225 Difference]: With dead ends: 1977 [2022-07-20 22:32:46,131 INFO L226 Difference]: Without dead ends: 1351 [2022-07-20 22:32:46,132 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 [2022-07-20 22:32:46,132 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 [2022-07-20 22:32:46,132 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] [2022-07-20 22:32:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-07-20 22:32:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2022-07-20 22:32:46,160 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) [2022-07-20 22:32:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2022-07-20 22:32:46,163 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2022-07-20 22:32:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,163 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2022-07-20 22:32:46,163 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) [2022-07-20 22:32:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2022-07-20 22:32:46,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 22:32:46,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:46,164 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] [2022-07-20 22:32:46,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:32:46,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:46,165 INFO L85 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2022-07-20 22:32:46,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:46,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276548618] [2022-07-20 22:32:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:46,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:46,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:46,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276548618] [2022-07-20 22:32:46,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276548618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:46,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:46,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28701205] [2022-07-20 22:32:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:46,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:46,175 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) [2022-07-20 22:32:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:46,201 INFO L93 Difference]: Finished difference Result 2183 states and 2660 transitions. [2022-07-20 22:32:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:46,202 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 [2022-07-20 22:32:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:46,207 INFO L225 Difference]: With dead ends: 2183 [2022-07-20 22:32:46,207 INFO L226 Difference]: Without dead ends: 2181 [2022-07-20 22:32:46,207 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 [2022-07-20 22:32:46,208 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 [2022-07-20 22:32:46,208 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] [2022-07-20 22:32:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2022-07-20 22:32:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2022-07-20 22:32:46,244 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) [2022-07-20 22:32:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2022-07-20 22:32:46,248 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2022-07-20 22:32:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2022-07-20 22:32:46,248 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) [2022-07-20 22:32:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2022-07-20 22:32:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 22:32:46,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:46,250 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] [2022-07-20 22:32:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:32:46,250 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2022-07-20 22:32:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655513063] [2022-07-20 22:32:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:46,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:46,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655513063] [2022-07-20 22:32:46,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655513063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:46,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:46,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135331200] [2022-07-20 22:32:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:46,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:46,262 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) [2022-07-20 22:32:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:46,297 INFO L93 Difference]: Finished difference Result 4549 states and 5347 transitions. [2022-07-20 22:32:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:46,297 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 [2022-07-20 22:32:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:46,297 INFO L225 Difference]: With dead ends: 4549 [2022-07-20 22:32:46,297 INFO L226 Difference]: Without dead ends: 0 [2022-07-20 22:32:46,300 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 [2022-07-20 22:32:46,300 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 [2022-07-20 22:32:46,300 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] [2022-07-20 22:32:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-20 22:32:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-20 22:32:46,301 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) [2022-07-20 22:32:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-20 22:32:46,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-07-20 22:32:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,301 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-20 22:32:46,301 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) [2022-07-20 22:32:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-20 22:32:46,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-20 22:32:46,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 22:32:46,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:32:46,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L94(line 94) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L902 garLoopResultBuilder]: At program point L119(lines 7 123) the Hoare annotation is: true [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 55) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L53-2(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2022-07-20 22:32:46,312 INFO L902 garLoopResultBuilder]: At program point L122(lines 6 123) the Hoare annotation is: true [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L895 garLoopResultBuilder]: At program point L114-1(lines 7 123) the Hoare annotation is: false [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,312 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2022-07-20 22:32:46,313 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2022-07-20 22:32:46,315 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:46,316 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 22:32:46,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:32:46 BoogieIcfgContainer [2022-07-20 22:32:46,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 22:32:46,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 22:32:46,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 22:32:46,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 22:32:46,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:32:44" (3/4) ... [2022-07-20 22:32:46,324 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-20 22:32:46,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-20 22:32:46,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-20 22:32:46,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-20 22:32:46,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-20 22:32:46,353 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 22:32:46,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 22:32:46,354 INFO L158 Benchmark]: Toolchain (without parser) took 2132.23ms. Allocated memory was 58.7MB in the beginning and 104.9MB in the end (delta: 46.1MB). Free memory was 37.3MB in the beginning and 46.9MB in the end (delta: -9.6MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,354 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 22:32:46,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.14ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.9MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.03ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 22:32:46,354 INFO L158 Benchmark]: Boogie Preprocessor took 19.88ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,355 INFO L158 Benchmark]: RCFGBuilder took 252.26ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 27.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,355 INFO L158 Benchmark]: TraceAbstraction took 1631.23ms. Allocated memory was 58.7MB in the beginning and 104.9MB in the end (delta: 46.1MB). Free memory was 27.4MB in the beginning and 50.0MB in the end (delta: -22.6MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,355 INFO L158 Benchmark]: Witness Printer took 31.19ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 46.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 22:32:46,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.14ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.9MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.03ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.88ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.26ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 27.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1631.23ms. Allocated memory was 58.7MB in the beginning and 104.9MB in the end (delta: 46.1MB). Free memory was 27.4MB in the beginning and 50.0MB in the end (delta: -22.6MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 31.19ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 46.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 0.5s, 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, 0.3s 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! [2022-07-20 22:32:46,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE