./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_9.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 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 22:35:41,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:35:41,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:35:41,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:35:41,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:35:41,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:35:41,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:35:41,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:35:41,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:35:41,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:35:41,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:35:41,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:35:41,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:35:41,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:35:41,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:35:41,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:35:41,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:35:41,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:35:41,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:35:41,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:35:41,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:35:41,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:35:41,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:35:41,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:35:41,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:35:41,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:35:41,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:35:41,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:35:41,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:35:41,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:35:41,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:35:41,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:35:41,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:35:41,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:35:41,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:35:41,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:35:41,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:35:41,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:35:41,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:35:41,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:35:41,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:35:41,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:35:41,882 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:35:41,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:35:41,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:35:41,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:35:41,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:35:41,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:35:41,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:35:41,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:35:41,885 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:35:41,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:35:41,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:35:41,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:35:41,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:35:41,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:35:41,888 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:35:41,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:35:41,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:35:41,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:35:41,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:35:41,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:35:41,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:35:41,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:35:41,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:35:41,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:35:41,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:35:41,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:35:41,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:35:41,890 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:35:41,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:35:41,890 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:35:41,890 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 [2023-02-14 22:35:42,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:35:42,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:35:42,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:35:42,095 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:35:42,096 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:35:42,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_9.c [2023-02-14 22:35:43,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:35:43,185 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:35:43,186 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c [2023-02-14 22:35:43,191 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173d2a492/d7b7c1a117ae4ccfa20d9d24ee531d90/FLAG1db0dd050 [2023-02-14 22:35:43,200 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173d2a492/d7b7c1a117ae4ccfa20d9d24ee531d90 [2023-02-14 22:35:43,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:35:43,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:35:43,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:35:43,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:35:43,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:35:43,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e985f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43, skipping insertion in model container [2023-02-14 22:35:43,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:35:43,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:35:43,334 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2023-02-14 22:35:43,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:35:43,348 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:35:43,371 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2023-02-14 22:35:43,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:35:43,380 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:35:43,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43 WrapperNode [2023-02-14 22:35:43,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:35:43,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:35:43,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:35:43,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:35:43,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,400 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 127 [2023-02-14 22:35:43,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:35:43,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:35:43,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:35:43,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:35:43,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:35:43,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:35:43,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:35:43,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:35:43,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (1/1) ... [2023-02-14 22:35:43,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:35:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:35:43,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 22:35:43,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 22:35:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:35:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:35:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:35:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:35:43,518 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:35:43,520 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:35:43,675 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:35:43,680 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:35:43,680 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 22:35:43,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:35:43 BoogieIcfgContainer [2023-02-14 22:35:43,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:35:43,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:35:43,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:35:43,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:35:43,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:35:43" (1/3) ... [2023-02-14 22:35:43,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362de4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:35:43, skipping insertion in model container [2023-02-14 22:35:43,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:43" (2/3) ... [2023-02-14 22:35:43,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362de4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:35:43, skipping insertion in model container [2023-02-14 22:35:43,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:35:43" (3/3) ... [2023-02-14 22:35:43,686 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2023-02-14 22:35:43,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:35:43,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 22:35:43,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:35:43,730 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@245786a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:35:43,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 22:35:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 22:35:43,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:43,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:43,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1657621241, now seen corresponding path program 1 times [2023-02-14 22:35:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:43,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331410923] [2023-02-14 22:35:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331410923] [2023-02-14 22:35:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331410923] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:43,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:43,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122661252] [2023-02-14 22:35:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:43,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:43,968 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,033 INFO L93 Difference]: Finished difference Result 77 states and 133 transitions. [2023-02-14 22:35:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 22:35:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,041 INFO L225 Difference]: With dead ends: 77 [2023-02-14 22:35:44,046 INFO L226 Difference]: Without dead ends: 63 [2023-02-14 22:35:44,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,051 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 127 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-14 22:35:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2023-02-14 22:35:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2023-02-14 22:35:44,086 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2023-02-14 22:35:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,086 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2023-02-14 22:35:44,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2023-02-14 22:35:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 22:35:44,088 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:35:44,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1399455803, now seen corresponding path program 1 times [2023-02-14 22:35:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585586275] [2023-02-14 22:35:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585586275] [2023-02-14 22:35:44,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585586275] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465870923] [2023-02-14 22:35:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,181 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,207 INFO L93 Difference]: Finished difference Result 104 states and 189 transitions. [2023-02-14 22:35:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 22:35:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,211 INFO L225 Difference]: With dead ends: 104 [2023-02-14 22:35:44,211 INFO L226 Difference]: Without dead ends: 63 [2023-02-14 22:35:44,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,236 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 43 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-14 22:35:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2023-02-14 22:35:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.8333333333333333) internal successors, (110), 60 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 110 transitions. [2023-02-14 22:35:44,247 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 110 transitions. Word has length 16 [2023-02-14 22:35:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,247 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 110 transitions. [2023-02-14 22:35:44,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,248 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 110 transitions. [2023-02-14 22:35:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 22:35:44,249 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 22:35:44,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,253 INFO L85 PathProgramCache]: Analyzing trace with hash 153562753, now seen corresponding path program 1 times [2023-02-14 22:35:44,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275918451] [2023-02-14 22:35:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275918451] [2023-02-14 22:35:44,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275918451] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098676466] [2023-02-14 22:35:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,339 INFO L87 Difference]: Start difference. First operand 61 states and 110 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,359 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2023-02-14 22:35:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-14 22:35:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,360 INFO L225 Difference]: With dead ends: 96 [2023-02-14 22:35:44,362 INFO L226 Difference]: Without dead ends: 66 [2023-02-14 22:35:44,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,363 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 45 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-14 22:35:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-02-14 22:35:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 112 transitions. [2023-02-14 22:35:44,371 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 112 transitions. Word has length 17 [2023-02-14 22:35:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,372 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 112 transitions. [2023-02-14 22:35:44,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 112 transitions. [2023-02-14 22:35:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 22:35:44,373 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 22:35:44,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,374 INFO L85 PathProgramCache]: Analyzing trace with hash -433243261, now seen corresponding path program 1 times [2023-02-14 22:35:44,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418017399] [2023-02-14 22:35:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418017399] [2023-02-14 22:35:44,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418017399] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456413962] [2023-02-14 22:35:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,438 INFO L87 Difference]: Start difference. First operand 64 states and 112 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,461 INFO L93 Difference]: Finished difference Result 121 states and 213 transitions. [2023-02-14 22:35:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-14 22:35:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,463 INFO L225 Difference]: With dead ends: 121 [2023-02-14 22:35:44,465 INFO L226 Difference]: Without dead ends: 119 [2023-02-14 22:35:44,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,466 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 40 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 113 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-14 22:35:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2023-02-14 22:35:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.7738095238095237) internal successors, (149), 84 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 149 transitions. [2023-02-14 22:35:44,477 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 149 transitions. Word has length 17 [2023-02-14 22:35:44,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,478 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 149 transitions. [2023-02-14 22:35:44,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 149 transitions. [2023-02-14 22:35:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 22:35:44,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 22:35:44,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -175077823, now seen corresponding path program 1 times [2023-02-14 22:35:44,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876107836] [2023-02-14 22:35:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876107836] [2023-02-14 22:35:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876107836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688492731] [2023-02-14 22:35:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,538 INFO L87 Difference]: Start difference. First operand 85 states and 149 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,552 INFO L93 Difference]: Finished difference Result 201 states and 355 transitions. [2023-02-14 22:35:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-14 22:35:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,553 INFO L225 Difference]: With dead ends: 201 [2023-02-14 22:35:44,553 INFO L226 Difference]: Without dead ends: 121 [2023-02-14 22:35:44,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,554 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 130 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-14 22:35:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-02-14 22:35:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.7542372881355932) internal successors, (207), 118 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 207 transitions. [2023-02-14 22:35:44,561 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 207 transitions. Word has length 17 [2023-02-14 22:35:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,561 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 207 transitions. [2023-02-14 22:35:44,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 207 transitions. [2023-02-14 22:35:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 22:35:44,562 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 22:35:44,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash -545425190, now seen corresponding path program 1 times [2023-02-14 22:35:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383901152] [2023-02-14 22:35:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383901152] [2023-02-14 22:35:44,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383901152] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381015966] [2023-02-14 22:35:44,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,608 INFO L87 Difference]: Start difference. First operand 119 states and 207 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,630 INFO L93 Difference]: Finished difference Result 180 states and 310 transitions. [2023-02-14 22:35:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 22:35:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,633 INFO L225 Difference]: With dead ends: 180 [2023-02-14 22:35:44,633 INFO L226 Difference]: Without dead ends: 123 [2023-02-14 22:35:44,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,634 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 44 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-14 22:35:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2023-02-14 22:35:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.725) internal successors, (207), 120 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 207 transitions. [2023-02-14 22:35:44,641 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 207 transitions. Word has length 18 [2023-02-14 22:35:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,642 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 207 transitions. [2023-02-14 22:35:44,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 207 transitions. [2023-02-14 22:35:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 22:35:44,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 22:35:44,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1132231204, now seen corresponding path program 1 times [2023-02-14 22:35:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603259083] [2023-02-14 22:35:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603259083] [2023-02-14 22:35:44,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603259083] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235487701] [2023-02-14 22:35:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,686 INFO L87 Difference]: Start difference. First operand 121 states and 207 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,705 INFO L93 Difference]: Finished difference Result 345 states and 593 transitions. [2023-02-14 22:35:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 22:35:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,707 INFO L225 Difference]: With dead ends: 345 [2023-02-14 22:35:44,710 INFO L226 Difference]: Without dead ends: 231 [2023-02-14 22:35:44,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,712 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 115 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-02-14 22:35:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2023-02-14 22:35:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6973684210526316) internal successors, (387), 228 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 387 transitions. [2023-02-14 22:35:44,733 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 387 transitions. Word has length 18 [2023-02-14 22:35:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,733 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 387 transitions. [2023-02-14 22:35:44,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 387 transitions. [2023-02-14 22:35:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 22:35:44,737 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 22:35:44,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1390396642, now seen corresponding path program 1 times [2023-02-14 22:35:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068846644] [2023-02-14 22:35:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068846644] [2023-02-14 22:35:44,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068846644] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732693669] [2023-02-14 22:35:44,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,762 INFO L87 Difference]: Start difference. First operand 229 states and 387 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,770 INFO L93 Difference]: Finished difference Result 289 states and 493 transitions. [2023-02-14 22:35:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 22:35:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,772 INFO L225 Difference]: With dead ends: 289 [2023-02-14 22:35:44,772 INFO L226 Difference]: Without dead ends: 287 [2023-02-14 22:35:44,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,773 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 152 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-02-14 22:35:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 229. [2023-02-14 22:35:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6798245614035088) internal successors, (383), 228 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 383 transitions. [2023-02-14 22:35:44,795 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 383 transitions. Word has length 18 [2023-02-14 22:35:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,795 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 383 transitions. [2023-02-14 22:35:44,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 383 transitions. [2023-02-14 22:35:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 22:35:44,797 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 22:35:44,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash -739214602, now seen corresponding path program 1 times [2023-02-14 22:35:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751955396] [2023-02-14 22:35:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751955396] [2023-02-14 22:35:44,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751955396] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088454884] [2023-02-14 22:35:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,818 INFO L87 Difference]: Start difference. First operand 229 states and 383 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,828 INFO L93 Difference]: Finished difference Result 421 states and 713 transitions. [2023-02-14 22:35:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-14 22:35:44,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,830 INFO L225 Difference]: With dead ends: 421 [2023-02-14 22:35:44,830 INFO L226 Difference]: Without dead ends: 419 [2023-02-14 22:35:44,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,833 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 34 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-02-14 22:35:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 321. [2023-02-14 22:35:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.646875) internal successors, (527), 320 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 527 transitions. [2023-02-14 22:35:44,845 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 527 transitions. Word has length 19 [2023-02-14 22:35:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,845 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 527 transitions. [2023-02-14 22:35:44,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 527 transitions. [2023-02-14 22:35:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 22:35:44,847 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 22:35:44,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,851 INFO L85 PathProgramCache]: Analyzing trace with hash -481049164, now seen corresponding path program 1 times [2023-02-14 22:35:44,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505829250] [2023-02-14 22:35:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505829250] [2023-02-14 22:35:44,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505829250] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226528844] [2023-02-14 22:35:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,883 INFO L87 Difference]: Start difference. First operand 321 states and 527 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,899 INFO L93 Difference]: Finished difference Result 757 states and 1249 transitions. [2023-02-14 22:35:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-14 22:35:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,901 INFO L225 Difference]: With dead ends: 757 [2023-02-14 22:35:44,901 INFO L226 Difference]: Without dead ends: 443 [2023-02-14 22:35:44,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,904 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 132 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-02-14 22:35:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2023-02-14 22:35:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.625) internal successors, (715), 440 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 715 transitions. [2023-02-14 22:35:44,915 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 715 transitions. Word has length 19 [2023-02-14 22:35:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,915 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 715 transitions. [2023-02-14 22:35:44,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 715 transitions. [2023-02-14 22:35:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 22:35:44,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-14 22:35:44,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1440601487, now seen corresponding path program 1 times [2023-02-14 22:35:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042072389] [2023-02-14 22:35:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:44,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042072389] [2023-02-14 22:35:44,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042072389] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:44,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:44,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:44,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956600393] [2023-02-14 22:35:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:44,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,964 INFO L87 Difference]: Start difference. First operand 441 states and 715 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:44,981 INFO L93 Difference]: Finished difference Result 669 states and 1081 transitions. [2023-02-14 22:35:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-14 22:35:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:44,982 INFO L225 Difference]: With dead ends: 669 [2023-02-14 22:35:44,982 INFO L226 Difference]: Without dead ends: 455 [2023-02-14 22:35:44,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:44,983 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:44,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 132 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-02-14 22:35:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 453. [2023-02-14 22:35:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.5995575221238938) internal successors, (723), 452 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 723 transitions. [2023-02-14 22:35:44,993 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 723 transitions. Word has length 20 [2023-02-14 22:35:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:44,993 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 723 transitions. [2023-02-14 22:35:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 723 transitions. [2023-02-14 22:35:44,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 22:35:44,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:44,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-14 22:35:44,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2027407501, now seen corresponding path program 1 times [2023-02-14 22:35:44,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:44,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674383860] [2023-02-14 22:35:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674383860] [2023-02-14 22:35:45,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674383860] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061117187] [2023-02-14 22:35:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,025 INFO L87 Difference]: Start difference. First operand 453 states and 723 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,040 INFO L93 Difference]: Finished difference Result 809 states and 1309 transitions. [2023-02-14 22:35:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-14 22:35:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,044 INFO L225 Difference]: With dead ends: 809 [2023-02-14 22:35:45,044 INFO L226 Difference]: Without dead ends: 807 [2023-02-14 22:35:45,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,045 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 107 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-02-14 22:35:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 645. [2023-02-14 22:35:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.5574534161490683) internal successors, (1003), 644 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1003 transitions. [2023-02-14 22:35:45,063 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1003 transitions. Word has length 20 [2023-02-14 22:35:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,063 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1003 transitions. [2023-02-14 22:35:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1003 transitions. [2023-02-14 22:35:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 22:35:45,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-14 22:35:45,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1769242063, now seen corresponding path program 1 times [2023-02-14 22:35:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032956623] [2023-02-14 22:35:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032956623] [2023-02-14 22:35:45,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032956623] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661936583] [2023-02-14 22:35:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,088 INFO L87 Difference]: Start difference. First operand 645 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,107 INFO L93 Difference]: Finished difference Result 1497 states and 2333 transitions. [2023-02-14 22:35:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-14 22:35:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,110 INFO L225 Difference]: With dead ends: 1497 [2023-02-14 22:35:45,110 INFO L226 Difference]: Without dead ends: 871 [2023-02-14 22:35:45,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,111 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 39 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 133 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-02-14 22:35:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2023-02-14 22:35:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.5334101382488479) internal successors, (1331), 868 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1331 transitions. [2023-02-14 22:35:45,131 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1331 transitions. Word has length 20 [2023-02-14 22:35:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,131 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1331 transitions. [2023-02-14 22:35:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1331 transitions. [2023-02-14 22:35:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:35:45,134 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,134 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, 1] [2023-02-14 22:35:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-14 22:35:45,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1575091945, now seen corresponding path program 1 times [2023-02-14 22:35:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287295831] [2023-02-14 22:35:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287295831] [2023-02-14 22:35:45,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287295831] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999653876] [2023-02-14 22:35:45,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,166 INFO L87 Difference]: Start difference. First operand 869 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,184 INFO L93 Difference]: Finished difference Result 1305 states and 1989 transitions. [2023-02-14 22:35:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 22:35:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,187 INFO L225 Difference]: With dead ends: 1305 [2023-02-14 22:35:45,187 INFO L226 Difference]: Without dead ends: 887 [2023-02-14 22:35:45,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,188 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-02-14 22:35:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2023-02-14 22:35:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.505656108597285) internal successors, (1331), 884 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1331 transitions. [2023-02-14 22:35:45,208 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1331 transitions. Word has length 21 [2023-02-14 22:35:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1331 transitions. [2023-02-14 22:35:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1331 transitions. [2023-02-14 22:35:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:35:45,210 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,210 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, 1] [2023-02-14 22:35:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-14 22:35:45,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash 988285931, now seen corresponding path program 1 times [2023-02-14 22:35:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091549822] [2023-02-14 22:35:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091549822] [2023-02-14 22:35:45,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091549822] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182238798] [2023-02-14 22:35:45,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,236 INFO L87 Difference]: Start difference. First operand 885 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,262 INFO L93 Difference]: Finished difference Result 1545 states and 2357 transitions. [2023-02-14 22:35:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 22:35:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,266 INFO L225 Difference]: With dead ends: 1545 [2023-02-14 22:35:45,266 INFO L226 Difference]: Without dead ends: 1543 [2023-02-14 22:35:45,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,268 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-02-14 22:35:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1285. [2023-02-14 22:35:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.4602803738317758) internal successors, (1875), 1284 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1875 transitions. [2023-02-14 22:35:45,289 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1875 transitions. Word has length 21 [2023-02-14 22:35:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,289 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1875 transitions. [2023-02-14 22:35:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1875 transitions. [2023-02-14 22:35:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:35:45,291 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,291 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, 1] [2023-02-14 22:35:45,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-14 22:35:45,291 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1246451369, now seen corresponding path program 1 times [2023-02-14 22:35:45,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996414282] [2023-02-14 22:35:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996414282] [2023-02-14 22:35:45,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996414282] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026995173] [2023-02-14 22:35:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,308 INFO L87 Difference]: Start difference. First operand 1285 states and 1875 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,343 INFO L93 Difference]: Finished difference Result 2953 states and 4309 transitions. [2023-02-14 22:35:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 22:35:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,347 INFO L225 Difference]: With dead ends: 2953 [2023-02-14 22:35:45,347 INFO L226 Difference]: Without dead ends: 1703 [2023-02-14 22:35:45,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,348 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2023-02-14 22:35:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2023-02-14 22:35:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.4323529411764706) internal successors, (2435), 1700 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2435 transitions. [2023-02-14 22:35:45,384 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2435 transitions. Word has length 21 [2023-02-14 22:35:45,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,385 INFO L495 AbstractCegarLoop]: Abstraction has 1701 states and 2435 transitions. [2023-02-14 22:35:45,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2435 transitions. [2023-02-14 22:35:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 22:35:45,386 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,387 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, 1, 1] [2023-02-14 22:35:45,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-14 22:35:45,387 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash 572308166, now seen corresponding path program 1 times [2023-02-14 22:35:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544039247] [2023-02-14 22:35:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544039247] [2023-02-14 22:35:45,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544039247] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468709213] [2023-02-14 22:35:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,409 INFO L87 Difference]: Start difference. First operand 1701 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,433 INFO L93 Difference]: Finished difference Result 2553 states and 3637 transitions. [2023-02-14 22:35:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-14 22:35:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,438 INFO L225 Difference]: With dead ends: 2553 [2023-02-14 22:35:45,438 INFO L226 Difference]: Without dead ends: 1735 [2023-02-14 22:35:45,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,440 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 40 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 124 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-02-14 22:35:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1733. [2023-02-14 22:35:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4058891454965359) internal successors, (2435), 1732 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2435 transitions. [2023-02-14 22:35:45,473 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2435 transitions. Word has length 22 [2023-02-14 22:35:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,473 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2435 transitions. [2023-02-14 22:35:45,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2435 transitions. [2023-02-14 22:35:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 22:35:45,474 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,474 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, 1, 1] [2023-02-14 22:35:45,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-14 22:35:45,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -14497848, now seen corresponding path program 1 times [2023-02-14 22:35:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653942213] [2023-02-14 22:35:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653942213] [2023-02-14 22:35:45,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653942213] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574220432] [2023-02-14 22:35:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,492 INFO L87 Difference]: Start difference. First operand 1733 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,529 INFO L93 Difference]: Finished difference Result 2953 states and 4197 transitions. [2023-02-14 22:35:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-14 22:35:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,535 INFO L225 Difference]: With dead ends: 2953 [2023-02-14 22:35:45,535 INFO L226 Difference]: Without dead ends: 2951 [2023-02-14 22:35:45,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,538 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 25 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 103 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2023-02-14 22:35:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2565. [2023-02-14 22:35:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.361544461778471) internal successors, (3491), 2564 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3491 transitions. [2023-02-14 22:35:45,586 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3491 transitions. Word has length 22 [2023-02-14 22:35:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,586 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3491 transitions. [2023-02-14 22:35:45,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3491 transitions. [2023-02-14 22:35:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 22:35:45,588 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,589 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, 1, 1] [2023-02-14 22:35:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-14 22:35:45,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash 243667590, now seen corresponding path program 1 times [2023-02-14 22:35:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491967727] [2023-02-14 22:35:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491967727] [2023-02-14 22:35:45,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491967727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169494407] [2023-02-14 22:35:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,610 INFO L87 Difference]: Start difference. First operand 2565 states and 3491 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,663 INFO L93 Difference]: Finished difference Result 5833 states and 7909 transitions. [2023-02-14 22:35:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-14 22:35:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,670 INFO L225 Difference]: With dead ends: 5833 [2023-02-14 22:35:45,671 INFO L226 Difference]: Without dead ends: 3335 [2023-02-14 22:35:45,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,673 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 135 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2023-02-14 22:35:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3333. [2023-02-14 22:35:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 1.3262304921968788) internal successors, (4419), 3332 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4419 transitions. [2023-02-14 22:35:45,741 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4419 transitions. Word has length 22 [2023-02-14 22:35:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,741 INFO L495 AbstractCegarLoop]: Abstraction has 3333 states and 4419 transitions. [2023-02-14 22:35:45,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4419 transitions. [2023-02-14 22:35:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 22:35:45,744 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-14 22:35:45,745 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash -449217570, now seen corresponding path program 1 times [2023-02-14 22:35:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395563364] [2023-02-14 22:35:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395563364] [2023-02-14 22:35:45,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395563364] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497634806] [2023-02-14 22:35:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,767 INFO L87 Difference]: Start difference. First operand 3333 states and 4419 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,820 INFO L93 Difference]: Finished difference Result 5001 states and 6597 transitions. [2023-02-14 22:35:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-14 22:35:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:45,827 INFO L225 Difference]: With dead ends: 5001 [2023-02-14 22:35:45,827 INFO L226 Difference]: Without dead ends: 3399 [2023-02-14 22:35:45,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,829 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:45,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 120 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2023-02-14 22:35:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3397. [2023-02-14 22:35:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 1.3012367491166077) internal successors, (4419), 3396 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4419 transitions. [2023-02-14 22:35:45,893 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4419 transitions. Word has length 23 [2023-02-14 22:35:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 4419 transitions. [2023-02-14 22:35:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4419 transitions. [2023-02-14 22:35:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 22:35:45,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:45,896 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, 1, 1, 1] [2023-02-14 22:35:45,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-14 22:35:45,896 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1036023584, now seen corresponding path program 1 times [2023-02-14 22:35:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756657246] [2023-02-14 22:35:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:45,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756657246] [2023-02-14 22:35:45,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756657246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:45,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:45,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039795001] [2023-02-14 22:35:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:45,915 INFO L87 Difference]: Start difference. First operand 3397 states and 4419 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:45,994 INFO L93 Difference]: Finished difference Result 5641 states and 7365 transitions. [2023-02-14 22:35:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-14 22:35:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:46,018 INFO L225 Difference]: With dead ends: 5641 [2023-02-14 22:35:46,018 INFO L226 Difference]: Without dead ends: 5639 [2023-02-14 22:35:46,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,020 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2023-02-14 22:35:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5125. [2023-02-14 22:35:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 1.2620999219359874) internal successors, (6467), 5124 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 6467 transitions. [2023-02-14 22:35:46,116 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 6467 transitions. Word has length 23 [2023-02-14 22:35:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:46,116 INFO L495 AbstractCegarLoop]: Abstraction has 5125 states and 6467 transitions. [2023-02-14 22:35:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 6467 transitions. [2023-02-14 22:35:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 22:35:46,121 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:46,121 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, 1, 1, 1] [2023-02-14 22:35:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-14 22:35:46,121 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash -777858146, now seen corresponding path program 1 times [2023-02-14 22:35:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:46,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588800058] [2023-02-14 22:35:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:46,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:46,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588800058] [2023-02-14 22:35:46,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588800058] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:46,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:46,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963064299] [2023-02-14 22:35:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,136 INFO L87 Difference]: Start difference. First operand 5125 states and 6467 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:46,238 INFO L93 Difference]: Finished difference Result 11529 states and 14405 transitions. [2023-02-14 22:35:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-14 22:35:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:46,245 INFO L225 Difference]: With dead ends: 11529 [2023-02-14 22:35:46,245 INFO L226 Difference]: Without dead ends: 6535 [2023-02-14 22:35:46,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,249 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:46,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2023-02-14 22:35:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6533. [2023-02-14 22:35:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6533 states, 6532 states have (on average 1.2154011022657685) internal successors, (7939), 6532 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6533 states to 6533 states and 7939 transitions. [2023-02-14 22:35:46,354 INFO L78 Accepts]: Start accepts. Automaton has 6533 states and 7939 transitions. Word has length 23 [2023-02-14 22:35:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:46,354 INFO L495 AbstractCegarLoop]: Abstraction has 6533 states and 7939 transitions. [2023-02-14 22:35:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6533 states and 7939 transitions. [2023-02-14 22:35:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 22:35:46,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:46,360 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, 1, 1, 1, 1] [2023-02-14 22:35:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-14 22:35:46,360 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2051743973, now seen corresponding path program 1 times [2023-02-14 22:35:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557129715] [2023-02-14 22:35:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:46,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557129715] [2023-02-14 22:35:46,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557129715] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:46,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:46,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065425370] [2023-02-14 22:35:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,372 INFO L87 Difference]: Start difference. First operand 6533 states and 7939 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:46,464 INFO L93 Difference]: Finished difference Result 9801 states and 11845 transitions. [2023-02-14 22:35:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:46,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-14 22:35:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:46,471 INFO L225 Difference]: With dead ends: 9801 [2023-02-14 22:35:46,471 INFO L226 Difference]: Without dead ends: 6663 [2023-02-14 22:35:46,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,474 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:46,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6663 states. [2023-02-14 22:35:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6663 to 6661. [2023-02-14 22:35:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 1.1920420420420421) internal successors, (7939), 6660 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 7939 transitions. [2023-02-14 22:35:46,609 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 7939 transitions. Word has length 24 [2023-02-14 22:35:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:46,610 INFO L495 AbstractCegarLoop]: Abstraction has 6661 states and 7939 transitions. [2023-02-14 22:35:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 7939 transitions. [2023-02-14 22:35:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 22:35:46,614 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:46,614 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, 1, 1, 1, 1] [2023-02-14 22:35:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-14 22:35:46,615 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1656417309, now seen corresponding path program 1 times [2023-02-14 22:35:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:46,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245318599] [2023-02-14 22:35:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:46,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245318599] [2023-02-14 22:35:46,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245318599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:46,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:46,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89475175] [2023-02-14 22:35:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:46,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:46,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,627 INFO L87 Difference]: Start difference. First operand 6661 states and 7939 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:46,728 INFO L93 Difference]: Finished difference Result 10759 states and 12676 transitions. [2023-02-14 22:35:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-14 22:35:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:46,741 INFO L225 Difference]: With dead ends: 10759 [2023-02-14 22:35:46,741 INFO L226 Difference]: Without dead ends: 10757 [2023-02-14 22:35:46,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,744 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:46,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 98 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2023-02-14 22:35:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10245. [2023-02-14 22:35:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10244 states have (on average 1.1623389301054277) internal successors, (11907), 10244 states have internal predecessors, (11907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 11907 transitions. [2023-02-14 22:35:46,940 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 11907 transitions. Word has length 24 [2023-02-14 22:35:46,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:46,940 INFO L495 AbstractCegarLoop]: Abstraction has 10245 states and 11907 transitions. [2023-02-14 22:35:46,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 11907 transitions. [2023-02-14 22:35:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 22:35:46,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:35:46,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:46,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-14 22:35:46,951 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:35:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:35:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1914582747, now seen corresponding path program 1 times [2023-02-14 22:35:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:35:46,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111862580] [2023-02-14 22:35:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:35:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:35:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:35:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:35:46,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:35:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111862580] [2023-02-14 22:35:46,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111862580] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:35:46,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:35:46,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:35:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392384471] [2023-02-14 22:35:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:35:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:35:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:35:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:35:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:46,964 INFO L87 Difference]: Start difference. First operand 10245 states and 11907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:35:47,129 INFO L93 Difference]: Finished difference Result 22789 states and 25987 transitions. [2023-02-14 22:35:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:35:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-14 22:35:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:35:47,130 INFO L225 Difference]: With dead ends: 22789 [2023-02-14 22:35:47,130 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 22:35:47,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:35:47,143 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 34 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:35:47,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:35:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 22:35:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 22:35:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 22:35:47,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-02-14 22:35:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:35:47,144 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 22:35:47,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:35:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 22:35:47,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 22:35:47,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 22:35:47,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-14 22:35:47,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 22:35:47,156 INFO L899 garLoopResultBuilder]: For program point L126-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 151) the Hoare annotation is: true [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L127(line 127) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L111-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L136-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L95-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L87-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,157 INFO L899 garLoopResultBuilder]: For program point L112(line 112) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L71-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L63(lines 63 65) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L121-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2023-02-14 22:35:47,158 INFO L902 garLoopResultBuilder]: At program point L147(lines 7 151) the Hoare annotation is: true [2023-02-14 22:35:47,158 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L131-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 149) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L132(line 132) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L91-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L116-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,159 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,160 INFO L902 garLoopResultBuilder]: At program point L141-1(lines 38 146) the Hoare annotation is: true [2023-02-14 22:35:47,160 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,160 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,160 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 151) the Hoare annotation is: false [2023-02-14 22:35:47,160 INFO L899 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2023-02-14 22:35:47,160 INFO L899 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2023-02-14 22:35:47,160 INFO L899 garLoopResultBuilder]: For program point L101-1(lines 38 146) no Hoare annotation was computed. [2023-02-14 22:35:47,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:35:47,164 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 22:35:47,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:35:47 BoogieIcfgContainer [2023-02-14 22:35:47,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 22:35:47,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 22:35:47,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 22:35:47,170 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 22:35:47,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:35:43" (3/4) ... [2023-02-14 22:35:47,172 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 22:35:47,179 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-14 22:35:47,179 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 22:35:47,180 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 22:35:47,180 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 22:35:47,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 22:35:47,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 22:35:47,205 INFO L158 Benchmark]: Toolchain (without parser) took 4002.26ms. Allocated memory was 140.5MB in the beginning and 425.7MB in the end (delta: 285.2MB). Free memory was 104.6MB in the beginning and 267.0MB in the end (delta: -162.4MB). Peak memory consumption was 124.2MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,205 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 22:35:47,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.58ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 93.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.61ms. Allocated memory is still 140.5MB. Free memory was 93.6MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,205 INFO L158 Benchmark]: Boogie Preprocessor took 15.53ms. Allocated memory is still 140.5MB. Free memory was 92.0MB in the beginning and 90.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,206 INFO L158 Benchmark]: RCFGBuilder took 263.86ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 77.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,206 INFO L158 Benchmark]: TraceAbstraction took 3486.97ms. Allocated memory was 140.5MB in the beginning and 425.7MB in the end (delta: 285.2MB). Free memory was 76.6MB in the beginning and 270.1MB in the end (delta: -193.5MB). Peak memory consumption was 94.9MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,206 INFO L158 Benchmark]: Witness Printer took 34.49ms. Allocated memory is still 425.7MB. Free memory was 270.1MB in the beginning and 267.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 22:35:47,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.58ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 93.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.61ms. Allocated memory is still 140.5MB. Free memory was 93.6MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.53ms. Allocated memory is still 140.5MB. Free memory was 92.0MB in the beginning and 90.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 263.86ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 77.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3486.97ms. Allocated memory was 140.5MB in the beginning and 425.7MB in the end (delta: 285.2MB). Free memory was 76.6MB in the beginning and 270.1MB in the end (delta: -193.5MB). Peak memory consumption was 94.9MB. Max. memory is 16.1GB. * Witness Printer took 34.49ms. Allocated memory is still 425.7MB. Free memory was 270.1MB in the beginning and 267.0MB 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: 149]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 922 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 922 mSDsluCounter, 3098 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1232 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 1866 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10245occurred in iteration=24, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 25 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 521 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, 0.6s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 1011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-14 22:35:47,229 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