./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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_6.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 c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 10:52:15,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 10:52:15,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 10:52:15,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 10:52:15,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 10:52:15,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 10:52:15,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 10:52:15,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 10:52:15,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 10:52:15,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 10:52:15,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 10:52:15,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 10:52:15,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 10:52:15,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 10:52:15,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 10:52:15,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 10:52:15,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 10:52:15,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 10:52:15,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 10:52:15,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 10:52:15,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 10:52:15,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 10:52:15,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 10:52:15,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 10:52:15,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 10:52:15,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 10:52:15,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 10:52:15,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 10:52:15,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 10:52:15,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 10:52:15,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 10:52:15,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 10:52:15,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 10:52:15,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 10:52:15,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 10:52:15,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 10:52:15,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 10:52:15,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 10:52:15,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 10:52:15,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 10:52:15,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 10:52:15,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 10:52:15,648 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 10:52:15,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 10:52:15,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 10:52:15,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 10:52:15,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 10:52:15,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 10:52:15,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 10:52:15,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 10:52:15,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 10:52:15,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 10:52:15,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:52:15,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 10:52:15,657 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 10:52:15,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2023-02-14 10:52:15,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 10:52:15,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 10:52:15,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 10:52:15,870 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 10:52:15,870 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 10:52:15,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2023-02-14 10:52:16,930 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 10:52:17,065 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 10:52:17,065 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2023-02-14 10:52:17,070 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a94691b/88d33054580a431f8b8c018ef85daeac/FLAGbde8add20 [2023-02-14 10:52:17,079 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a94691b/88d33054580a431f8b8c018ef85daeac [2023-02-14 10:52:17,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 10:52:17,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 10:52:17,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 10:52:17,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 10:52:17,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 10:52:17,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40302b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17, skipping insertion in model container [2023-02-14 10:52:17,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 10:52:17,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 10:52:17,189 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_6.c[2544,2557] [2023-02-14 10:52:17,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:52:17,197 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 10:52:17,210 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_6.c[2544,2557] [2023-02-14 10:52:17,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:52:17,219 INFO L208 MainTranslator]: Completed translation [2023-02-14 10:52:17,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17 WrapperNode [2023-02-14 10:52:17,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 10:52:17,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 10:52:17,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 10:52:17,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 10:52:17,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,241 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2023-02-14 10:52:17,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 10:52:17,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 10:52:17,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 10:52:17,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 10:52:17,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 10:52:17,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 10:52:17,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 10:52:17,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 10:52:17,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (1/1) ... [2023-02-14 10:52:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:52:17,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:52:17,298 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 10:52:17,319 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 10:52:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 10:52:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 10:52:17,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 10:52:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 10:52:17,396 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 10:52:17,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 10:52:17,595 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 10:52:17,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 10:52:17,599 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 10:52:17,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:52:17 BoogieIcfgContainer [2023-02-14 10:52:17,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 10:52:17,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 10:52:17,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 10:52:17,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 10:52:17,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:52:17" (1/3) ... [2023-02-14 10:52:17,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8409dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:52:17, skipping insertion in model container [2023-02-14 10:52:17,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:52:17" (2/3) ... [2023-02-14 10:52:17,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8409dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:52:17, skipping insertion in model container [2023-02-14 10:52:17,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:52:17" (3/3) ... [2023-02-14 10:52:17,622 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2023-02-14 10:52:17,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 10:52:17,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 10:52:17,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 10:52:17,699 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;@53fb9aac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 10:52:17,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 10:52:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 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 10:52:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 10:52:17,720 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:17,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:17,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:17,733 INFO L85 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2023-02-14 10:52:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:17,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133414803] [2023-02-14 10:52:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:17,912 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 10:52:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133414803] [2023-02-14 10:52:17,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133414803] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:17,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:17,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:17,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827777635] [2023-02-14 10:52:17,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:17,938 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:17,973 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2023-02-14 10:52:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-14 10:52:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:17,981 INFO L225 Difference]: With dead ends: 59 [2023-02-14 10:52:17,982 INFO L226 Difference]: Without dead ends: 45 [2023-02-14 10:52:17,984 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 10:52:17,986 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 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 10:52:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-14 10:52:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2023-02-14 10:52:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2023-02-14 10:52:18,026 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2023-02-14 10:52:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2023-02-14 10:52:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2023-02-14 10:52:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 10:52:18,027 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 10:52:18,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2023-02-14 10:52:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470928027] [2023-02-14 10:52:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,072 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 10:52:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470928027] [2023-02-14 10:52:18,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470928027] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041750667] [2023-02-14 10:52:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,077 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,104 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2023-02-14 10:52:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-14 10:52:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,105 INFO L225 Difference]: With dead ends: 74 [2023-02-14 10:52:18,105 INFO L226 Difference]: Without dead ends: 45 [2023-02-14 10:52:18,105 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 10:52:18,106 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 28 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 87 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 10:52:18,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 87 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-14 10:52:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-02-14 10:52:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 42 states have internal predecessors, (74), 0 states have call successors, (0), 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 10:52:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2023-02-14 10:52:18,116 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2023-02-14 10:52:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2023-02-14 10:52:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2023-02-14 10:52:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 10:52:18,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 10:52:18,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2023-02-14 10:52:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851648267] [2023-02-14 10:52:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,173 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 10:52:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851648267] [2023-02-14 10:52:18,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851648267] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215077365] [2023-02-14 10:52:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,178 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,204 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2023-02-14 10:52:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-14 10:52:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,205 INFO L225 Difference]: With dead ends: 69 [2023-02-14 10:52:18,206 INFO L226 Difference]: Without dead ends: 48 [2023-02-14 10:52:18,206 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 10:52:18,208 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:18,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-14 10:52:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-02-14 10:52:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 0 states have call successors, (0), 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 10:52:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2023-02-14 10:52:18,217 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2023-02-14 10:52:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2023-02-14 10:52:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2023-02-14 10:52:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 10:52:18,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 10:52:18,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2023-02-14 10:52:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400362626] [2023-02-14 10:52:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,282 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 10:52:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400362626] [2023-02-14 10:52:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400362626] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474011806] [2023-02-14 10:52:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,285 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,299 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2023-02-14 10:52:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-14 10:52:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,300 INFO L225 Difference]: With dead ends: 85 [2023-02-14 10:52:18,304 INFO L226 Difference]: Without dead ends: 83 [2023-02-14 10:52:18,304 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 10:52:18,305 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 77 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 10:52:18,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 77 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-14 10:52:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2023-02-14 10:52:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 0 states have call successors, (0), 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 10:52:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2023-02-14 10:52:18,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2023-02-14 10:52:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,315 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2023-02-14 10:52:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2023-02-14 10:52:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 10:52:18,317 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 10:52:18,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2023-02-14 10:52:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744105384] [2023-02-14 10:52:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,358 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 10:52:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744105384] [2023-02-14 10:52:18,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744105384] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363030545] [2023-02-14 10:52:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,361 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,371 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2023-02-14 10:52:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-14 10:52:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,372 INFO L225 Difference]: With dead ends: 141 [2023-02-14 10:52:18,372 INFO L226 Difference]: Without dead ends: 85 [2023-02-14 10:52:18,372 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 10:52:18,373 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 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 10:52:18,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-14 10:52:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2023-02-14 10:52:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.646341463414634) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 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 10:52:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2023-02-14 10:52:18,379 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2023-02-14 10:52:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,379 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2023-02-14 10:52:18,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2023-02-14 10:52:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 10:52:18,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 10:52:18,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2023-02-14 10:52:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978166907] [2023-02-14 10:52:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,400 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 10:52:18,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978166907] [2023-02-14 10:52:18,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978166907] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788120844] [2023-02-14 10:52:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,402 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,411 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2023-02-14 10:52:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 10:52:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,412 INFO L225 Difference]: With dead ends: 126 [2023-02-14 10:52:18,412 INFO L226 Difference]: Without dead ends: 87 [2023-02-14 10:52:18,413 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 10:52:18,413 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:18,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-14 10:52:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-14 10:52:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 0 states have call successors, (0), 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 10:52:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2023-02-14 10:52:18,419 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2023-02-14 10:52:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,420 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2023-02-14 10:52:18,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2023-02-14 10:52:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 10:52:18,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 10:52:18,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2023-02-14 10:52:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333168920] [2023-02-14 10:52:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,439 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 10:52:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333168920] [2023-02-14 10:52:18,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333168920] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965976722] [2023-02-14 10:52:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,441 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,463 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2023-02-14 10:52:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 10:52:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,465 INFO L225 Difference]: With dead ends: 237 [2023-02-14 10:52:18,465 INFO L226 Difference]: Without dead ends: 159 [2023-02-14 10:52:18,466 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 10:52:18,466 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 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 10:52:18,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-14 10:52:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2023-02-14 10:52:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.5576923076923077) internal successors, (243), 156 states have internal predecessors, (243), 0 states have call successors, (0), 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 10:52:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2023-02-14 10:52:18,484 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2023-02-14 10:52:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,484 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2023-02-14 10:52:18,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2023-02-14 10:52:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 10:52:18,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 10:52:18,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2023-02-14 10:52:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533704903] [2023-02-14 10:52:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,514 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 10:52:18,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533704903] [2023-02-14 10:52:18,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533704903] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865112566] [2023-02-14 10:52:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,517 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,536 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2023-02-14 10:52:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 10:52:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,538 INFO L225 Difference]: With dead ends: 193 [2023-02-14 10:52:18,538 INFO L226 Difference]: Without dead ends: 191 [2023-02-14 10:52:18,538 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 10:52:18,540 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 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 10:52:18,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-02-14 10:52:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2023-02-14 10:52:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.5320512820512822) internal successors, (239), 156 states have internal predecessors, (239), 0 states have call successors, (0), 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 10:52:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2023-02-14 10:52:18,561 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2023-02-14 10:52:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,562 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2023-02-14 10:52:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 10:52:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2023-02-14 10:52:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 10:52:18,564 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 10:52:18,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2023-02-14 10:52:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371258056] [2023-02-14 10:52:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,593 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 10:52:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371258056] [2023-02-14 10:52:18,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371258056] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25272268] [2023-02-14 10:52:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,596 INFO L87 Difference]: Start difference. First operand 157 states and 239 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 10:52:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,611 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2023-02-14 10:52:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,612 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 10:52:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,613 INFO L225 Difference]: With dead ends: 277 [2023-02-14 10:52:18,613 INFO L226 Difference]: Without dead ends: 275 [2023-02-14 10:52:18,613 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 10:52:18,614 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 73 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 10:52:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-14 10:52:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2023-02-14 10:52:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4955357142857142) internal successors, (335), 224 states have internal predecessors, (335), 0 states have call successors, (0), 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 10:52:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2023-02-14 10:52:18,625 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2023-02-14 10:52:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,625 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2023-02-14 10:52:18,625 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 10:52:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2023-02-14 10:52:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 10:52:18,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 10:52:18,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2023-02-14 10:52:18,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405152129] [2023-02-14 10:52:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,643 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 10:52:18,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405152129] [2023-02-14 10:52:18,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405152129] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830253675] [2023-02-14 10:52:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,646 INFO L87 Difference]: Start difference. First operand 225 states and 335 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 10:52:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,661 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2023-02-14 10:52:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,661 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 10:52:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,662 INFO L225 Difference]: With dead ends: 517 [2023-02-14 10:52:18,662 INFO L226 Difference]: Without dead ends: 299 [2023-02-14 10:52:18,663 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 10:52:18,663 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 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 10:52:18,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-02-14 10:52:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2023-02-14 10:52:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4425675675675675) internal successors, (427), 296 states have internal predecessors, (427), 0 states have call successors, (0), 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 10:52:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2023-02-14 10:52:18,672 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2023-02-14 10:52:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,672 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2023-02-14 10:52:18,672 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 10:52:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2023-02-14 10:52:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 10:52:18,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,673 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 10:52:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-14 10:52:18,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2023-02-14 10:52:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390631583] [2023-02-14 10:52:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,695 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 10:52:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390631583] [2023-02-14 10:52:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390631583] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811486448] [2023-02-14 10:52:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,697 INFO L87 Difference]: Start difference. First operand 297 states and 427 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 10:52:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,707 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2023-02-14 10:52:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,707 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 10:52:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,708 INFO L225 Difference]: With dead ends: 453 [2023-02-14 10:52:18,708 INFO L226 Difference]: Without dead ends: 311 [2023-02-14 10:52:18,709 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 10:52:18,709 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 27 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 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 10:52:18,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-02-14 10:52:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2023-02-14 10:52:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4123376623376624) internal successors, (435), 308 states have internal predecessors, (435), 0 states have call successors, (0), 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 10:52:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2023-02-14 10:52:18,717 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2023-02-14 10:52:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,717 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2023-02-14 10:52:18,718 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 10:52:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2023-02-14 10:52:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 10:52:18,718 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,719 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 10:52:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-14 10:52:18,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2023-02-14 10:52:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926606568] [2023-02-14 10:52:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,733 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 10:52:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926606568] [2023-02-14 10:52:18,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926606568] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284208091] [2023-02-14 10:52:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,735 INFO L87 Difference]: Start difference. First operand 309 states and 435 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 10:52:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,746 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2023-02-14 10:52:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,747 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 10:52:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,748 INFO L225 Difference]: With dead ends: 521 [2023-02-14 10:52:18,748 INFO L226 Difference]: Without dead ends: 519 [2023-02-14 10:52:18,749 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 10:52:18,749 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 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 10:52:18,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-02-14 10:52:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2023-02-14 10:52:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.3694690265486726) internal successors, (619), 452 states have internal predecessors, (619), 0 states have call successors, (0), 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 10:52:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2023-02-14 10:52:18,759 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2023-02-14 10:52:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,759 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2023-02-14 10:52:18,759 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 10:52:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2023-02-14 10:52:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 10:52:18,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,760 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 10:52:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-14 10:52:18,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2023-02-14 10:52:18,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227113537] [2023-02-14 10:52:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,773 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 10:52:18,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227113537] [2023-02-14 10:52:18,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227113537] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634597604] [2023-02-14 10:52:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,774 INFO L87 Difference]: Start difference. First operand 453 states and 619 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 10:52:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,789 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2023-02-14 10:52:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,789 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 10:52:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,791 INFO L225 Difference]: With dead ends: 1017 [2023-02-14 10:52:18,791 INFO L226 Difference]: Without dead ends: 583 [2023-02-14 10:52:18,791 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 10:52:18,792 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:52:18,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-02-14 10:52:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2023-02-14 10:52:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.3017241379310345) internal successors, (755), 580 states have internal predecessors, (755), 0 states have call successors, (0), 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 10:52:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2023-02-14 10:52:18,805 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2023-02-14 10:52:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,805 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2023-02-14 10:52:18,805 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 10:52:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2023-02-14 10:52:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 10:52:18,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,806 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 10:52:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-14 10:52:18,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2023-02-14 10:52:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664356476] [2023-02-14 10:52:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,819 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 10:52:18,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664356476] [2023-02-14 10:52:18,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664356476] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906283436] [2023-02-14 10:52:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,821 INFO L87 Difference]: Start difference. First operand 581 states and 755 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 10:52:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,834 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2023-02-14 10:52:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,835 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 10:52:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,836 INFO L225 Difference]: With dead ends: 873 [2023-02-14 10:52:18,836 INFO L226 Difference]: Without dead ends: 599 [2023-02-14 10:52:18,837 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 10:52:18,837 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 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 10:52:18,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-02-14 10:52:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2023-02-14 10:52:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.266778523489933) internal successors, (755), 596 states have internal predecessors, (755), 0 states have call successors, (0), 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 10:52:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2023-02-14 10:52:18,859 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2023-02-14 10:52:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,859 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2023-02-14 10:52:18,860 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 10:52:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2023-02-14 10:52:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 10:52:18,860 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,860 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 10:52:18,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-14 10:52:18,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2023-02-14 10:52:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881514057] [2023-02-14 10:52:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,874 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 10:52:18,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881514057] [2023-02-14 10:52:18,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881514057] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141745611] [2023-02-14 10:52:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,876 INFO L87 Difference]: Start difference. First operand 597 states and 755 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 10:52:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,898 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2023-02-14 10:52:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,899 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 10:52:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,901 INFO L225 Difference]: With dead ends: 967 [2023-02-14 10:52:18,901 INFO L226 Difference]: Without dead ends: 965 [2023-02-14 10:52:18,901 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 10:52:18,902 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 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 10:52:18,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-02-14 10:52:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2023-02-14 10:52:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.23) internal successors, (1107), 900 states have internal predecessors, (1107), 0 states have call successors, (0), 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 10:52:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2023-02-14 10:52:18,922 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2023-02-14 10:52:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,922 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2023-02-14 10:52:18,922 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 10:52:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2023-02-14 10:52:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 10:52:18,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:52:18,924 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 10:52:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-14 10:52:18,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:52:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:52:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2023-02-14 10:52:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:52:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604327438] [2023-02-14 10:52:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:52:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:52:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:52:18,944 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 10:52:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:52:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604327438] [2023-02-14 10:52:18,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604327438] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:52:18,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:52:18,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:52:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007508568] [2023-02-14 10:52:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:52:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:52:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:52:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:52:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:52:18,946 INFO L87 Difference]: Start difference. First operand 901 states and 1107 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 10:52:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:52:18,975 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2023-02-14 10:52:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:52:18,975 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 10:52:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:52:18,976 INFO L225 Difference]: With dead ends: 1989 [2023-02-14 10:52:18,976 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 10:52:18,977 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 10:52:18,978 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 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 10:52:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 10:52:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 10:52:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 10:52:18,979 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 10:52:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 10:52:18,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-02-14 10:52:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:52:18,979 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 10:52:18,979 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 10:52:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 10:52:18,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 10:52:18,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 10:52:18,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-14 10:52:18,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 10:52:18,992 INFO L899 garLoopResultBuilder]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,992 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-02-14 10:52:18,992 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,992 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 109) the Hoare annotation is: true [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L902 garLoopResultBuilder]: At program point L105(lines 7 109) the Hoare annotation is: true [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,993 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L90(line 90) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L902 garLoopResultBuilder]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 10:52:18,994 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-02-14 10:52:18,995 INFO L899 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2023-02-14 10:52:18,995 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 109) the Hoare annotation is: false [2023-02-14 10:52:18,995 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,995 INFO L899 garLoopResultBuilder]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2023-02-14 10:52:18,997 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 10:52:19,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 10:52:19,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:52:19 BoogieIcfgContainer [2023-02-14 10:52:19,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 10:52:19,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 10:52:19,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 10:52:19,007 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 10:52:19,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:52:17" (3/4) ... [2023-02-14 10:52:19,010 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 10:52:19,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-14 10:52:19,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 10:52:19,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 10:52:19,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 10:52:19,048 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 10:52:19,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 10:52:19,049 INFO L158 Benchmark]: Toolchain (without parser) took 1967.34ms. Allocated memory was 100.7MB in the beginning and 157.3MB in the end (delta: 56.6MB). Free memory was 58.8MB in the beginning and 73.9MB in the end (delta: -15.1MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,049 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 10:52:19,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.60ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 48.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.92ms. Allocated memory is still 100.7MB. Free memory was 48.0MB in the beginning and 46.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,050 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 45.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,050 INFO L158 Benchmark]: RCFGBuilder took 333.59ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 45.2MB in the beginning and 97.7MB in the end (delta: -52.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,051 INFO L158 Benchmark]: TraceAbstraction took 1404.56ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 97.3MB in the beginning and 77.0MB in the end (delta: 20.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,051 INFO L158 Benchmark]: Witness Printer took 41.35ms. Allocated memory is still 157.3MB. Free memory was 77.0MB in the beginning and 73.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 10:52:19,054 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 100.7MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 137.60ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 48.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.92ms. Allocated memory is still 100.7MB. Free memory was 48.0MB in the beginning and 46.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 45.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.59ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 45.2MB in the beginning and 97.7MB in the end (delta: -52.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1404.56ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 97.3MB in the beginning and 77.0MB in the end (delta: 20.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Witness Printer took 41.35ms. Allocated memory is still 157.3MB. Free memory was 77.0MB in the beginning and 73.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 391 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 391 mSDsluCounter, 1355 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 527 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 828 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-02-14 10:52:19,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE