./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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_5.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 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 13:32:26,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:32:26,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:32:26,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:32:26,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:32:26,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:32:26,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:32:26,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:32:26,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:32:26,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:32:26,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:32:26,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:32:26,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:32:26,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:32:26,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:32:26,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:32:26,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:32:26,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:32:26,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:32:26,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:32:26,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:32:26,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:32:26,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:32:26,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:32:26,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:32:26,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:32:26,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:32:26,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:32:26,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:32:26,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:32:26,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:32:26,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:32:26,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:32:26,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:32:26,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:32:26,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:32:26,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:32:26,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:32:26,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:32:26,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:32:26,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:32:26,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 13:32:26,703 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:32:26,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:32:26,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:32:26,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:32:26,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:32:26,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:32:26,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:32:26,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:32:26,706 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:32:26,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:32:26,707 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:32:26,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 13:32:26,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:32:26,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:32:26,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:32:26,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:32:26,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:32:26,709 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:32:26,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:32:26,709 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:32:26,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:32:26,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:32:26,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:32:26,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:32:26,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:32:26,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:32:26,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:32:26,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:32:26,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 13:32:26,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 13:32:26,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:32:26,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:32:26,712 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:32:26,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:32:26,712 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:32:26,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2023-02-18 13:32:26,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:32:27,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:32:27,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:32:27,008 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:32:27,008 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:32:27,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2023-02-18 13:32:28,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:32:28,340 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:32:28,340 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2023-02-18 13:32:28,349 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9223f05c5/83ae82c26ebf449198b6c0f8a3179851/FLAGa277ae041 [2023-02-18 13:32:28,363 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9223f05c5/83ae82c26ebf449198b6c0f8a3179851 [2023-02-18 13:32:28,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:32:28,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:32:28,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:32:28,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:32:28,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:32:28,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32722c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28, skipping insertion in model container [2023-02-18 13:32:28,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:32:28,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:32:28,536 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_5.c[2207,2220] [2023-02-18 13:32:28,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:32:28,550 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:32:28,577 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_5.c[2207,2220] [2023-02-18 13:32:28,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:32:28,593 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:32:28,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28 WrapperNode [2023-02-18 13:32:28,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:32:28,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:32:28,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:32:28,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:32:28,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,625 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2023-02-18 13:32:28,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:32:28,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:32:28,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:32:28,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:32:28,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,657 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:32:28,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:32:28,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:32:28,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:32:28,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (1/1) ... [2023-02-18 13:32:28,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:32:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:32:28,693 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) [2023-02-18 13:32:28,717 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 [2023-02-18 13:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:32:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 13:32:28,812 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:32:28,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:32:28,918 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:32:28,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:32:28,923 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 13:32:28,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:32:28 BoogieIcfgContainer [2023-02-18 13:32:28,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:32:28,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:32:28,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:32:28,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:32:28,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:32:28" (1/3) ... [2023-02-18 13:32:28,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f64e3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:32:28, skipping insertion in model container [2023-02-18 13:32:28,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:32:28" (2/3) ... [2023-02-18 13:32:28,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f64e3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:32:28, skipping insertion in model container [2023-02-18 13:32:28,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:32:28" (3/3) ... [2023-02-18 13:32:28,932 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2023-02-18 13:32:28,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:32:28,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:32:28,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:32:29,005 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;@58174a85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:32:29,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:32:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 13:32:29,012 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2023-02-18 13:32:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935430523] [2023-02-18 13:32:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935430523] [2023-02-18 13:32:29,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935430523] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342937488] [2023-02-18 13:32:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,252 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,281 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2023-02-18 13:32:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 13:32:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,289 INFO L225 Difference]: With dead ends: 53 [2023-02-18 13:32:29,290 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 13:32:29,292 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 [2023-02-18 13:32:29,295 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 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 [2023-02-18 13:32:29,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 13:32:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2023-02-18 13:32:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2023-02-18 13:32:29,322 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2023-02-18 13:32:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,323 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2023-02-18 13:32:29,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2023-02-18 13:32:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 13:32:29,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 13:32:29,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2023-02-18 13:32:29,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044373555] [2023-02-18 13:32:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044373555] [2023-02-18 13:32:29,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044373555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632283254] [2023-02-18 13:32:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,371 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,400 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2023-02-18 13:32:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 13:32:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,402 INFO L225 Difference]: With dead ends: 64 [2023-02-18 13:32:29,402 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 13:32:29,403 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 [2023-02-18 13:32:29,404 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 73 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 [2023-02-18 13:32:29,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 73 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 13:32:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-02-18 13:32:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2023-02-18 13:32:29,410 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2023-02-18 13:32:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2023-02-18 13:32:29,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2023-02-18 13:32:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 13:32:29,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 13:32:29,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2023-02-18 13:32:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692524545] [2023-02-18 13:32:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692524545] [2023-02-18 13:32:29,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692524545] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004168976] [2023-02-18 13:32:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,496 INFO L87 Difference]: Start difference. First operand 37 states and 62 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) [2023-02-18 13:32:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,520 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2023-02-18 13:32:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,521 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 [2023-02-18 13:32:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,522 INFO L225 Difference]: With dead ends: 60 [2023-02-18 13:32:29,523 INFO L226 Difference]: Without dead ends: 42 [2023-02-18 13:32:29,524 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 [2023-02-18 13:32:29,526 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 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 [2023-02-18 13:32:29,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-18 13:32:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-02-18 13:32:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.641025641025641) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2023-02-18 13:32:29,538 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2023-02-18 13:32:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,539 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2023-02-18 13:32:29,539 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) [2023-02-18 13:32:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2023-02-18 13:32:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 13:32:29,540 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 13:32:29,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2023-02-18 13:32:29,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121677748] [2023-02-18 13:32:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121677748] [2023-02-18 13:32:29,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121677748] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383232453] [2023-02-18 13:32:29,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,601 INFO L87 Difference]: Start difference. First operand 40 states and 64 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) [2023-02-18 13:32:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,623 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2023-02-18 13:32:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,624 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 [2023-02-18 13:32:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,626 INFO L225 Difference]: With dead ends: 73 [2023-02-18 13:32:29,627 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 13:32:29,628 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 [2023-02-18 13:32:29,629 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 65 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 [2023-02-18 13:32:29,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 13:32:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2023-02-18 13:32:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 52 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2023-02-18 13:32:29,645 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2023-02-18 13:32:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,646 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2023-02-18 13:32:29,646 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) [2023-02-18 13:32:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2023-02-18 13:32:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 13:32:29,647 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 13:32:29,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2023-02-18 13:32:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874312366] [2023-02-18 13:32:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874312366] [2023-02-18 13:32:29,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874312366] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428041514] [2023-02-18 13:32:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,715 INFO L87 Difference]: Start difference. First operand 53 states and 85 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) [2023-02-18 13:32:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,736 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2023-02-18 13:32:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,736 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 [2023-02-18 13:32:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,737 INFO L225 Difference]: With dead ends: 121 [2023-02-18 13:32:29,739 INFO L226 Difference]: Without dead ends: 73 [2023-02-18 13:32:29,739 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 [2023-02-18 13:32:29,740 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 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 [2023-02-18 13:32:29,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-18 13:32:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-02-18 13:32:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 70 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2023-02-18 13:32:29,755 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2023-02-18 13:32:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,757 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2023-02-18 13:32:29,758 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) [2023-02-18 13:32:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2023-02-18 13:32:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 13:32:29,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 13:32:29,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2023-02-18 13:32:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307053054] [2023-02-18 13:32:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307053054] [2023-02-18 13:32:29,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307053054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037884417] [2023-02-18 13:32:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,801 INFO L87 Difference]: Start difference. First operand 71 states and 111 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) [2023-02-18 13:32:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,822 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2023-02-18 13:32:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,823 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 [2023-02-18 13:32:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,823 INFO L225 Difference]: With dead ends: 108 [2023-02-18 13:32:29,824 INFO L226 Difference]: Without dead ends: 75 [2023-02-18 13:32:29,824 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 [2023-02-18 13:32:29,825 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 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 [2023-02-18 13:32:29,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-18 13:32:29,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-02-18 13:32:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 72 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2023-02-18 13:32:29,840 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2023-02-18 13:32:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,840 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2023-02-18 13:32:29,840 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) [2023-02-18 13:32:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2023-02-18 13:32:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 13:32:29,842 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 13:32:29,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2023-02-18 13:32:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80444404] [2023-02-18 13:32:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80444404] [2023-02-18 13:32:29,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80444404] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762110083] [2023-02-18 13:32:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,884 INFO L87 Difference]: Start difference. First operand 73 states and 111 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) [2023-02-18 13:32:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,910 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2023-02-18 13:32:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,910 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 [2023-02-18 13:32:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,911 INFO L225 Difference]: With dead ends: 201 [2023-02-18 13:32:29,913 INFO L226 Difference]: Without dead ends: 135 [2023-02-18 13:32:29,914 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 [2023-02-18 13:32:29,915 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 67 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 [2023-02-18 13:32:29,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-18 13:32:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-02-18 13:32:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2023-02-18 13:32:29,936 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2023-02-18 13:32:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,936 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2023-02-18 13:32:29,936 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) [2023-02-18 13:32:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2023-02-18 13:32:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 13:32:29,937 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 13:32:29,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2023-02-18 13:32:29,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698232671] [2023-02-18 13:32:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698232671] [2023-02-18 13:32:29,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698232671] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276751976] [2023-02-18 13:32:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,958 INFO L87 Difference]: Start difference. First operand 133 states and 195 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) [2023-02-18 13:32:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:29,966 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2023-02-18 13:32:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:29,966 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 [2023-02-18 13:32:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:29,967 INFO L225 Difference]: With dead ends: 161 [2023-02-18 13:32:29,967 INFO L226 Difference]: Without dead ends: 159 [2023-02-18 13:32:29,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,968 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 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 [2023-02-18 13:32:29,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-18 13:32:29,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2023-02-18 13:32:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2023-02-18 13:32:29,976 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2023-02-18 13:32:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:29,976 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2023-02-18 13:32:29,977 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) [2023-02-18 13:32:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2023-02-18 13:32:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:32:29,978 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:29,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 13:32:29,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2023-02-18 13:32:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:29,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092808449] [2023-02-18 13:32:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092808449] [2023-02-18 13:32:29,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092808449] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:29,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:29,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:29,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345709653] [2023-02-18 13:32:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:29,998 INFO L87 Difference]: Start difference. First operand 133 states and 191 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) [2023-02-18 13:32:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:30,010 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2023-02-18 13:32:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:30,010 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 [2023-02-18 13:32:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:30,011 INFO L225 Difference]: With dead ends: 229 [2023-02-18 13:32:30,011 INFO L226 Difference]: Without dead ends: 227 [2023-02-18 13:32:30,012 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 [2023-02-18 13:32:30,012 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 61 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 [2023-02-18 13:32:30,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-02-18 13:32:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2023-02-18 13:32:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.4114583333333333) internal successors, (271), 192 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2023-02-18 13:32:30,021 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2023-02-18 13:32:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:30,022 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2023-02-18 13:32:30,022 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) [2023-02-18 13:32:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2023-02-18 13:32:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:32:30,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:30,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:30,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 13:32:30,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2023-02-18 13:32:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564051595] [2023-02-18 13:32:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:30,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:30,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564051595] [2023-02-18 13:32:30,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564051595] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:30,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:30,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070606592] [2023-02-18 13:32:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:30,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:30,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:30,043 INFO L87 Difference]: Start difference. First operand 193 states and 271 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) [2023-02-18 13:32:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:30,056 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2023-02-18 13:32:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:30,057 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 [2023-02-18 13:32:30,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:30,058 INFO L225 Difference]: With dead ends: 437 [2023-02-18 13:32:30,058 INFO L226 Difference]: Without dead ends: 251 [2023-02-18 13:32:30,059 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 [2023-02-18 13:32:30,059 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 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 [2023-02-18 13:32:30,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-18 13:32:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2023-02-18 13:32:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3346774193548387) internal successors, (331), 248 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2023-02-18 13:32:30,069 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2023-02-18 13:32:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:30,070 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2023-02-18 13:32:30,070 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) [2023-02-18 13:32:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2023-02-18 13:32:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 13:32:30,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:30,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 13:32:30,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2023-02-18 13:32:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:30,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384730370] [2023-02-18 13:32:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:30,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384730370] [2023-02-18 13:32:30,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384730370] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:30,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:30,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96294457] [2023-02-18 13:32:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:30,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:30,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:30,091 INFO L87 Difference]: Start difference. First operand 249 states and 331 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) [2023-02-18 13:32:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:30,104 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2023-02-18 13:32:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:30,104 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 [2023-02-18 13:32:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:30,106 INFO L225 Difference]: With dead ends: 381 [2023-02-18 13:32:30,106 INFO L226 Difference]: Without dead ends: 263 [2023-02-18 13:32:30,106 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 [2023-02-18 13:32:30,107 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 68 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 [2023-02-18 13:32:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-02-18 13:32:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2023-02-18 13:32:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3038461538461539) internal successors, (339), 260 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2023-02-18 13:32:30,117 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2023-02-18 13:32:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:30,117 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2023-02-18 13:32:30,117 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) [2023-02-18 13:32:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2023-02-18 13:32:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 13:32:30,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:30,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 13:32:30,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2023-02-18 13:32:30,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239087674] [2023-02-18 13:32:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:30,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239087674] [2023-02-18 13:32:30,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239087674] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:30,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:30,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:30,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935646844] [2023-02-18 13:32:30,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:30,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:30,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:30,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:30,139 INFO L87 Difference]: Start difference. First operand 261 states and 339 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) [2023-02-18 13:32:30,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:30,161 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2023-02-18 13:32:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:30,162 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 [2023-02-18 13:32:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:30,163 INFO L225 Difference]: With dead ends: 423 [2023-02-18 13:32:30,164 INFO L226 Difference]: Without dead ends: 421 [2023-02-18 13:32:30,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:30,164 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 58 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 [2023-02-18 13:32:30,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-02-18 13:32:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2023-02-18 13:32:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.2654639175257731) internal successors, (491), 388 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:32:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2023-02-18 13:32:30,176 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2023-02-18 13:32:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:30,176 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2023-02-18 13:32:30,176 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) [2023-02-18 13:32:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2023-02-18 13:32:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 13:32:30,177 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:30,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 13:32:30,178 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:30,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:30,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2023-02-18 13:32:30,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:32:30,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153239951] [2023-02-18 13:32:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:32:30,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:32:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:32:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:32:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153239951] [2023-02-18 13:32:30,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153239951] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:32:30,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:32:30,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:32:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363603473] [2023-02-18 13:32:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:32:30,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:32:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:32:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:32:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:32:30,206 INFO L87 Difference]: Start difference. First operand 389 states and 491 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) [2023-02-18 13:32:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:30,225 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2023-02-18 13:32:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:32:30,226 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 [2023-02-18 13:32:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:30,226 INFO L225 Difference]: With dead ends: 853 [2023-02-18 13:32:30,226 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 13:32:30,228 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 [2023-02-18 13:32:30,229 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 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 [2023-02-18 13:32:30,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:32:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 13:32:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 13:32:30,230 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) [2023-02-18 13:32:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 13:32:30,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-02-18 13:32:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:30,230 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 13:32:30,230 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) [2023-02-18 13:32:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 13:32:30,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 13:32:30,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 13:32:30,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 13:32:30,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 13:32:30,239 INFO L902 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2023-02-18 13:32:30,240 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-02-18 13:32:30,240 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 95) the Hoare annotation is: true [2023-02-18 13:32:30,240 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,240 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 13:32:30,240 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 13:32:30,240 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 13:32:30,241 INFO L902 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2023-02-18 13:32:30,241 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 95) the Hoare annotation is: false [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,242 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,243 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2023-02-18 13:32:30,243 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2023-02-18 13:32:30,243 INFO L899 garLoopResultBuilder]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2023-02-18 13:32:30,245 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:30,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 13:32:30,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:32:30 BoogieIcfgContainer [2023-02-18 13:32:30,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 13:32:30,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 13:32:30,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 13:32:30,254 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 13:32:30,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:32:28" (3/4) ... [2023-02-18 13:32:30,256 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 13:32:30,264 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-18 13:32:30,264 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 13:32:30,264 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 13:32:30,264 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 13:32:30,290 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 13:32:30,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 13:32:30,291 INFO L158 Benchmark]: Toolchain (without parser) took 1923.82ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 61.7MB in the beginning and 79.4MB in the end (delta: -17.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,291 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:32:30,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.44ms. Allocated memory is still 107.0MB. Free memory was 61.7MB in the beginning and 51.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.55ms. Allocated memory is still 107.0MB. Free memory was 51.4MB in the beginning and 50.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:32:30,292 INFO L158 Benchmark]: Boogie Preprocessor took 37.20ms. Allocated memory is still 107.0MB. Free memory was 49.8MB in the beginning and 48.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,292 INFO L158 Benchmark]: RCFGBuilder took 261.50ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 48.5MB in the beginning and 100.3MB in the end (delta: -51.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,293 INFO L158 Benchmark]: TraceAbstraction took 1326.38ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 81.5MB in the end (delta: 18.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,293 INFO L158 Benchmark]: Witness Printer took 37.04ms. Allocated memory is still 132.1MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:32:30,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.44ms. Allocated memory is still 107.0MB. Free memory was 61.7MB in the beginning and 51.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.55ms. Allocated memory is still 107.0MB. Free memory was 51.4MB in the beginning and 50.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.20ms. Allocated memory is still 107.0MB. Free memory was 49.8MB in the beginning and 48.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.50ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 48.5MB in the beginning and 100.3MB in the end (delta: -51.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1326.38ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 81.5MB in the end (delta: 18.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 37.04ms. Allocated memory is still 132.1MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 932 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 358 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 574 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 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, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-18 13:32:30,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE