./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/diamond_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/diamond_1-1.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 bd9be28702be20fbd75b67eebfdc5f85895ff340c238c235c391c2a8578e7b23 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:33:59,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:33:59,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:33:59,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:33:59,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:33:59,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:33:59,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:33:59,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:33:59,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:33:59,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:33:59,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:33:59,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:33:59,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:33:59,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:33:59,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:33:59,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:33:59,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:33:59,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:33:59,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:33:59,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:33:59,332 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:33:59,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:33:59,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:33:59,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:33:59,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:33:59,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:33:59,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:33:59,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:33:59,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:33:59,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:33:59,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:33:59,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:33:59,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:33:59,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:33:59,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:33:59,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:33:59,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:33:59,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:33:59,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:33:59,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:33:59,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:33:59,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:33:59,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:33:59,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:33:59,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:33:59,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:33:59,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:33:59,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:33:59,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:33:59,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:33:59,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:33:59,390 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:33:59,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:33:59,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:33:59,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:33:59,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:33:59,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:33:59,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:33:59,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:33:59,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:33:59,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:33:59,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:33:59,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:33:59,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:33:59,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:33:59,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:33:59,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:33:59,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:33:59,396 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:33:59,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:33:59,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:33:59,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd9be28702be20fbd75b67eebfdc5f85895ff340c238c235c391c2a8578e7b23 [2022-07-21 02:33:59,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:33:59,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:33:59,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:33:59,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:33:59,699 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:33:59,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/diamond_1-1.c [2022-07-21 02:33:59,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb74580/c81fbe6dd91a43588a11a0dc40aa4219/FLAG88aaa5643 [2022-07-21 02:34:00,139 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:34:00,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_1-1.c [2022-07-21 02:34:00,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb74580/c81fbe6dd91a43588a11a0dc40aa4219/FLAG88aaa5643 [2022-07-21 02:34:00,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb74580/c81fbe6dd91a43588a11a0dc40aa4219 [2022-07-21 02:34:00,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:34:00,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:34:00,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:34:00,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:34:00,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:34:00,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9dde0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00, skipping insertion in model container [2022-07-21 02:34:00,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:34:00,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:34:00,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_1-1.c[373,386] [2022-07-21 02:34:00,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:34:00,698 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:34:00,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_1-1.c[373,386] [2022-07-21 02:34:00,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:34:00,742 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:34:00,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00 WrapperNode [2022-07-21 02:34:00,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:34:00,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:34:00,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:34:00,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:34:00,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,781 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-21 02:34:00,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:34:00,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:34:00,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:34:00,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:34:00,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:34:00,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:34:00,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:34:00,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:34:00,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (1/1) ... [2022-07-21 02:34:00,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:34:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:34:00,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:34:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:34:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:34:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:34:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:34:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:34:00,981 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:34:00,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:34:01,121 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:34:01,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:34:01,128 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:34:01,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:34:01 BoogieIcfgContainer [2022-07-21 02:34:01,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:34:01,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:34:01,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:34:01,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:34:01,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:34:00" (1/3) ... [2022-07-21 02:34:01,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef9fb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:34:01, skipping insertion in model container [2022-07-21 02:34:01,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:34:00" (2/3) ... [2022-07-21 02:34:01,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef9fb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:34:01, skipping insertion in model container [2022-07-21 02:34:01,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:34:01" (3/3) ... [2022-07-21 02:34:01,139 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_1-1.c [2022-07-21 02:34:01,152 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:34:01,152 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:34:01,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:34:01,214 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52baba52, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f086336 [2022-07-21 02:34:01,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:34:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:34:01,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:34:01,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:34:01,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:34:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:34:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-07-21 02:34:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:34:01,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793662896] [2022-07-21 02:34:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:34:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:34:01,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793662896] [2022-07-21 02:34:01,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793662896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:34:01,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:34:01,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:34:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103734813] [2022-07-21 02:34:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:34:01,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:34:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:34:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:34:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:34:01,416 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:34:01,426 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-21 02:34:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:34:01,428 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-21 02:34:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:34:01,434 INFO L225 Difference]: With dead ends: 20 [2022-07-21 02:34:01,434 INFO L226 Difference]: Without dead ends: 8 [2022-07-21 02:34:01,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:34:01,444 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:34:01,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:34:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-21 02:34:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-21 02:34:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-07-21 02:34:01,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-07-21 02:34:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:34:01,474 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-07-21 02:34:01,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-07-21 02:34:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:34:01,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:34:01,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:34:01,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:34:01,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:34:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:34:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-07-21 02:34:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:34:01,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298994356] [2022-07-21 02:34:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:34:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:01,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:34:01,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298994356] [2022-07-21 02:34:01,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298994356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:34:01,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:34:01,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:34:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461578214] [2022-07-21 02:34:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:34:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:34:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:34:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:34:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:34:01,610 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:34:01,622 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-07-21 02:34:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:34:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-21 02:34:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:34:01,624 INFO L225 Difference]: With dead ends: 14 [2022-07-21 02:34:01,624 INFO L226 Difference]: Without dead ends: 10 [2022-07-21 02:34:01,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:34:01,625 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:34:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:34:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-21 02:34:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-07-21 02:34:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-07-21 02:34:01,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-07-21 02:34:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:34:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-07-21 02:34:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-07-21 02:34:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:34:01,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:34:01,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:34:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:34:01,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:34:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:34:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash 297538966, now seen corresponding path program 1 times [2022-07-21 02:34:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:34:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261884998] [2022-07-21 02:34:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:34:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:01,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:34:01,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261884998] [2022-07-21 02:34:01,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261884998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:34:01,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121439641] [2022-07-21 02:34:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:34:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:34:01,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:34:01,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:34:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:01,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 02:34:01,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:34:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:01,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:34:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:02,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121439641] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:34:02,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:34:02,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2022-07-21 02:34:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424426803] [2022-07-21 02:34:02,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:34:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 02:34:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:34:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 02:34:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 02:34:02,013 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:34:02,129 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2022-07-21 02:34:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 02:34:02,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-21 02:34:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:34:02,130 INFO L225 Difference]: With dead ends: 26 [2022-07-21 02:34:02,130 INFO L226 Difference]: Without dead ends: 14 [2022-07-21 02:34:02,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-21 02:34:02,132 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:34:02,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:34:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-21 02:34:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2022-07-21 02:34:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-21 02:34:02,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2022-07-21 02:34:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:34:02,136 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-21 02:34:02,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-21 02:34:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 02:34:02,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:34:02,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-21 02:34:02,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:34:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:34:02,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:34:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:34:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1775672709, now seen corresponding path program 2 times [2022-07-21 02:34:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:34:02,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202379550] [2022-07-21 02:34:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:34:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:34:02,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202379550] [2022-07-21 02:34:02,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202379550] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:34:02,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517338642] [2022-07-21 02:34:02,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:34:02,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:34:02,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:34:02,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:34:02,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:34:02,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:34:02,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:34:02,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 02:34:02,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:34:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:02,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:34:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:02,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517338642] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:34:02,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:34:02,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-21 02:34:02,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401971058] [2022-07-21 02:34:02,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:34:02,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 02:34:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:34:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 02:34:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-21 02:34:02,546 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:34:02,652 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-21 02:34:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 02:34:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 02:34:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:34:02,653 INFO L225 Difference]: With dead ends: 25 [2022-07-21 02:34:02,653 INFO L226 Difference]: Without dead ends: 21 [2022-07-21 02:34:02,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-07-21 02:34:02,655 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:34:02,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:34:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-21 02:34:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-07-21 02:34:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-07-21 02:34:02,660 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2022-07-21 02:34:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:34:02,661 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-07-21 02:34:02,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-07-21 02:34:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 02:34:02,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:34:02,662 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2022-07-21 02:34:02,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 02:34:02,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 02:34:02,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:34:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:34:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1714863729, now seen corresponding path program 3 times [2022-07-21 02:34:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:34:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451289898] [2022-07-21 02:34:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:34:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:34:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:34:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:34:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:34:03,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451289898] [2022-07-21 02:34:03,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451289898] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:34:03,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918507128] [2022-07-21 02:34:03,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 02:34:03,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:34:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:34:03,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:34:03,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 02:34:03,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 02:34:03,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:34:03,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 02:34:03,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:34:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:34:03,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:34:03,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918507128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:34:03,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 02:34:03,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-21 02:34:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578178211] [2022-07-21 02:34:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:34:03,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 02:34:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:34:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 02:34:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:34:03,191 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:34:03,251 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-07-21 02:34:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 02:34:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 02:34:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:34:03,252 INFO L225 Difference]: With dead ends: 19 [2022-07-21 02:34:03,252 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 02:34:03,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-21 02:34:03,254 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:34:03,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:34:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 02:34:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 02:34:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 02:34:03,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-07-21 02:34:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:34:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 02:34:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:34:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 02:34:03,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 02:34:03,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:34:03,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 02:34:03,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:34:03,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 02:34:03,556 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 02:34:03,556 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2022-07-21 02:34:03,556 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 26) no Hoare annotation was computed. [2022-07-21 02:34:03,556 INFO L899 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2022-07-21 02:34:03,556 INFO L902 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2022-07-21 02:34:03,556 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 02:34:03,557 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 02:34:03,557 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 02:34:03,557 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2022-07-21 02:34:03,557 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2022-07-21 02:34:03,557 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 17 23) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~y~0#1| 2))) (or (and (<= 1 (mod (+ |ULTIMATE.start_main_~x~0#1| 1) 2)) (= (mod |ULTIMATE.start_main_~x~0#1| 2) .cse0)) (= |ULTIMATE.start_main_~x~0#1| 0) (and (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 99) (not (= .cse0 0))))) [2022-07-21 02:34:03,557 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-21 02:34:03,562 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-07-21 02:34:03,564 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:34:03,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:34:03 BoogieIcfgContainer [2022-07-21 02:34:03,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:34:03,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:34:03,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:34:03,579 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:34:03,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:34:01" (3/4) ... [2022-07-21 02:34:03,582 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 02:34:03,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 02:34:03,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 02:34:03,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 02:34:03,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 02:34:03,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:34:03,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:34:03,619 INFO L158 Benchmark]: Toolchain (without parser) took 3061.35ms. Allocated memory was 54.5MB in the beginning and 88.1MB in the end (delta: 33.6MB). Free memory was 32.3MB in the beginning and 53.4MB in the end (delta: -21.2MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,619 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:34:03,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.31ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 34.4MB in the end (delta: -2.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.25ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 57.4MB in the end (delta: -23.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,620 INFO L158 Benchmark]: Boogie Preprocessor took 46.09ms. Allocated memory is still 73.4MB. Free memory was 57.4MB in the beginning and 56.4MB in the end (delta: 999.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,620 INFO L158 Benchmark]: RCFGBuilder took 300.92ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 47.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,621 INFO L158 Benchmark]: TraceAbstraction took 2446.24ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.3MB in the beginning and 55.6MB in the end (delta: -8.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,621 INFO L158 Benchmark]: Witness Printer took 39.62ms. Allocated memory is still 88.1MB. Free memory was 55.6MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:34:03,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.31ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 34.4MB in the end (delta: -2.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.25ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 57.4MB in the end (delta: -23.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.09ms. Allocated memory is still 73.4MB. Free memory was 57.4MB in the beginning and 56.4MB in the end (delta: 999.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.92ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 47.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2446.24ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.3MB in the beginning and 55.6MB in the end (delta: -8.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 39.62ms. Allocated memory is still 88.1MB. Free memory was 55.6MB in the beginning and 53.4MB 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: 8]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 31 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 34 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 211 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 84 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 349 SizeOfPredicates, 8 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 36/87 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: 17]: Loop Invariant Derived loop invariant: ((1 <= (x + 1) % 2 && x % 2 == y % 2) || x == 0) || ((4294967295 + x) % 4294967296 < 99 && !(y % 2 == 0)) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 02:34:03,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE