./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/simple_1-2.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 7922cbf7e8f9780d3e8e620cf25362ae75252990a9db15252dbdfd9dda70dad0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 11:27:29,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:27:29,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:27:29,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:27:29,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:27:29,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:27:29,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:27:29,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:27:29,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:27:29,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:27:29,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:27:29,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:27:29,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:27:29,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:27:29,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:27:29,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:27:29,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:27:29,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:27:29,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:27:29,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:27:29,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:27:29,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:27:29,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:27:29,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:27:29,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:27:29,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:27:29,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:27:29,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:27:29,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:27:29,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:27:29,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:27:29,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:27:29,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:27:29,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:27:29,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:27:29,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:27:29,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:27:29,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:27:29,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:27:29,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:27:29,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:27:29,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:27:29,911 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:27:29,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:27:29,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:27:29,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:27:29,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:27:29,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:27:29,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:27:29,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:27:29,914 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:27:29,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:27:29,915 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:27:29,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:27:29,917 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:27:29,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:27:29,917 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:27:29,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:27:29,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:27:29,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:27:29,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:27:29,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:27:29,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:27:29,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:27:29,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:27:29,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:27:29,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:27:29,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:27:29,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:27:29,919 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:27:29,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:27:29,920 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:27:29,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7922cbf7e8f9780d3e8e620cf25362ae75252990a9db15252dbdfd9dda70dad0 [2023-02-14 11:27:30,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:27:30,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:27:30,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:27:30,127 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:27:30,127 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:27:30,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-14 11:27:31,269 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:27:31,451 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:27:31,452 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-14 11:27:31,461 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edad084be/33a9d36b74e64f1b9a6563dee1a3eddc/FLAGa4fd70cdf [2023-02-14 11:27:31,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edad084be/33a9d36b74e64f1b9a6563dee1a3eddc [2023-02-14 11:27:31,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:27:31,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:27:31,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:27:31,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:27:31,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:27:31,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511a3959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31, skipping insertion in model container [2023-02-14 11:27:31,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:27:31,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:27:31,602 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/loop-acceleration/simple_1-2.c[322,335] [2023-02-14 11:27:31,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:27:31,616 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:27:31,625 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/loop-acceleration/simple_1-2.c[322,335] [2023-02-14 11:27:31,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:27:31,637 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:27:31,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31 WrapperNode [2023-02-14 11:27:31,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:27:31,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:27:31,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:27:31,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:27:31,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,658 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2023-02-14 11:27:31,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:27:31,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:27:31,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:27:31,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:27:31,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:27:31,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:27:31,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:27:31,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:27:31,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (1/1) ... [2023-02-14 11:27:31,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:27:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:27:31,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 11:27:31,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 11:27:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:27:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:27:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:27:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:27:31,766 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:27:31,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:27:31,838 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:27:31,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:27:31,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 11:27:31,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:27:31 BoogieIcfgContainer [2023-02-14 11:27:31,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:27:31,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:27:31,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:27:31,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:27:31,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:27:31" (1/3) ... [2023-02-14 11:27:31,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf2dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:27:31, skipping insertion in model container [2023-02-14 11:27:31,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:27:31" (2/3) ... [2023-02-14 11:27:31,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf2dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:27:31, skipping insertion in model container [2023-02-14 11:27:31,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:27:31" (3/3) ... [2023-02-14 11:27:31,850 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_1-2.c [2023-02-14 11:27:31,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:27:31,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 11:27:31,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:27:31,932 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;@35108fe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:27:31,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 11:27:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 11:27:31,944 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:27:31,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 11:27:31,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:27:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:27:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-02-14 11:27:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:27:31,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245015242] [2023-02-14 11:27:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:27:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:27:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:27:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:32,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:27:32,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245015242] [2023-02-14 11:27:32,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245015242] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:27:32,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:27:32,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 11:27:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255793288] [2023-02-14 11:27:32,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:27:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 11:27:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:27:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 11:27:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 11:27:32,290 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) 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) [2023-02-14 11:27:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:27:32,331 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-02-14 11:27:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 11:27:32,333 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 [2023-02-14 11:27:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:27:32,338 INFO L225 Difference]: With dead ends: 20 [2023-02-14 11:27:32,352 INFO L226 Difference]: Without dead ends: 8 [2023-02-14 11:27:32,355 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 [2023-02-14 11:27:32,358 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:27:32,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:27:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-14 11:27:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-14 11:27:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-14 11:27:32,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-14 11:27:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:27:32,389 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-14 11:27:32,389 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) [2023-02-14 11:27:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-14 11:27:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 11:27:32,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:27:32,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:27:32,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 11:27:32,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:27:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:27:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-02-14 11:27:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:27:32,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070805343] [2023-02-14 11:27:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:27:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:27:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:27:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:27:32,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070805343] [2023-02-14 11:27:32,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070805343] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:27:32,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557803867] [2023-02-14 11:27:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:27:32,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:27:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:27:32,549 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) [2023-02-14 11:27:32,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 11:27:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:27:32,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 11:27:32,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:27:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:32,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:27:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:32,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557803867] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:27:32,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:27:32,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 11:27:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429854002] [2023-02-14 11:27:32,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:27:32,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 11:27:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:27:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 11:27:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-14 11:27:32,687 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2023-02-14 11:27:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:27:32,719 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-02-14 11:27:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 11:27:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 7 [2023-02-14 11:27:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:27:32,720 INFO L225 Difference]: With dead ends: 15 [2023-02-14 11:27:32,721 INFO L226 Difference]: Without dead ends: 11 [2023-02-14 11:27:32,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-14 11:27:32,722 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:27:32,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:27:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-14 11:27:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-14 11:27:32,726 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) [2023-02-14 11:27:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-14 11:27:32,727 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-02-14 11:27:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:27:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-14 11:27:32,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2023-02-14 11:27:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-14 11:27:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 11:27:32,728 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:27:32,729 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-02-14 11:27:32,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 11:27:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:27:32,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:27:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:27:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2023-02-14 11:27:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:27:32,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472257294] [2023-02-14 11:27:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:27:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:27:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:27:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:27:33,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472257294] [2023-02-14 11:27:33,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472257294] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:27:33,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850444923] [2023-02-14 11:27:33,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 11:27:33,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:27:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:27:33,157 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) [2023-02-14 11:27:33,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 11:27:33,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 11:27:33,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:27:33,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 11:27:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:27:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:33,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:27:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:33,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850444923] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:27:33,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:27:33,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-14 11:27:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268575676] [2023-02-14 11:27:33,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:27:33,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 11:27:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:27:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 11:27:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-14 11:27:33,366 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:27:33,683 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-02-14 11:27:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 11:27:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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 [2023-02-14 11:27:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:27:33,685 INFO L225 Difference]: With dead ends: 21 [2023-02-14 11:27:33,685 INFO L226 Difference]: Without dead ends: 17 [2023-02-14 11:27:33,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-02-14 11:27:33,686 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:27:33,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:27:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-14 11:27:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-14 11:27:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-02-14 11:27:33,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-02-14 11:27:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:27:33,692 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-02-14 11:27:33,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-02-14 11:27:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 11:27:33,695 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:27:33,696 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-02-14 11:27:33,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 11:27:33,896 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,SelfDestructingSolverStorable2 [2023-02-14 11:27:33,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:27:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:27:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times [2023-02-14 11:27:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:27:33,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195951981] [2023-02-14 11:27:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:27:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:27:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:27:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:27:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195951981] [2023-02-14 11:27:34,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195951981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:27:34,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911361402] [2023-02-14 11:27:34,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 11:27:34,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:27:34,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:27:34,193 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) [2023-02-14 11:27:34,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 11:27:34,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-14 11:27:34,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:27:34,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-14 11:27:34,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:27:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:27:34,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:27:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-14 11:27:34,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911361402] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 11:27:34,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:27:34,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 14] total 17 [2023-02-14 11:27:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148387643] [2023-02-14 11:27:34,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:27:34,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:27:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:27:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:27:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-14 11:27:34,443 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:27:34,461 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-02-14 11:27:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:27:34,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 11:27:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:27:34,462 INFO L225 Difference]: With dead ends: 17 [2023-02-14 11:27:34,462 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 11:27:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-02-14 11:27:34,464 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:27:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:27:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 11:27:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 11:27:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 11:27:34,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-02-14 11:27:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:27:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 11:27:34,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:27:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 11:27:34,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 11:27:34,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 11:27:34,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 11:27:34,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:27:34,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 11:27:34,689 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 11:27:34,690 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 15 17) the Hoare annotation is: (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) [2023-02-14 11:27:34,695 INFO L899 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2023-02-14 11:27:34,695 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 11:27:34,695 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-14 11:27:34,695 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 11:27:34,695 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 11:27:34,696 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-02-14 11:27:34,696 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 20) no Hoare annotation was computed. [2023-02-14 11:27:34,696 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-14 11:27:34,696 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2023-02-14 11:27:34,698 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-02-14 11:27:34,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 11:27:34,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:27:34 BoogieIcfgContainer [2023-02-14 11:27:34,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 11:27:34,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 11:27:34,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 11:27:34,710 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 11:27:34,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:27:31" (3/4) ... [2023-02-14 11:27:34,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 11:27:34,720 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-14 11:27:34,720 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 11:27:34,720 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 11:27:34,720 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 11:27:34,739 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 11:27:34,739 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 11:27:34,740 INFO L158 Benchmark]: Toolchain (without parser) took 3261.57ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 123.1MB in the beginning and 119.5MB in the end (delta: 3.6MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,740 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:27:34,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.57ms. Allocated memory is still 153.1MB. Free memory was 122.7MB in the beginning and 113.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.87ms. Allocated memory is still 153.1MB. Free memory was 113.0MB in the beginning and 111.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:27:34,741 INFO L158 Benchmark]: Boogie Preprocessor took 11.71ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 110.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,741 INFO L158 Benchmark]: RCFGBuilder took 172.98ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 102.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,742 INFO L158 Benchmark]: TraceAbstraction took 2864.02ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 101.4MB in the beginning and 122.6MB in the end (delta: -21.3MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,742 INFO L158 Benchmark]: Witness Printer took 29.59ms. Allocated memory is still 184.5MB. Free memory was 121.6MB in the beginning and 119.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:27:34,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.57ms. Allocated memory is still 153.1MB. Free memory was 122.7MB in the beginning and 113.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.87ms. Allocated memory is still 153.1MB. Free memory was 113.0MB in the beginning and 111.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.71ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 110.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 172.98ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 102.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2864.02ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 101.4MB in the beginning and 122.6MB in the end (delta: -21.3MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 29.59ms. Allocated memory is still 184.5MB. Free memory was 121.6MB in the beginning and 119.5MB 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: 7]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 24 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 181 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 4 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 55/198 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: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x % 2 % 4294967296 == 0 RESULT: Ultimate proved your program to be correct! [2023-02-14 11:27:34,758 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