./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_seq_init_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/array-examples/standard_seq_init_ground.i -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 eab386bb7401f51a7807d88da5762f33f54a558b2c1945526724b989e81d1d36 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-16 23:11:34,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 23:11:34,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 23:11:34,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 23:11:34,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 23:11:34,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 23:11:34,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 23:11:34,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 23:11:34,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 23:11:34,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 23:11:34,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 23:11:34,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 23:11:34,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 23:11:34,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 23:11:34,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 23:11:34,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 23:11:34,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 23:11:34,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 23:11:34,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 23:11:34,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 23:11:34,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 23:11:34,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 23:11:34,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 23:11:34,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 23:11:34,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 23:11:34,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 23:11:34,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 23:11:34,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 23:11:34,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 23:11:34,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 23:11:34,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 23:11:34,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 23:11:34,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 23:11:34,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 23:11:34,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 23:11:34,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 23:11:34,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 23:11:34,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 23:11:34,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 23:11:34,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 23:11:34,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 23:11:34,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 23:11:34,851 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 23:11:34,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 23:11:34,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 23:11:34,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 23:11:34,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 23:11:34,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 23:11:34,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 23:11:34,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 23:11:34,854 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 23:11:34,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 23:11:34,855 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 23:11:34,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 23:11:34,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 23:11:34,856 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 23:11:34,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:11:34,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 23:11:34,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 23:11:34,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 23:11:34,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 23:11:34,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 23:11:34,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 23:11:34,859 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 23:11:34,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 23:11:34,859 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 23:11:34,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eab386bb7401f51a7807d88da5762f33f54a558b2c1945526724b989e81d1d36 [2023-02-16 23:11:35,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 23:11:35,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 23:11:35,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 23:11:35,119 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 23:11:35,119 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 23:11:35,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_seq_init_ground.i [2023-02-16 23:11:36,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 23:11:36,331 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 23:11:36,332 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_seq_init_ground.i [2023-02-16 23:11:36,336 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a58ff71c/efa200d9cd784a77bc360819b1157e2e/FLAGedba9206f [2023-02-16 23:11:36,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a58ff71c/efa200d9cd784a77bc360819b1157e2e [2023-02-16 23:11:36,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 23:11:36,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 23:11:36,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 23:11:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 23:11:36,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 23:11:36,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c1cd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36, skipping insertion in model container [2023-02-16 23:11:36,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 23:11:36,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 23:11:36,496 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/array-examples/standard_seq_init_ground.i[817,830] [2023-02-16 23:11:36,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:11:36,514 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 23:11:36,541 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/array-examples/standard_seq_init_ground.i[817,830] [2023-02-16 23:11:36,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:11:36,574 INFO L208 MainTranslator]: Completed translation [2023-02-16 23:11:36,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36 WrapperNode [2023-02-16 23:11:36,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 23:11:36,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 23:11:36,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 23:11:36,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 23:11:36,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,613 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2023-02-16 23:11:36,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 23:11:36,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 23:11:36,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 23:11:36,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 23:11:36,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 23:11:36,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 23:11:36,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 23:11:36,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 23:11:36,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (1/1) ... [2023-02-16 23:11:36,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:11:36,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:36,682 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) [2023-02-16 23:11:36,698 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 [2023-02-16 23:11:36,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 23:11:36,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 23:11:36,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 23:11:36,764 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 23:11:36,766 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 23:11:36,862 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 23:11:36,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 23:11:36,866 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 23:11:36,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:11:36 BoogieIcfgContainer [2023-02-16 23:11:36,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 23:11:36,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 23:11:36,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 23:11:36,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 23:11:36,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 11:11:36" (1/3) ... [2023-02-16 23:11:36,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ea7a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:11:36, skipping insertion in model container [2023-02-16 23:11:36,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:11:36" (2/3) ... [2023-02-16 23:11:36,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ea7a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:11:36, skipping insertion in model container [2023-02-16 23:11:36,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:11:36" (3/3) ... [2023-02-16 23:11:36,874 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.i [2023-02-16 23:11:36,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 23:11:36,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 23:11:36,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 23:11:36,921 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;@595c28e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 23:11:36,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 23:11:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) 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) [2023-02-16 23:11:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 23:11:36,937 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:36,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:36,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1808850128, now seen corresponding path program 1 times [2023-02-16 23:11:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:36,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239747139] [2023-02-16 23:11:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239747139] [2023-02-16 23:11:37,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239747139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 23:11:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 23:11:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 23:11:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158654804] [2023-02-16 23:11:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 23:11:37,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 23:11:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:11:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 23:11:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 23:11:37,156 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-16 23:11:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:11:37,177 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-02-16 23:11:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 23:11:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 7 [2023-02-16 23:11:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:11:37,185 INFO L225 Difference]: With dead ends: 26 [2023-02-16 23:11:37,185 INFO L226 Difference]: Without dead ends: 11 [2023-02-16 23:11:37,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 23:11:37,190 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:11:37,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:11:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-16 23:11:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-16 23:11:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2023-02-16 23:11:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-02-16 23:11:37,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-02-16 23:11:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:11:37,215 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-02-16 23:11:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-16 23:11:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-02-16 23:11:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 23:11:37,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:37,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:37,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 23:11:37,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash 291255051, now seen corresponding path program 1 times [2023-02-16 23:11:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827423097] [2023-02-16 23:11:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:37,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827423097] [2023-02-16 23:11:37,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827423097] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:11:37,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684522432] [2023-02-16 23:11:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:37,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:37,277 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) [2023-02-16 23:11:37,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 23:11:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:37,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 23:11:37,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:11:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:11:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684522432] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:11:37,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:11:37,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-16 23:11:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786733542] [2023-02-16 23:11:37,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:11:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 23:11:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:11:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 23:11:37,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-16 23:11:37,453 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2023-02-16 23:11:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:11:37,487 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-02-16 23:11:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 23:11:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-16 23:11:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:11:37,488 INFO L225 Difference]: With dead ends: 21 [2023-02-16 23:11:37,488 INFO L226 Difference]: Without dead ends: 14 [2023-02-16 23:11:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-16 23:11:37,490 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:11:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:11:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-16 23:11:37,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-16 23:11:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-16 23:11:37,495 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2023-02-16 23:11:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:11:37,495 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-16 23:11:37,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2023-02-16 23:11:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-16 23:11:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 23:11:37,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:37,496 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:37,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 23:11:37,697 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 [2023-02-16 23:11:37,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash 521278352, now seen corresponding path program 2 times [2023-02-16 23:11:37,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:37,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362534195] [2023-02-16 23:11:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:37,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362534195] [2023-02-16 23:11:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362534195] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:11:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040111419] [2023-02-16 23:11:37,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 23:11:37,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:37,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:37,834 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) [2023-02-16 23:11:37,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 23:11:37,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 23:11:37,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:11:37,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 23:11:37,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:11:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:11:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:37,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040111419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:11:37,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:11:37,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-16 23:11:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296085264] [2023-02-16 23:11:37,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:11:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 23:11:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:11:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 23:11:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-16 23:11:37,956 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:11:37,971 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2023-02-16 23:11:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 23:11:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-16 23:11:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:11:37,972 INFO L225 Difference]: With dead ends: 27 [2023-02-16 23:11:37,972 INFO L226 Difference]: Without dead ends: 20 [2023-02-16 23:11:37,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-16 23:11:37,982 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:11:37,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:11:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-16 23:11:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-16 23:11:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-02-16 23:11:37,989 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2023-02-16 23:11:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:11:37,990 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-02-16 23:11:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-02-16 23:11:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 23:11:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:37,992 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:38,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 23:11:38,197 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 [2023-02-16 23:11:38,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1061727824, now seen corresponding path program 3 times [2023-02-16 23:11:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995252061] [2023-02-16 23:11:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:38,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:38,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995252061] [2023-02-16 23:11:38,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995252061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:11:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420063169] [2023-02-16 23:11:38,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 23:11:38,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:38,388 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) [2023-02-16 23:11:38,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 23:11:38,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-16 23:11:38,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:11:38,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 23:11:38,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:11:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:38,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:11:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:38,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420063169] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:11:38,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:11:38,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-16 23:11:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655698425] [2023-02-16 23:11:38,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:11:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 23:11:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:11:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 23:11:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-16 23:11:38,722 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:11:38,744 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2023-02-16 23:11:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 23:11:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-16 23:11:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:11:38,745 INFO L225 Difference]: With dead ends: 39 [2023-02-16 23:11:38,745 INFO L226 Difference]: Without dead ends: 32 [2023-02-16 23:11:38,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-16 23:11:38,746 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:11:38,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:11:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-16 23:11:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-16 23:11:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-02-16 23:11:38,750 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2023-02-16 23:11:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:11:38,750 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-02-16 23:11:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-02-16 23:11:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 23:11:38,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:38,752 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:38,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 23:11:38,956 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 [2023-02-16 23:11:38,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash 265717232, now seen corresponding path program 4 times [2023-02-16 23:11:38,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:38,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338572583] [2023-02-16 23:11:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:39,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:39,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338572583] [2023-02-16 23:11:39,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338572583] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:11:39,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897765494] [2023-02-16 23:11:39,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 23:11:39,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:39,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:39,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 23:11:39,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 23:11:39,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 23:11:39,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:11:39,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 23:11:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:11:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:39,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:11:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:40,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897765494] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:11:40,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:11:40,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-16 23:11:40,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581975305] [2023-02-16 23:11:40,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:11:40,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-16 23:11:40,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:11:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-16 23:11:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 23:11:40,176 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:11:40,217 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2023-02-16 23:11:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-16 23:11:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2023-02-16 23:11:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:11:40,218 INFO L225 Difference]: With dead ends: 63 [2023-02-16 23:11:40,218 INFO L226 Difference]: Without dead ends: 56 [2023-02-16 23:11:40,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 12 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 23:11:40,220 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:11:40,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:11:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-16 23:11:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-16 23:11:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-02-16 23:11:40,225 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 29 [2023-02-16 23:11:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:11:40,225 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-02-16 23:11:40,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:11:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-02-16 23:11:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-16 23:11:40,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:11:40,226 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:11:40,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 23:11:40,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:40,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:11:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:11:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1684000368, now seen corresponding path program 5 times [2023-02-16 23:11:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:11:40,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637197625] [2023-02-16 23:11:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:11:40,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:11:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:11:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:11:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:11:41,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637197625] [2023-02-16 23:11:41,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637197625] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:11:41,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525193064] [2023-02-16 23:11:41,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 23:11:41,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:11:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:11:41,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 23:11:41,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 23:12:00,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-02-16 23:12:00,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:12:00,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 23:12:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:12:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:12:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:12:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:12:03,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525193064] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:12:03,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:12:03,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2023-02-16 23:12:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493517508] [2023-02-16 23:12:03,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:12:03,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-16 23:12:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:12:03,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-16 23:12:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-02-16 23:12:03,358 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:12:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:12:03,465 INFO L93 Difference]: Finished difference Result 111 states and 160 transitions. [2023-02-16 23:12:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-16 23:12:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 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 53 [2023-02-16 23:12:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:12:03,468 INFO L225 Difference]: With dead ends: 111 [2023-02-16 23:12:03,468 INFO L226 Difference]: Without dead ends: 104 [2023-02-16 23:12:03,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 12 SyntacticMatches, 46 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-02-16 23:12:03,472 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 23:12:03,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 23:12:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-16 23:12:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-02-16 23:12:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:12:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2023-02-16 23:12:03,486 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 53 [2023-02-16 23:12:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:12:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2023-02-16 23:12:03,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:12:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2023-02-16 23:12:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-16 23:12:03,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:12:03,490 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:12:03,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 23:12:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:12:03,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:12:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:12:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -765599888, now seen corresponding path program 6 times [2023-02-16 23:12:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:12:03,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880879378] [2023-02-16 23:12:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:12:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:12:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:12:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:12:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:12:07,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880879378] [2023-02-16 23:12:07,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880879378] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:12:07,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628185157] [2023-02-16 23:12:07,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 23:12:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:12:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:12:07,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 23:12:07,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process