./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/nla-digbench-scaling/hard2_valuebound1.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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:26:26,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:26:26,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:26:26,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:26:26,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:26:26,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:26:26,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:26:26,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:26:26,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:26:26,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:26:26,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:26:26,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:26:26,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:26:26,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:26:26,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:26:26,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:26:26,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:26:26,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:26:26,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:26:26,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:26:26,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:26:26,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:26:26,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:26:26,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:26:26,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:26:26,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:26:26,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:26:26,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:26:26,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:26:26,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:26:26,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:26:26,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:26:26,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:26:26,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:26:26,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:26:26,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:26:26,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:26:26,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:26:26,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:26:26,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:26:26,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:26:26,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:26:26,714 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:26:26,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:26:26,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:26:26,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:26:26,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:26:26,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:26:26,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:26:26,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:26:26,716 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:26:26,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:26:26,717 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:26:26,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:26:26,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:26:26,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:26:26,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:26:26,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:26:26,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:26:26,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:26:26,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:26:26,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:26:26,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:26:26,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:26:26,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:26:26,721 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:26:26,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2023-02-16 02:26:26,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:26:26,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:26:26,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:26:26,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:26:26,922 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:26:26,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-02-16 02:26:27,817 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:26:27,963 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:26:27,963 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-02-16 02:26:27,967 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa13dc20/56723422bab6405a834aa65013f5ea8f/FLAGe7f6e6629 [2023-02-16 02:26:27,976 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa13dc20/56723422bab6405a834aa65013f5ea8f [2023-02-16 02:26:27,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:26:27,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:26:27,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:26:27,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:26:27,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:26:27,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:26:27" (1/1) ... [2023-02-16 02:26:27,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606d2f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:27, skipping insertion in model container [2023-02-16 02:26:27,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:26:27" (1/1) ... [2023-02-16 02:26:27,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:26:27,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:26:28,092 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/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2023-02-16 02:26:28,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:26:28,106 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:26:28,114 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/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2023-02-16 02:26:28,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:26:28,125 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:26:28,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28 WrapperNode [2023-02-16 02:26:28,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:26:28,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:26:28,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:26:28,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:26:28,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,151 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-02-16 02:26:28,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:26:28,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:26:28,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:26:28,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:26:28,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,181 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:26:28,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:26:28,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:26:28,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:26:28,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (1/1) ... [2023-02-16 02:26:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:26:28,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:28,211 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 02:26:28,232 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 02:26:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:26:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:26:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:26:28,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:26:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:26:28,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:26:28,285 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:26:28,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:26:28,381 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:26:28,385 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:26:28,388 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 02:26:28,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:26:28 BoogieIcfgContainer [2023-02-16 02:26:28,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:26:28,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:26:28,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:26:28,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:26:28,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:26:27" (1/3) ... [2023-02-16 02:26:28,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72114c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:26:28, skipping insertion in model container [2023-02-16 02:26:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:26:28" (2/3) ... [2023-02-16 02:26:28,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72114c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:26:28, skipping insertion in model container [2023-02-16 02:26:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:26:28" (3/3) ... [2023-02-16 02:26:28,404 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2023-02-16 02:26:28,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:26:28,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:26:28,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:26:28,475 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;@2194ba50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:26:28,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:26:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:26:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:26:28,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:28,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:28,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:28,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2023-02-16 02:26:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:28,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093632593] [2023-02-16 02:26:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:28,636 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 02:26:28,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093632593] [2023-02-16 02:26:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093632593] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:26:28,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:26:28,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:26:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249670389] [2023-02-16 02:26:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:26:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:26:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:26:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:26:28,662 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:26:28,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:28,676 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2023-02-16 02:26:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:26:28,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:26:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:28,682 INFO L225 Difference]: With dead ends: 49 [2023-02-16 02:26:28,682 INFO L226 Difference]: Without dead ends: 22 [2023-02-16 02:26:28,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:26:28,686 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:28,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:26:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-16 02:26:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-16 02:26:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:26:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-02-16 02:26:28,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-02-16 02:26:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-16 02:26:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:26:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-02-16 02:26:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:26:28,710 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:28,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 02:26:28,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2023-02-16 02:26:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274189118] [2023-02-16 02:26:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:28,837 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 02:26:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:28,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274189118] [2023-02-16 02:26:28,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274189118] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:26:28,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:26:28,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:26:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270736407] [2023-02-16 02:26:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:26:28,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:26:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:26:28,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:26:28,841 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:26:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:28,878 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-02-16 02:26:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:26:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:26:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:28,883 INFO L225 Difference]: With dead ends: 35 [2023-02-16 02:26:28,883 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 02:26:28,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:26:28,885 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 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 02:26:28,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:26:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 02:26:28,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2023-02-16 02:26:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:26:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-02-16 02:26:28,907 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-02-16 02:26:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:28,907 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-02-16 02:26:28,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:26:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-02-16 02:26:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 02:26:28,908 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:28,908 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 02:26:28,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2023-02-16 02:26:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719043544] [2023-02-16 02:26:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:26:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:26:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:29,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719043544] [2023-02-16 02:26:29,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719043544] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:26:29,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:26:29,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:26:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702949045] [2023-02-16 02:26:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:26:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:26:29,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:26:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:26:29,020 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:26:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:29,078 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-02-16 02:26:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:26:29,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-16 02:26:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:29,079 INFO L225 Difference]: With dead ends: 39 [2023-02-16 02:26:29,079 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 02:26:29,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:26:29,080 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:29,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:26:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 02:26:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-02-16 02:26:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:26:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-16 02:26:29,103 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-02-16 02:26:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-16 02:26:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:26:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-16 02:26:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:26:29,104 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:29,104 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 02:26:29,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2023-02-16 02:26:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:29,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829146033] [2023-02-16 02:26:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:29,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:29,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933294882] [2023-02-16 02:26:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:29,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:29,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:29,117 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 02:26:29,117 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 02:26:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:29,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:26:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:26:29,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:26:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:26:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829146033] [2023-02-16 02:26:29,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933294882] [2023-02-16 02:26:29,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933294882] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:26:29,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:26:29,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 02:26:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9172350] [2023-02-16 02:26:29,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:26:29,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:26:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:26:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:26:29,362 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:26:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:29,506 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-16 02:26:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:26:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-16 02:26:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:29,510 INFO L225 Difference]: With dead ends: 65 [2023-02-16 02:26:29,510 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:26:29,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:26:29,519 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:29,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 48 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:26:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:26:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-16 02:26:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 02:26:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-02-16 02:26:29,538 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2023-02-16 02:26:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:29,538 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-02-16 02:26:29,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:26:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-02-16 02:26:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 02:26:29,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:29,539 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:29,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:26:29,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:29,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2023-02-16 02:26:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:29,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477412418] [2023-02-16 02:26:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:29,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:29,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170786388] [2023-02-16 02:26:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:29,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:29,750 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 02:26:29,752 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 02:26:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:29,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 02:26:29,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:26:29,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:26:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:26:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477412418] [2023-02-16 02:26:29,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170786388] [2023-02-16 02:26:29,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170786388] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:26:29,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:26:29,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 02:26:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818213386] [2023-02-16 02:26:29,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:26:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 02:26:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 02:26:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:26:29,934 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:26:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:30,040 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-02-16 02:26:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:26:30,041 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-02-16 02:26:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:30,042 INFO L225 Difference]: With dead ends: 66 [2023-02-16 02:26:30,042 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 02:26:30,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:26:30,043 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:30,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 67 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:26:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 02:26:30,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-02-16 02:26:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-16 02:26:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-02-16 02:26:30,058 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2023-02-16 02:26:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:30,058 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-02-16 02:26:30,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:26:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-02-16 02:26:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 02:26:30,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:30,061 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:30,068 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 02:26:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:30,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2023-02-16 02:26:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597461912] [2023-02-16 02:26:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:30,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520189081] [2023-02-16 02:26:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:30,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:30,272 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 02:26:30,274 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 02:26:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:30,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-16 02:26:30,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-16 02:26:30,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:26:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-16 02:26:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597461912] [2023-02-16 02:26:30,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520189081] [2023-02-16 02:26:30,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520189081] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:26:30,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:26:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-16 02:26:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602340127] [2023-02-16 02:26:30,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:26:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 02:26:30,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 02:26:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:26:30,979 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-16 02:26:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:33,265 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2023-02-16 02:26:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:26:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2023-02-16 02:26:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:33,266 INFO L225 Difference]: With dead ends: 142 [2023-02-16 02:26:33,266 INFO L226 Difference]: Without dead ends: 111 [2023-02-16 02:26:33,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-16 02:26:33,267 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:33,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 116 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 02:26:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-16 02:26:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2023-02-16 02:26:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-16 02:26:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2023-02-16 02:26:33,292 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2023-02-16 02:26:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:33,293 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2023-02-16 02:26:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-16 02:26:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2023-02-16 02:26:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-16 02:26:33,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:33,294 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:33,307 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 02:26:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:33,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2023-02-16 02:26:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551291062] [2023-02-16 02:26:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:33,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:33,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601678541] [2023-02-16 02:26:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:33,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:33,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:33,507 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 02:26:33,509 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 02:26:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 02:26:33,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 02:26:33,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:26:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 02:26:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551291062] [2023-02-16 02:26:33,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601678541] [2023-02-16 02:26:33,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601678541] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:26:33,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:26:33,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-16 02:26:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086918803] [2023-02-16 02:26:33,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:26:33,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 02:26:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 02:26:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-02-16 02:26:34,000 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-16 02:26:35,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 02:26:38,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 02:26:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:38,276 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2023-02-16 02:26:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 02:26:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2023-02-16 02:26:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:38,277 INFO L225 Difference]: With dead ends: 161 [2023-02-16 02:26:38,277 INFO L226 Difference]: Without dead ends: 123 [2023-02-16 02:26:38,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-02-16 02:26:38,278 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 103 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-02-16 02:26:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-16 02:26:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2023-02-16 02:26:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-16 02:26:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-02-16 02:26:38,297 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2023-02-16 02:26:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:38,297 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-02-16 02:26:38,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-16 02:26:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-02-16 02:26:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 02:26:38,298 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:38,299 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:38,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 02:26:38,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:38,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2023-02-16 02:26:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:38,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246527114] [2023-02-16 02:26:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:38,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:38,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266393214] [2023-02-16 02:26:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:38,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:38,511 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 02:26:38,513 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 02:26:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:38,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:26:38,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-16 02:26:38,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:26:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-16 02:26:38,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246527114] [2023-02-16 02:26:38,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266393214] [2023-02-16 02:26:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266393214] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:26:38,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:26:38,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 02:26:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437536607] [2023-02-16 02:26:38,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:26:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:26:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:26:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:26:38,883 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-16 02:26:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:39,065 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2023-02-16 02:26:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 02:26:39,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 72 [2023-02-16 02:26:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:39,067 INFO L225 Difference]: With dead ends: 120 [2023-02-16 02:26:39,067 INFO L226 Difference]: Without dead ends: 93 [2023-02-16 02:26:39,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:26:39,068 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:39,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 187 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:26:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-16 02:26:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-16 02:26:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 02:26:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2023-02-16 02:26:39,089 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 72 [2023-02-16 02:26:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:39,091 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2023-02-16 02:26:39,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-16 02:26:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2023-02-16 02:26:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 02:26:39,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:39,092 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:39,098 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 02:26:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:39,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2023-02-16 02:26:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:39,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057436625] [2023-02-16 02:26:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:39,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:39,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:39,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606664937] [2023-02-16 02:26:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:39,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:39,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:39,304 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 02:26:39,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:26:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:26:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 02:26:39,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-16 02:26:39,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:26:39,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057436625] [2023-02-16 02:26:39,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606664937] [2023-02-16 02:26:39,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606664937] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:26:39,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:26:39,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:26:39,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141324393] [2023-02-16 02:26:39,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:26:39,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:26:39,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:26:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:26:39,440 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 02:26:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:39,528 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2023-02-16 02:26:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:26:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2023-02-16 02:26:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:39,530 INFO L225 Difference]: With dead ends: 125 [2023-02-16 02:26:39,530 INFO L226 Difference]: Without dead ends: 88 [2023-02-16 02:26:39,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:26:39,531 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:39,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:26:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-16 02:26:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2023-02-16 02:26:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-16 02:26:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2023-02-16 02:26:39,547 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 86 [2023-02-16 02:26:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:39,547 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2023-02-16 02:26:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 02:26:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2023-02-16 02:26:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 02:26:39,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:26:39,548 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:39,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:26:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:39,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:26:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:26:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2023-02-16 02:26:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:26:39,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320778463] [2023-02-16 02:26:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:26:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:26:39,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:26:39,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951510976] [2023-02-16 02:26:39,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:26:39,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:39,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:26:39,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:26:39,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:26:39,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:26:39,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:26:39,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 02:26:39,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:26:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-02-16 02:26:39,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:26:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:26:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320778463] [2023-02-16 02:26:39,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:26:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951510976] [2023-02-16 02:26:39,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951510976] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:26:39,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:26:39,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:26:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184607728] [2023-02-16 02:26:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:26:39,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:26:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:26:39,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:26:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:26:39,864 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-16 02:26:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:26:39,945 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2023-02-16 02:26:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:26:39,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2023-02-16 02:26:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:26:39,947 INFO L225 Difference]: With dead ends: 79 [2023-02-16 02:26:39,947 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 02:26:39,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:26:39,948 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:26:39,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:26:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 02:26:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 02:26:39,949 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) [2023-02-16 02:26:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 02:26:39,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2023-02-16 02:26:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:26:39,950 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 02:26:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-16 02:26:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 02:26:39,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 02:26:39,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:26:39,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:26:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:26:40,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 02:26:41,740 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-02-16 02:26:41,740 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| 2) (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 (= |ULTIMATE.start_main_~B~0#1| 1)))) [2023-02-16 02:26:41,740 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-16 02:26:41,740 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) [2023-02-16 02:26:41,740 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 61) the Hoare annotation is: true [2023-02-16 02:26:41,740 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 1) .cse3) (and (= 0 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2023-02-16 02:26:41,740 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 02:26:41,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 02:26:41,740 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| 2) (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 (= |ULTIMATE.start_main_~B~0#1| 1)))) [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| 2) (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 (= |ULTIMATE.start_main_~B~0#1| 1)))) [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1))) [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 1) .cse3) (and (= 0 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2023-02-16 02:26:41,741 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-02-16 02:26:41,741 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 1) .cse3) (and (= 0 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2023-02-16 02:26:41,742 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 1) .cse3) (and (= 0 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2023-02-16 02:26:41,742 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-16 02:26:41,742 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-16 02:26:41,742 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-16 02:26:41,742 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-16 02:26:41,742 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-16 02:26:41,742 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 02:26:41,745 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:26:41,746 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:26:41,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:26:41 BoogieIcfgContainer [2023-02-16 02:26:41,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:26:41,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:26:41,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:26:41,762 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:26:41,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:26:28" (3/4) ... [2023-02-16 02:26:41,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 02:26:41,769 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 02:26:41,774 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-16 02:26:41,775 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-16 02:26:41,775 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-16 02:26:41,775 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:26:41,775 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:26:41,796 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:26:41,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:26:41,798 INFO L158 Benchmark]: Toolchain (without parser) took 13820.14ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 89.4MB in the beginning and 76.3MB in the end (delta: 13.1MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,799 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:26:41,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.72ms. Allocated memory is still 134.2MB. Free memory was 89.4MB in the beginning and 78.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.04ms. Allocated memory is still 134.2MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,799 INFO L158 Benchmark]: Boogie Preprocessor took 35.52ms. Allocated memory is still 134.2MB. Free memory was 76.4MB in the beginning and 75.5MB in the end (delta: 903.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:26:41,800 INFO L158 Benchmark]: RCFGBuilder took 210.20ms. Allocated memory is still 134.2MB. Free memory was 75.1MB in the beginning and 64.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,800 INFO L158 Benchmark]: TraceAbstraction took 13362.30ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 63.8MB in the beginning and 79.4MB in the end (delta: -15.7MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,800 INFO L158 Benchmark]: Witness Printer took 36.17ms. Allocated memory is still 211.8MB. Free memory was 78.4MB in the beginning and 76.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:26:41,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.72ms. Allocated memory is still 134.2MB. Free memory was 89.4MB in the beginning and 78.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.04ms. Allocated memory is still 134.2MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.52ms. Allocated memory is still 134.2MB. Free memory was 76.4MB in the beginning and 75.5MB in the end (delta: 903.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.20ms. Allocated memory is still 134.2MB. Free memory was 75.1MB in the beginning and 64.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13362.30ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 63.8MB in the beginning and 79.4MB in the end (delta: -15.7MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. * Witness Printer took 36.17ms. Allocated memory is still 211.8MB. Free memory was 78.4MB in the beginning and 76.3MB 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: 17]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 874 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 588 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1612 IncrementalHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 286 mSDtfsCounter, 1612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 677 GetRequests, 578 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 85 PreInvPairs, 114 NumberOfFragments, 467 HoareAnnotationTreeSize, 85 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 3531 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 4255 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1147 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 1796/1968 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: 44]: Loop Invariant Derived loop invariant: (((((p == 2 && r == A) && q == 0) && d == 2) && d == 2 * B) || ((((q == p && A + d == r + q * B + p * B) && r + B == A) && d == 1) && r + d == A)) || ((((r == A && p == 1) && d == B) && q == 0) && B == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((r == A && p == 1) && q == 0) && B == 1) && A <= 1) && 0 <= A) && d == 1) && cond == 1) || (((((((0 == q && d == p * B) && r == A) && A <= 1) && 0 <= A) && d == 2) && cond == 1) && d == 2 * B) RESULT: Ultimate proved your program to be correct! [2023-02-16 02:26:41,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE