./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.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/egcd-ll.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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:38:32,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:38:32,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:38:32,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:38:32,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:38:32,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:38:32,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:38:32,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:38:32,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:38:32,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:38:32,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:38:32,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:38:32,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:38:32,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:38:32,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:38:32,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:38:32,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:38:32,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:38:32,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:38:32,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:38:32,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:38:32,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:38:32,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:38:32,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:38:32,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:38:32,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:38:32,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:38:32,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:38:32,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:38:32,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:38:32,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:38:32,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:38:32,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:38:32,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:38:32,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:38:32,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:38:32,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:38:32,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:38:32,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:38:32,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:38:32,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:38:32,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:38:32,211 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:38:32,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:38:32,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:38:32,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:38:32,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:38:32,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:38:32,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:38:32,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:38:32,214 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:38:32,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:38:32,215 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:38:32,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:38:32,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:38:32,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:38:32,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:38:32,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:38:32,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:38:32,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:38:32,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:38:32,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:38:32,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:38:32,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:38:32,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:38:32,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:38:32,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:38:32,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:38:32,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:38:32,218 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:38:32,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:38:32,219 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:38:32,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2023-02-16 01:38:32,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:38:32,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:38:32,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:38:32,390 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:38:32,390 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:38:32,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-02-16 01:38:33,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:38:33,421 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:38:33,421 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-02-16 01:38:33,425 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a246df75/d9e8f3999b9344ebb866dd9d9fae907d/FLAG5f7958814 [2023-02-16 01:38:33,434 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a246df75/d9e8f3999b9344ebb866dd9d9fae907d [2023-02-16 01:38:33,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:38:33,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:38:33,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:38:33,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:38:33,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:38:33,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19327780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33, skipping insertion in model container [2023-02-16 01:38:33,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:38:33,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:38:33,560 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/egcd-ll.c[489,502] [2023-02-16 01:38:33,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:38:33,589 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:38:33,597 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/egcd-ll.c[489,502] [2023-02-16 01:38:33,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:38:33,611 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:38:33,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33 WrapperNode [2023-02-16 01:38:33,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:38:33,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:38:33,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:38:33,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:38:33,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,632 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-16 01:38:33,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:38:33,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:38:33,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:38:33,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:38:33,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:38:33,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:38:33,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:38:33,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:38:33,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (1/1) ... [2023-02-16 01:38:33,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:38:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:33,690 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 01:38:33,695 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 01:38:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 01:38:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 01:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:38:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:38:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:38:33,753 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:38:33,754 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:38:33,868 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:38:33,880 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:38:33,881 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 01:38:33,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:38:33 BoogieIcfgContainer [2023-02-16 01:38:33,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:38:33,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:38:33,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:38:33,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:38:33,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:38:33" (1/3) ... [2023-02-16 01:38:33,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d24b256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:38:33, skipping insertion in model container [2023-02-16 01:38:33,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:38:33" (2/3) ... [2023-02-16 01:38:33,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d24b256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:38:33, skipping insertion in model container [2023-02-16 01:38:33,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:38:33" (3/3) ... [2023-02-16 01:38:33,891 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2023-02-16 01:38:33,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:38:33,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:38:33,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:38:33,977 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;@b90f63e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:38:33,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:38:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 01:38:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 01:38:33,986 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:33,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:33,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1991809531, now seen corresponding path program 1 times [2023-02-16 01:38:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736279430] [2023-02-16 01:38:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 01:38:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:34,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-16 01:38:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:38:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:34,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736279430] [2023-02-16 01:38:34,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736279430] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:38:34,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:38:34,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:38:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114060329] [2023-02-16 01:38:34,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:38:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:38:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:38:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:38:34,149 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:38:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:34,172 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-16 01:38:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:38:34,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-16 01:38:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:34,178 INFO L225 Difference]: With dead ends: 55 [2023-02-16 01:38:34,178 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:38:34,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 01:38:34,183 INFO L413 NwaCegarLoop]: 37 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, 37 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 01:38:34,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:38:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:38:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-16 01:38:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 01:38:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-02-16 01:38:34,207 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 18 [2023-02-16 01:38:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:34,207 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-02-16 01:38:34,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:38:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-02-16 01:38:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 01:38:34,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:34,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:38:34,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1662418947, now seen corresponding path program 1 times [2023-02-16 01:38:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:34,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665089264] [2023-02-16 01:38:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:34,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:34,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536394224] [2023-02-16 01:38:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:34,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:34,233 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 01:38:34,242 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 01:38:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:34,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:38:34,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:38:34,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:38:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:34,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665089264] [2023-02-16 01:38:34,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:34,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536394224] [2023-02-16 01:38:34,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536394224] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:38:34,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:38:34,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 01:38:34,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115753835] [2023-02-16 01:38:34,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:38:34,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:38:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:34,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:38:34,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:38:34,367 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:38:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:34,461 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-16 01:38:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:38:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-16 01:38:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:34,462 INFO L225 Difference]: With dead ends: 41 [2023-02-16 01:38:34,462 INFO L226 Difference]: Without dead ends: 39 [2023-02-16 01:38:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-16 01:38:34,463 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 135 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:38:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-16 01:38:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-02-16 01:38:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 01:38:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2023-02-16 01:38:34,474 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 18 [2023-02-16 01:38:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:34,475 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2023-02-16 01:38:34,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:38:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2023-02-16 01:38:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 01:38:34,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:34,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:34,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:38:34,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:34,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1597795282, now seen corresponding path program 1 times [2023-02-16 01:38:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682959945] [2023-02-16 01:38:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:34,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:34,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602490964] [2023-02-16 01:38:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:34,702 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 01:38:34,707 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 01:38:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:34,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:38:34,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:38:34,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:35,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682959945] [2023-02-16 01:38:35,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:35,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602490964] [2023-02-16 01:38:35,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602490964] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:38:35,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:38:35,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-16 01:38:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951742225] [2023-02-16 01:38:35,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:38:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:38:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:38:35,043 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:38:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:35,143 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-02-16 01:38:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:38:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-02-16 01:38:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:35,145 INFO L225 Difference]: With dead ends: 45 [2023-02-16 01:38:35,145 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 01:38:35,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:38:35,146 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:35,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 83 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:38:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 01:38:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-16 01:38:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 01:38:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2023-02-16 01:38:35,153 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 23 [2023-02-16 01:38:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:35,154 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2023-02-16 01:38:35,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:38:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2023-02-16 01:38:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:38:35,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:35,155 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:35,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 01:38:35,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-16 01:38:35,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1369471651, now seen corresponding path program 1 times [2023-02-16 01:38:35,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:35,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464872174] [2023-02-16 01:38:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:35,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:35,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721308238] [2023-02-16 01:38:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:35,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:35,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:35,412 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 01:38:35,414 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 01:38:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:38:35,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 01:38:35,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 01:38:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:35,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464872174] [2023-02-16 01:38:35,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:35,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721308238] [2023-02-16 01:38:35,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721308238] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 01:38:35,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:38:35,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-16 01:38:35,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440321551] [2023-02-16 01:38:35,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:38:35,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:38:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:35,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:38:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:38:35,666 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:38:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:35,722 INFO L93 Difference]: Finished difference Result 67 states and 96 transitions. [2023-02-16 01:38:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:38:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-02-16 01:38:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:35,727 INFO L225 Difference]: With dead ends: 67 [2023-02-16 01:38:35,727 INFO L226 Difference]: Without dead ends: 63 [2023-02-16 01:38:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:38:35,730 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:35,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:38:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-16 01:38:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-16 01:38:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-16 01:38:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2023-02-16 01:38:35,758 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 28 [2023-02-16 01:38:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:35,759 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2023-02-16 01:38:35,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:38:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2023-02-16 01:38:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 01:38:35,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:35,760 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:35,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 01:38:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:35,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:35,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2053294720, now seen corresponding path program 1 times [2023-02-16 01:38:35,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:35,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627681963] [2023-02-16 01:38:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:35,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316554211] [2023-02-16 01:38:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:35,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:35,978 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 01:38:35,980 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 01:38:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:36,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 01:38:36,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 01:38:36,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:38:36,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627681963] [2023-02-16 01:38:36,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316554211] [2023-02-16 01:38:36,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316554211] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:38:36,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:38:36,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:38:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539515500] [2023-02-16 01:38:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:38:36,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:38:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:38:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:38:36,025 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 01:38:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:36,058 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2023-02-16 01:38:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:38:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-02-16 01:38:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:36,059 INFO L225 Difference]: With dead ends: 69 [2023-02-16 01:38:36,059 INFO L226 Difference]: Without dead ends: 67 [2023-02-16 01:38:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 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 01:38:36,060 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 103 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:38:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-16 01:38:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-02-16 01:38:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-16 01:38:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2023-02-16 01:38:36,068 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 34 [2023-02-16 01:38:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:36,068 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2023-02-16 01:38:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 01:38:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2023-02-16 01:38:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 01:38:36,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:36,070 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:36,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:36,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1341957731, now seen corresponding path program 1 times [2023-02-16 01:38:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:36,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218600296] [2023-02-16 01:38:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:36,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:36,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220466251] [2023-02-16 01:38:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:36,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:36,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:36,284 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 01:38:36,286 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 01:38:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:36,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 01:38:36,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 01:38:36,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:36,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218600296] [2023-02-16 01:38:36,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:36,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220466251] [2023-02-16 01:38:36,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220466251] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:38:36,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:38:36,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-16 01:38:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215018691] [2023-02-16 01:38:36,473 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:38:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:38:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-16 01:38:36,473 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 01:38:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:36,553 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2023-02-16 01:38:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:38:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-02-16 01:38:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:36,557 INFO L225 Difference]: With dead ends: 77 [2023-02-16 01:38:36,557 INFO L226 Difference]: Without dead ends: 74 [2023-02-16 01:38:36,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-16 01:38:36,558 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:38:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-16 01:38:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2023-02-16 01:38:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.225) internal successors, (49), 43 states have internal predecessors, (49), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-02-16 01:38:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2023-02-16 01:38:36,582 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 36 [2023-02-16 01:38:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:36,583 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2023-02-16 01:38:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 01:38:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2023-02-16 01:38:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 01:38:36,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:36,584 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:36,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 01:38:36,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:36,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -724890607, now seen corresponding path program 1 times [2023-02-16 01:38:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:36,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63362379] [2023-02-16 01:38:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:36,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:36,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604410492] [2023-02-16 01:38:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:36,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:36,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:36,821 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 01:38:36,823 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 01:38:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:36,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 01:38:36,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 01:38:36,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 01:38:37,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:37,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63362379] [2023-02-16 01:38:37,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:37,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604410492] [2023-02-16 01:38:37,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604410492] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:37,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:37,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-02-16 01:38:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150648557] [2023-02-16 01:38:37,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:37,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 01:38:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 01:38:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:38:37,098 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-16 01:38:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:37,208 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-16 01:38:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 01:38:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2023-02-16 01:38:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:37,209 INFO L225 Difference]: With dead ends: 81 [2023-02-16 01:38:37,209 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 01:38:37,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:38:37,210 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:37,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:38:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 01:38:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-16 01:38:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 01:38:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2023-02-16 01:38:37,219 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 39 [2023-02-16 01:38:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:37,219 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2023-02-16 01:38:37,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-16 01:38:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2023-02-16 01:38:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 01:38:37,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:37,220 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:37,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 01:38:37,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:37,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:37,426 INFO L85 PathProgramCache]: Analyzing trace with hash -641684780, now seen corresponding path program 2 times [2023-02-16 01:38:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:37,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123839476] [2023-02-16 01:38:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:37,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:37,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052282182] [2023-02-16 01:38:37,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:38:37,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:37,452 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 01:38:37,454 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 01:38:37,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:38:37,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:38:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-16 01:38:37,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-16 01:38:37,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-16 01:38:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123839476] [2023-02-16 01:38:37,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052282182] [2023-02-16 01:38:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052282182] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:37,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:37,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-16 01:38:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388399139] [2023-02-16 01:38:37,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 01:38:37,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 01:38:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:38:37,763 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-16 01:38:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:38,149 INFO L93 Difference]: Finished difference Result 103 states and 132 transitions. [2023-02-16 01:38:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 01:38:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 41 [2023-02-16 01:38:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:38,151 INFO L225 Difference]: With dead ends: 103 [2023-02-16 01:38:38,151 INFO L226 Difference]: Without dead ends: 96 [2023-02-16 01:38:38,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-02-16 01:38:38,152 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:38,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 101 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:38:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-16 01:38:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2023-02-16 01:38:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-16 01:38:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2023-02-16 01:38:38,162 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 41 [2023-02-16 01:38:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:38,163 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2023-02-16 01:38:38,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-16 01:38:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2023-02-16 01:38:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-16 01:38:38,164 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:38,164 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:38,179 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 01:38:38,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:38,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1119121909, now seen corresponding path program 1 times [2023-02-16 01:38:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:38,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971580990] [2023-02-16 01:38:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:38,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:38,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755747317] [2023-02-16 01:38:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:38,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:38:38,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:38:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 01:38:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-02-16 01:38:38,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-16 01:38:38,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:38,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971580990] [2023-02-16 01:38:38,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:38,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755747317] [2023-02-16 01:38:38,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755747317] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:38,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:38,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-02-16 01:38:38,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484585895] [2023-02-16 01:38:38,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:38,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 01:38:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 01:38:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-16 01:38:38,727 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-16 01:38:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:39,057 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2023-02-16 01:38:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 01:38:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 54 [2023-02-16 01:38:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:39,058 INFO L225 Difference]: With dead ends: 96 [2023-02-16 01:38:39,058 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:38:39,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-16 01:38:39,059 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:39,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 168 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:38:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:38:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:38:39,060 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 01:38:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:38:39,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2023-02-16 01:38:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:39,060 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:38:39,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-16 01:38:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:38:39,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:38:39,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:38:39,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:39,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-16 01:38:39,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:38:43,911 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse7 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse1 (= (+ .cse5 .cse6 |ULTIMATE.start_main_~a~0#1|) (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8))) (.cse0 (= |ULTIMATE.start_main_~a~0#1| (+ .cse7 .cse8))) (.cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse3 .cse2 (= |ULTIMATE.start_main_~r~0#1| 0) .cse4) (and .cse0 .cse2 .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| (+ .cse5 .cse6)) .cse4)))) [2023-02-16 01:38:43,912 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~x~0#1|) [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))) [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse7 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse1 (= (+ .cse5 .cse6 |ULTIMATE.start_main_~a~0#1|) (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8))) (.cse0 (= |ULTIMATE.start_main_~a~0#1| (+ .cse7 .cse8))) (.cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse3 .cse2 (= |ULTIMATE.start_main_~r~0#1| 0) .cse4) (and .cse0 .cse2 .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| (+ .cse5 .cse6)) .cse4)))) [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 57) the Hoare annotation is: true [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-16 01:38:43,912 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-02-16 01:38:43,912 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))) (let ((.cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse5 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| (+ .cse2 .cse3))) (.cse7 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ .cse2 .cse3 |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) .cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5 (= |ULTIMATE.start_main_~r~0#1| 0) .cse6 .cse7) (and .cse4 .cse5 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse7)))) [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-16 01:38:43,913 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-16 01:38:43,913 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-02-16 01:38:43,913 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-02-16 01:38:43,915 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:43,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:38:43,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:38:43 BoogieIcfgContainer [2023-02-16 01:38:43,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:38:43,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:38:43,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:38:43,928 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:38:43,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:38:33" (3/4) ... [2023-02-16 01:38:43,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:38:43,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-16 01:38:43,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 01:38:43,938 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-16 01:38:43,938 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 01:38:43,938 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:38:43,938 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:38:43,963 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:38:43,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:38:43,963 INFO L158 Benchmark]: Toolchain (without parser) took 10526.56ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 76.7MB in the beginning and 118.8MB in the end (delta: -42.2MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,964 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:38:43,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.35ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 65.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.21ms. Allocated memory is still 111.1MB. Free memory was 65.9MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:38:43,964 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 63.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,965 INFO L158 Benchmark]: RCFGBuilder took 218.36ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 52.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,965 INFO L158 Benchmark]: TraceAbstraction took 10043.90ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 122.0MB in the end (delta: -70.2MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,965 INFO L158 Benchmark]: Witness Printer took 35.24ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 118.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:38:43,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.35ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 65.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.21ms. Allocated memory is still 111.1MB. Free memory was 65.9MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 63.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 218.36ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 52.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10043.90ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 122.0MB in the end (delta: -70.2MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Witness Printer took 35.24ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 118.8MB in the end (delta: 3.1MB). 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: 13]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 916 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 652 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1068 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 264 mSDtfsCounter, 1068 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 368 SyntacticMatches, 8 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=8, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 57 PreInvPairs, 102 NumberOfFragments, 473 HoareAnnotationTreeSize, 57 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 2586 FormulaSimplificationTreeSizeReductionInter, 4.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 1610 SizeOfPredicates, 50 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 360/406 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((a == x * p + y * r && y * s + x * q + a == x * p + b + y * r) && 1 <= x) && q * r + 1 == s * p RESULT: Ultimate proved your program to be correct! [2023-02-16 01:38:43,982 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