./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:36:14,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:36:14,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:36:14,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:36:14,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:36:14,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:36:14,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:36:14,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:36:14,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:36:14,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:36:14,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:36:14,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:36:14,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:36:14,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:36:14,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:36:14,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:36:14,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:36:14,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:36:14,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:36:14,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:36:14,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:36:14,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:36:14,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:36:14,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:36:14,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:36:14,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:36:14,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:36:14,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:36:14,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:36:14,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:36:14,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:36:14,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:36:14,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:36:14,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:36:14,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:36:14,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:36:14,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:36:14,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:36:14,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:36:14,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:36:14,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:36:14,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:36:14,493 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:36:14,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:36:14,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:36:14,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:36:14,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:36:14,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:36:14,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:36:14,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:36:14,496 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:36:14,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:36:14,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:36:14,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:36:14,497 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:36:14,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:36:14,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:36:14,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:36:14,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:36:14,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:36:14,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:36:14,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:36:14,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:36:14,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:36:14,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:36:14,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:36:14,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:36:14,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:36:14,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:36:14,500 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:36:14,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:36:14,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:36:14,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e [2023-02-15 20:36:14,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:36:14,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:36:14,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:36:14,693 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:36:14,693 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:36:14,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2023-02-15 20:36:15,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:36:15,987 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:36:15,988 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2023-02-15 20:36:15,993 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3fbba18d/0aa4e64d13e546c1982716f44d41dd5f/FLAG34b684c08 [2023-02-15 20:36:16,004 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3fbba18d/0aa4e64d13e546c1982716f44d41dd5f [2023-02-15 20:36:16,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:36:16,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:36:16,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:36:16,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:36:16,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:36:16,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d81792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16, skipping insertion in model container [2023-02-15 20:36:16,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:36:16,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:36:16,140 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2023-02-15 20:36:16,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:36:16,159 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:36:16,169 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2023-02-15 20:36:16,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:36:16,185 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:36:16,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16 WrapperNode [2023-02-15 20:36:16,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:36:16,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:36:16,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:36:16,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:36:16,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,212 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-15 20:36:16,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:36:16,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:36:16,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:36:16,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:36:16,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:36:16,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:36:16,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:36:16,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:36:16,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (1/1) ... [2023-02-15 20:36:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:36:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:16,258 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) [2023-02-15 20:36:16,264 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 [2023-02-15 20:36:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:36:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:36:16,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:36:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:36:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:36:16,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:36:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:36:16,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:36:16,349 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:36:16,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:36:16,550 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:36:16,569 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:36:16,569 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 20:36:16,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:36:16 BoogieIcfgContainer [2023-02-15 20:36:16,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:36:16,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:36:16,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:36:16,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:36:16,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:36:16" (1/3) ... [2023-02-15 20:36:16,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4842b059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:36:16, skipping insertion in model container [2023-02-15 20:36:16,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:36:16" (2/3) ... [2023-02-15 20:36:16,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4842b059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:36:16, skipping insertion in model container [2023-02-15 20:36:16,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:36:16" (3/3) ... [2023-02-15 20:36:16,578 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2023-02-15 20:36:16,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:36:16,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:36:16,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:36:16,697 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;@5024820b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:36:16,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:36:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:36:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 20:36:16,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:16,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:16,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1267887399, now seen corresponding path program 1 times [2023-02-15 20:36:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119368792] [2023-02-15 20:36:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119368792] [2023-02-15 20:36:16,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:36:16,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206272877] [2023-02-15 20:36:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:16,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:16,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:16,825 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) [2023-02-15 20:36:16,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:36:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:16,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:36:16,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 20:36:16,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:36:16,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206272877] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:36:16,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:36:16,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:36:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651307980] [2023-02-15 20:36:16,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:36:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:36:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:36:16,945 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-15 20:36:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:16,973 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2023-02-15 20:36:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:36:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 19 [2023-02-15 20:36:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:16,989 INFO L225 Difference]: With dead ends: 53 [2023-02-15 20:36:16,989 INFO L226 Difference]: Without dead ends: 24 [2023-02-15 20:36:16,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:36:16,998 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:17,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:36:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-15 20:36:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-15 20:36:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:36:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-02-15 20:36:17,049 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 19 [2023-02-15 20:36:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:17,051 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-02-15 20:36:17,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-15 20:36:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-02-15 20:36:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 20:36:17,054 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:17,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:17,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 20:36:17,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 20:36:17,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1485611193, now seen corresponding path program 1 times [2023-02-15 20:36:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:17,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780579074] [2023-02-15 20:36:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:17,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:17,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833547419] [2023-02-15 20:36:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:17,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:17,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:17,280 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) [2023-02-15 20:36:17,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:36:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:17,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 20:36:17,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:17,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:36:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:17,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780579074] [2023-02-15 20:36:17,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:17,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833547419] [2023-02-15 20:36:17,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833547419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:36:17,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:36:17,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 20:36:17,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941359379] [2023-02-15 20:36:17,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:17,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 20:36:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 20:36:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:36:17,413 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:17,430 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-02-15 20:36:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:36:17,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-02-15 20:36:17,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:17,431 INFO L225 Difference]: With dead ends: 38 [2023-02-15 20:36:17,431 INFO L226 Difference]: Without dead ends: 26 [2023-02-15 20:36:17,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:36:17,433 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:17,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:36:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-15 20:36:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-15 20:36:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:36:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-02-15 20:36:17,439 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 21 [2023-02-15 20:36:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:17,440 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-02-15 20:36:17,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-02-15 20:36:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 20:36:17,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:17,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:17,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:17,641 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,SelfDestructingSolverStorable1 [2023-02-15 20:36:17,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1580975129, now seen corresponding path program 1 times [2023-02-15 20:36:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904684359] [2023-02-15 20:36:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:17,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:17,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78311680] [2023-02-15 20:36:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:17,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:17,661 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) [2023-02-15 20:36:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:36:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:17,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-15 20:36:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:18,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:36:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:18,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904684359] [2023-02-15 20:36:18,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:18,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78311680] [2023-02-15 20:36:18,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78311680] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:36:18,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:36:18,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 20:36:18,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211422793] [2023-02-15 20:36:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 20:36:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 20:36:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:36:18,073 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:36:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:18,264 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-02-15 20:36:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:36:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-15 20:36:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:18,267 INFO L225 Difference]: With dead ends: 38 [2023-02-15 20:36:18,267 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 20:36:18,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:36:18,270 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:18,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 122 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:36:18,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 20:36:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-15 20:36:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:36:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-02-15 20:36:18,292 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2023-02-15 20:36:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-02-15 20:36:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:36:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-02-15 20:36:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 20:36:18,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:18,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:18,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 20:36:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:18,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1106421036, now seen corresponding path program 1 times [2023-02-15 20:36:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:18,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081507751] [2023-02-15 20:36:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:18,519 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:18,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499896631] [2023-02-15 20:36:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:18,528 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) [2023-02-15 20:36:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:36:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:18,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:36:18,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:18,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:36:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:18,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081507751] [2023-02-15 20:36:18,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:18,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499896631] [2023-02-15 20:36:18,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499896631] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:36:18,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:36:18,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2023-02-15 20:36:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304539792] [2023-02-15 20:36:18,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:36:18,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:36:18,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:36:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:36:18,665 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:36:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:18,691 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-02-15 20:36:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:36:18,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-15 20:36:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:18,696 INFO L225 Difference]: With dead ends: 49 [2023-02-15 20:36:18,696 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 20:36:18,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:36:18,701 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:36:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 20:36:18,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 20:36:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:36:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-02-15 20:36:18,711 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 24 [2023-02-15 20:36:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:18,712 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-02-15 20:36:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:36:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-02-15 20:36:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 20:36:18,713 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:18,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:18,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:18,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -450968108, now seen corresponding path program 1 times [2023-02-15 20:36:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885350035] [2023-02-15 20:36:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:18,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222999770] [2023-02-15 20:36:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:18,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:18,941 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) [2023-02-15 20:36:18,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:36:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:18,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:36:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:19,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:36:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885350035] [2023-02-15 20:36:19,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:19,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222999770] [2023-02-15 20:36:19,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222999770] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:36:19,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:36:19,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:36:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023681448] [2023-02-15 20:36:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:19,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:36:19,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:36:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:36:19,060 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:19,094 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-02-15 20:36:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:36:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-15 20:36:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:19,096 INFO L225 Difference]: With dead ends: 47 [2023-02-15 20:36:19,096 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 20:36:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:36:19,097 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:19,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 64 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:36:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 20:36:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 20:36:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:36:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-02-15 20:36:19,110 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2023-02-15 20:36:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:19,110 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-02-15 20:36:19,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-02-15 20:36:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 20:36:19,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:19,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:19,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:19,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -452755568, now seen corresponding path program 1 times [2023-02-15 20:36:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:19,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016087769] [2023-02-15 20:36:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:19,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711299107] [2023-02-15 20:36:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:19,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:19,330 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) [2023-02-15 20:36:19,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:36:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:19,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 20:36:19,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:36:19,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:36:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:20,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016087769] [2023-02-15 20:36:20,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711299107] [2023-02-15 20:36:20,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711299107] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:36:20,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:36:20,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-02-15 20:36:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185435844] [2023-02-15 20:36:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:36:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:36:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:36:20,006 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:22,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:25,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:27,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:29,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:31,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:34,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:36,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:38,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:39,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:41,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:43,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:45,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:48,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:48,336 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-02-15 20:36:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:36:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-15 20:36:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:48,339 INFO L225 Difference]: With dead ends: 46 [2023-02-15 20:36:48,339 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 20:36:48,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:36:48,340 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 106 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 27.4s Time] [2023-02-15 20:36:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 20:36:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-02-15 20:36:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:36:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-02-15 20:36:48,349 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2023-02-15 20:36:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:48,349 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-02-15 20:36:48,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 20:36:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-02-15 20:36:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 20:36:48,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:48,351 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] [2023-02-15 20:36:48,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:48,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 414654869, now seen corresponding path program 1 times [2023-02-15 20:36:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:48,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58001954] [2023-02-15 20:36:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:48,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:48,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280891] [2023-02-15 20:36:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:48,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:48,569 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) [2023-02-15 20:36:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:36:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:48,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 20:36:48,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:49,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:36:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58001954] [2023-02-15 20:36:50,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280891] [2023-02-15 20:36:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280891] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:36:50,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:36:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-02-15 20:36:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136929087] [2023-02-15 20:36:50,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:36:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 20:36:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 20:36:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:36:50,180 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:36:54,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:56,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 20:36:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:56,835 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-02-15 20:36:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 20:36:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-02-15 20:36:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:56,837 INFO L225 Difference]: With dead ends: 44 [2023-02-15 20:36:56,837 INFO L226 Difference]: Without dead ends: 28 [2023-02-15 20:36:56,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-02-15 20:36:56,838 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:56,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 166 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2023-02-15 20:36:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-15 20:36:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-15 20:36:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:36:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-15 20:36:56,846 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 27 [2023-02-15 20:36:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:56,847 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-15 20:36:56,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:36:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-15 20:36:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 20:36:56,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:36:56,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:36:56,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:57,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:36:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:36:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -793153283, now seen corresponding path program 1 times [2023-02-15 20:36:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:36:57,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420005855] [2023-02-15 20:36:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:36:57,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:36:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201796588] [2023-02-15 20:36:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:36:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:36:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:36:57,087 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) [2023-02-15 20:36:57,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 20:36:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:36:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 20:36:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:36:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:36:57,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:36:57,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:36:57,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420005855] [2023-02-15 20:36:57,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:36:57,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201796588] [2023-02-15 20:36:57,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201796588] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:36:57,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:36:57,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 20:36:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820572746] [2023-02-15 20:36:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:36:57,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 20:36:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:36:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 20:36:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 20:36:57,144 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 20:36:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:36:57,153 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2023-02-15 20:36:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 20:36:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-15 20:36:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:36:57,154 INFO L225 Difference]: With dead ends: 28 [2023-02-15 20:36:57,154 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:36:57,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 20:36:57,155 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:36:57,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:36:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:36:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:36:57,156 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) [2023-02-15 20:36:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:36:57,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-02-15 20:36:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:36:57,156 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:36:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 20:36:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:36:57,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:36:57,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:36:57,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 20:36:57,369 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,SelfDestructingSolverStorable7 [2023-02-15 20:36:57,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:37:19,596 WARN L233 SmtUtils]: Spent 19.97s on a formula simplification. DAG size of input: 72 DAG size of output: 39 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-15 20:37:41,274 WARN L233 SmtUtils]: Spent 21.68s on a formula simplification. DAG size of input: 76 DAG size of output: 40 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-15 20:37:45,108 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:37:45,108 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (and (<= 0 ~counter~0) (<= ~counter~0 0)) [2023-02-15 20:37:45,108 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (and (<= 0 ~counter~0) (< (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483647) (<= ~counter~0 0)) [2023-02-15 20:37:45,108 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-02-15 20:37:45,108 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:37:45,108 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 52) the Hoare annotation is: true [2023-02-15 20:37:45,108 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 49) no Hoare annotation was computed. [2023-02-15 20:37:45,109 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 49) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse5)) (.cse2 (< .cse5 2147483647)) (.cse3 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (and .cse0 (< .cse1 2147483647) .cse2 (not (<= .cse1 .cse3)) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0))) (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (and .cse0 .cse2 (<= 2 ~counter~0) (forall ((|aux_mod_ULTIMATE.start_main_~b~0#1_45| Int)) (or (<= |aux_mod_ULTIMATE.start_main_~b~0#1_45| .cse3) (= .cse4 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |aux_mod_ULTIMATE.start_main_~b~0#1_45|)) 4294967296)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~b~0#1_45|))) (= .cse4 (mod (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~r~0#1|) 4294967296))))))) [2023-02-15 20:37:45,109 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2023-02-15 20:37:45,109 INFO L895 garLoopResultBuilder]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse1 (< .cse6 2147483647)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (let ((.cse4 (mod (div (- |ULTIMATE.start_main_~b~0#1|) (- 2)) 4294967296))) (and .cse0 .cse1 (<= 1 ~counter~0) .cse2 .cse3 (<= 1 .cse4) (<= ~counter~0 1) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (< .cse4 2147483647))) (and .cse0 (exists ((|aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63| Int)) (let ((.cse5 (* 2 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63|))) (and (<= 0 .cse5) (<= (* 4294967296 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133|) 4294967295) (<= (* 2147483648 |aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170|) (+ (* 2147483647 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63|) 2147483646)) (< .cse5 2) (<= (+ (* 4294967294 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63|) 2) (+ (mod |ULTIMATE.start_main_~r~0#1| 4294967296) (* 4294967296 |aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170|) (* 8589934592 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133|)))))) .cse1 (<= 2 ~counter~0) .cse2 .cse3) (and .cse0 (<= 0 ~counter~0) .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) .cse3 (<= ~counter~0 0))))) [2023-02-15 20:37:45,109 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-02-15 20:37:45,109 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:37:45,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:37:45,109 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 40 49) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (< .cse0 2147483647)) (.cse2 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (and (<= 1 .cse0) .cse1 (<= 2 ~counter~0) (forall ((|aux_mod_ULTIMATE.start_main_~b~0#1_45| Int)) (or (<= |aux_mod_ULTIMATE.start_main_~b~0#1_45| .cse2) (= .cse3 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |aux_mod_ULTIMATE.start_main_~b~0#1_45|)) 4294967296)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~b~0#1_45|))) (= .cse3 (mod (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~r~0#1|) 4294967296)))) (and .cse1 (<= 1 ~counter~0) (not (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0))))) [2023-02-15 20:37:45,110 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (< (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483647) (<= 2 ~counter~0) (not (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2023-02-15 20:37:45,110 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2023-02-15 20:37:45,111 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2023-02-15 20:37:45,111 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2023-02-15 20:37:45,111 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-02-15 20:37:45,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:37:45,115 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:37:45,127 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,128 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,128 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,137 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,139 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,139 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,142 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,142 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,142 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,142 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,142 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,145 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,146 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,146 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,148 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,154 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,154 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,154 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,154 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,155 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,155 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,155 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:37:45 BoogieIcfgContainer [2023-02-15 20:37:45,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:37:45,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:37:45,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:37:45,159 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:37:45,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:36:16" (3/4) ... [2023-02-15 20:37:45,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:37:45,167 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 20:37:45,167 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:37:45,171 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 20:37:45,172 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-15 20:37:45,172 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:37:45,172 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:37:45,192 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 1 <= counter) && r == A) && q == 0) && 1 <= -b / -2 % 4294967296) && counter <= 1) && b % 2 == 0) && -b / -2 % 4294967296 < 2147483647) || (((((1 <= B % 4294967296 && (\exists aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 : int, aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133 : int, aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 : int :: (((0 <= 2 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 && 4294967296 * aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133 <= 4294967295) && 2147483648 * aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 <= 2147483647 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 + 2147483646) && 2 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 < 2) && 4294967294 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 + 2 <= r % 4294967296 + 4294967296 * aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 + 8589934592 * aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133)) && B % 4294967296 < 2147483647) && 2 <= counter) && r == A) && q == 0)) || ((((((1 <= B % 4294967296 && 0 <= counter) && B % 4294967296 < 2147483647) && r == A) && b == B) && q == 0) && counter <= 0) [2023-02-15 20:37:45,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:37:45,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:37:45,205 INFO L158 Benchmark]: Toolchain (without parser) took 89197.64ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 81.5MB in the beginning and 116.4MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:37:45,205 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:37:45,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.70ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 70.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:37:45,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.11ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:37:45,206 INFO L158 Benchmark]: Boogie Preprocessor took 15.16ms. Allocated memory is still 127.9MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:37:45,207 INFO L158 Benchmark]: RCFGBuilder took 342.06ms. Allocated memory is still 127.9MB. Free memory was 68.4MB in the beginning and 57.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:37:45,207 INFO L158 Benchmark]: TraceAbstraction took 88585.51ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 119.6MB in the end (delta: -62.6MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2023-02-15 20:37:45,208 INFO L158 Benchmark]: Witness Printer took 45.86ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 116.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 20:37:45,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.70ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 70.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.11ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.16ms. Allocated memory is still 127.9MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.06ms. Allocated memory is still 127.9MB. Free memory was 68.4MB in the beginning and 57.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 88585.51ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 119.6MB in the end (delta: -62.6MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * Witness Printer took 45.86ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 116.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] * 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: 21]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 88.4s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 47.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 33.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 677 SdHoareTripleChecker+Invalid, 33.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 475 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 202 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 207 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 50, 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, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 38 NumberOfFragments, 331 HoareAnnotationTreeSize, 24 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 787 FormulaSimplificationTreeSizeReductionInter, 47.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 259 ConstructedInterpolants, 22 QuantifiedInterpolants, 1444 SizeOfPredicates, 16 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 58/75 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: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant [2023-02-15 20:37:45,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-15 20:37:45,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] Derived loop invariant: ((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 2 <= counter) && (forall aux_mod_ULTIMATE.start_main_~b~0#1_45 : int :: (aux_mod_ULTIMATE.start_main_~b~0#1_45 <= r % 4294967296 || A % 4294967296 == (r + q * aux_mod_ULTIMATE.start_main_~b~0#1_45) % 4294967296) || 4294967296 <= aux_mod_ULTIMATE.start_main_~b~0#1_45)) && A % 4294967296 == (q * b + r) % 4294967296) || (((((B % 4294967296 < 2147483647 && 1 <= counter) && !(b % 4294967296 <= r % 4294967296)) && r == A) && b == B) && q == 0) - InvariantResult [Line: 36]: Loop Invariant [2023-02-15 20:37:45,231 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,231 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,231 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,232 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,232 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,232 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,232 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,232 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,233 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,233 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] [2023-02-15 20:37:45,233 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,233 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,234 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,234 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63,QUANTIFIED] [2023-02-15 20:37:45,234 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170,QUANTIFIED] [2023-02-15 20:37:45,234 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133,QUANTIFIED] Derived loop invariant: (((((((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 1 <= counter) && r == A) && q == 0) && 1 <= -b / -2 % 4294967296) && counter <= 1) && b % 2 == 0) && -b / -2 % 4294967296 < 2147483647) || (((((1 <= B % 4294967296 && (\exists aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 : int, aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133 : int, aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 : int :: (((0 <= 2 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 && 4294967296 * aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133 <= 4294967295) && 2147483648 * aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 <= 2147483647 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 + 2147483646) && 2 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 < 2) && 4294967294 * aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_22_49_56_63 + 2 <= r % 4294967296 + 4294967296 * aux_div_aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133_170 + 8589934592 * aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_~b~0#1_22_49_61_133)) && B % 4294967296 < 2147483647) && 2 <= counter) && r == A) && q == 0)) || ((((((1 <= B % 4294967296 && 0 <= counter) && B % 4294967296 < 2147483647) && r == A) && b == B) && q == 0) && counter <= 0) RESULT: Ultimate proved your program to be correct! [2023-02-15 20:37:45,351 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