./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --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/egcd2-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:42:58,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:42:58,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:42:58,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:42:58,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:42:58,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:42:58,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:42:58,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:42:58,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:42:58,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:42:58,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:42:58,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:42:58,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:42:58,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:42:58,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:42:58,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:42:58,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:42:58,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:42:58,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:42:58,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:42:58,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:42:58,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:42:58,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:42:58,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:42:58,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:42:58,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:42:58,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:42:58,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:42:58,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:42:58,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:42:58,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:42:58,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:42:58,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:42:58,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:42:58,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:42:58,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:42:58,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:42:58,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:42:58,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:42:58,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:42:58,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:42:58,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:42:58,337 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:42:58,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:42:58,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:42:58,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:42:58,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:42:58,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:42:58,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:42:58,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:42:58,339 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:42:58,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:42:58,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:42:58,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:42:58,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:42:58,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:42:58,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:42:58,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:42:58,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:42:58,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:42:58,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:42:58,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:42:58,343 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:42:58,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:42:58,343 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:42:58,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2023-02-15 20:42:58,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:42:58,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:42:58,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:42:58,535 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:42:58,536 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:42:58,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-02-15 20:42:59,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:42:59,567 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:42:59,568 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-02-15 20:42:59,572 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02f172917/5245a41daef442c3b22e149982eb7a52/FLAGe764e80d5 [2023-02-15 20:42:59,583 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02f172917/5245a41daef442c3b22e149982eb7a52 [2023-02-15 20:42:59,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:42:59,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:42:59,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:42:59,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:42:59,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:42:59,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3518aa7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59, skipping insertion in model container [2023-02-15 20:42:59,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:42:59,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:42:59,688 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/egcd2-ll_valuebound1.c[490,503] [2023-02-15 20:42:59,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:42:59,704 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:42:59,711 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/egcd2-ll_valuebound1.c[490,503] [2023-02-15 20:42:59,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:42:59,723 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:42:59,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59 WrapperNode [2023-02-15 20:42:59,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:42:59,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:42:59,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:42:59,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:42:59,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,746 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-02-15 20:42:59,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:42:59,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:42:59,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:42:59,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:42:59,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:42:59,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:42:59,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:42:59,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:42:59,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (1/1) ... [2023-02-15 20:42:59,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:42:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:42:59,791 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 20:42:59,793 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 20:42:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:42:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:42:59,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:42:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:42:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:42:59,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:42:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:42:59,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:42:59,852 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:42:59,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:43:00,019 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:43:00,034 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:43:00,035 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 20:43:00,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:43:00 BoogieIcfgContainer [2023-02-15 20:43:00,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:43:00,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:43:00,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:43:00,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:43:00,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:42:59" (1/3) ... [2023-02-15 20:43:00,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778eb675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:43:00, skipping insertion in model container [2023-02-15 20:43:00,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:42:59" (2/3) ... [2023-02-15 20:43:00,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778eb675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:43:00, skipping insertion in model container [2023-02-15 20:43:00,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:43:00" (3/3) ... [2023-02-15 20:43:00,042 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2023-02-15 20:43:00,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:43:00,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:43:00,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:43:00,100 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;@1dd4ee1f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:43:00,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:43:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:43:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 20:43:00,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:00,110 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:00,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2023-02-15 20:43:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:00,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324185968] [2023-02-15 20:43:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:00,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:00,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324185968] [2023-02-15 20:43:00,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:43:00,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331166492] [2023-02-15 20:43:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:00,230 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 20:43:00,264 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 20:43:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:00,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:43:00,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-15 20:43:00,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:43:00,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331166492] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:43:00,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:43:00,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:43:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964978473] [2023-02-15 20:43:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:43:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:43:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:43:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:43:00,364 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:43:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:00,379 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2023-02-15 20:43:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:43:00,380 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-02-15 20:43:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:00,384 INFO L225 Difference]: With dead ends: 67 [2023-02-15 20:43:00,384 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 20:43:00,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 20:43:00,388 INFO L413 NwaCegarLoop]: 46 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, 46 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 20:43:00,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:43:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 20:43:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-15 20:43:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:43:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-02-15 20:43:00,411 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2023-02-15 20:43:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:00,412 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-02-15 20:43:00,412 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:43:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-02-15 20:43:00,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 20:43:00,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:00,414 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:00,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 20:43:00,622 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 20:43:00,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2023-02-15 20:43:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:00,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413742857] [2023-02-15 20:43:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:00,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:00,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569452609] [2023-02-15 20:43:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:00,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:00,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:00,645 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 20:43:00,653 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 20:43:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:00,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:43:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 20:43:00,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 20:43:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413742857] [2023-02-15 20:43:00,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569452609] [2023-02-15 20:43:00,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569452609] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:00,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:00,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-02-15 20:43:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792691720] [2023-02-15 20:43:00,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:43:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:43:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:43:00,859 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:43:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:00,970 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2023-02-15 20:43:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:43:00,970 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), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-02-15 20:43:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:00,971 INFO L225 Difference]: With dead ends: 48 [2023-02-15 20:43:00,971 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 20:43:00,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:43:00,973 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:00,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 88 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:43:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 20:43:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-02-15 20:43:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:43:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-02-15 20:43:00,980 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2023-02-15 20:43:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:00,981 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-02-15 20:43:00,981 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), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:43:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-02-15 20:43:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 20:43:00,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:00,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:00,991 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 20:43:01,188 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 20:43:01,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2023-02-15 20:43:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451553590] [2023-02-15 20:43:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:01,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:01,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343014429] [2023-02-15 20:43:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:01,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:01,210 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 20:43:01,211 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 20:43:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:01,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:43:01,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 20:43:01,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 20:43:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451553590] [2023-02-15 20:43:01,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343014429] [2023-02-15 20:43:01,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343014429] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:43:01,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:43:01,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-02-15 20:43:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418800103] [2023-02-15 20:43:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:43:01,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:43:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:43:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:43:01,403 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 20:43:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:01,463 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-02-15 20:43:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:43:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2023-02-15 20:43:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:01,467 INFO L225 Difference]: With dead ends: 39 [2023-02-15 20:43:01,467 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 20:43:01,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:43:01,470 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:01,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:43:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 20:43:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 20:43:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:43:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-02-15 20:43:01,486 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 41 [2023-02-15 20:43:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:01,487 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-02-15 20:43:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 20:43:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-02-15 20:43:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 20:43:01,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:01,488 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:01,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 20:43:01,688 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 20:43:01,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:01,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2023-02-15 20:43:01,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:01,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377301714] [2023-02-15 20:43:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:01,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285964302] [2023-02-15 20:43:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:01,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:01,701 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 20:43:01,703 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 20:43:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:01,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 20:43:01,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 20:43:01,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 20:43:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:02,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377301714] [2023-02-15 20:43:02,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:02,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285964302] [2023-02-15 20:43:02,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285964302] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:43:02,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:43:02,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-02-15 20:43:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239605697] [2023-02-15 20:43:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:43:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:43:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:43:02,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:43:02,106 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:43:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:02,151 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-02-15 20:43:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:43:02,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2023-02-15 20:43:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:02,152 INFO L225 Difference]: With dead ends: 50 [2023-02-15 20:43:02,153 INFO L226 Difference]: Without dead ends: 48 [2023-02-15 20:43:02,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:43:02,154 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:02,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:43:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-15 20:43:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2023-02-15 20:43:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 20:43:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-02-15 20:43:02,163 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 46 [2023-02-15 20:43:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:02,164 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-02-15 20:43:02,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:43:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-02-15 20:43:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-15 20:43:02,165 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:02,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:02,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 20:43:02,369 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 20:43:02,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash 779090230, now seen corresponding path program 1 times [2023-02-15 20:43:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:02,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397486864] [2023-02-15 20:43:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:02,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:02,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232294822] [2023-02-15 20:43:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:02,380 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 20:43:02,382 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 20:43:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:02,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 20:43:02,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-15 20:43:02,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:02,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397486864] [2023-02-15 20:43:02,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:02,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232294822] [2023-02-15 20:43:02,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232294822] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:43:02,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:43:02,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-15 20:43:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870801993] [2023-02-15 20:43:02,626 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 20:43:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 20:43:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:43:02,627 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-15 20:43:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:02,775 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2023-02-15 20:43:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 20:43:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2023-02-15 20:43:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:02,776 INFO L225 Difference]: With dead ends: 54 [2023-02-15 20:43:02,776 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 20:43:02,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:43:02,777 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 100 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:43:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 20:43:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-02-15 20:43:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 20:43:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-02-15 20:43:02,785 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 51 [2023-02-15 20:43:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:02,785 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-02-15 20:43:02,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-15 20:43:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-02-15 20:43:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 20:43:02,786 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:02,786 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:02,793 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 20:43:02,990 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 20:43:02,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2023-02-15 20:43:02,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450779249] [2023-02-15 20:43:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:02,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:03,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:03,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010792385] [2023-02-15 20:43:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:03,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:03,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:03,018 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 20:43:03,024 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 20:43:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:03,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 20:43:03,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-15 20:43:03,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:03,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:03,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450779249] [2023-02-15 20:43:03,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:03,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010792385] [2023-02-15 20:43:03,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010792385] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:43:03,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:43:03,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-15 20:43:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852700395] [2023-02-15 20:43:03,316 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:03,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 20:43:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 20:43:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:43:03,318 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 20:43:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:03,463 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-02-15 20:43:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 20:43:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-02-15 20:43:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:03,465 INFO L225 Difference]: With dead ends: 60 [2023-02-15 20:43:03,465 INFO L226 Difference]: Without dead ends: 58 [2023-02-15 20:43:03,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:43:03,467 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:03,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 96 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:43:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-15 20:43:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2023-02-15 20:43:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 20:43:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2023-02-15 20:43:03,476 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 56 [2023-02-15 20:43:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:03,476 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2023-02-15 20:43:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 20:43:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2023-02-15 20:43:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-15 20:43:03,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:03,477 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:03,484 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 20:43:03,682 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 20:43:03,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2023-02-15 20:43:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:03,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827912426] [2023-02-15 20:43:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:03,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597706603] [2023-02-15 20:43:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:03,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:03,693 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 20:43:03,694 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 20:43:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 20:43:03,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-02-15 20:43:03,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-02-15 20:43:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:03,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827912426] [2023-02-15 20:43:03,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:03,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597706603] [2023-02-15 20:43:03,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597706603] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:03,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:03,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-15 20:43:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437956073] [2023-02-15 20:43:03,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 20:43:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 20:43:03,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:43:03,834 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-15 20:43:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:03,994 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2023-02-15 20:43:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:43:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2023-02-15 20:43:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:03,996 INFO L225 Difference]: With dead ends: 102 [2023-02-15 20:43:03,996 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 20:43:03,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:43:03,997 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:03,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 267 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:43:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 20:43:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2023-02-15 20:43:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-02-15 20:43:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2023-02-15 20:43:04,023 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2023-02-15 20:43:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2023-02-15 20:43:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-15 20:43:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2023-02-15 20:43:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 20:43:04,029 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:04,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 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, 1, 1, 1, 1] [2023-02-15 20:43:04,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 20:43:04,237 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 20:43:04,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2023-02-15 20:43:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:04,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714941991] [2023-02-15 20:43:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:04,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41046893] [2023-02-15 20:43:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:04,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:04,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:04,254 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 20:43:04,255 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 20:43:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:04,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:43:04,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-15 20:43:04,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-02-15 20:43:04,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:04,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714941991] [2023-02-15 20:43:04,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:04,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41046893] [2023-02-15 20:43:04,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41046893] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:04,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:04,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2023-02-15 20:43:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783772] [2023-02-15 20:43:04,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:04,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 20:43:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 20:43:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:43:04,567 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-02-15 20:43:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:04,722 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2023-02-15 20:43:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:43:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) Word has length 71 [2023-02-15 20:43:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:04,724 INFO L225 Difference]: With dead ends: 100 [2023-02-15 20:43:04,724 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 20:43:04,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-02-15 20:43:04,727 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:04,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 180 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:43:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 20:43:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-15 20:43:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 20:43:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2023-02-15 20:43:04,740 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 71 [2023-02-15 20:43:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:04,741 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2023-02-15 20:43:04,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-02-15 20:43:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2023-02-15 20:43:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-15 20:43:04,742 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:04,743 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-02-15 20:43:04,751 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 20:43:04,949 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 20:43:04,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2023-02-15 20:43:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:04,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420986223] [2023-02-15 20:43:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:04,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:04,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229241645] [2023-02-15 20:43:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:04,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:04,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:43:04,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 20:43:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:05,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-15 20:43:05,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-02-15 20:43:05,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-02-15 20:43:05,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:05,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420986223] [2023-02-15 20:43:05,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:05,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229241645] [2023-02-15 20:43:05,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229241645] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:05,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:05,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-02-15 20:43:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370906626] [2023-02-15 20:43:05,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:05,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 20:43:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 20:43:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-02-15 20:43:05,714 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2023-02-15 20:43:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:07,055 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2023-02-15 20:43:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 20:43:07,056 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) Word has length 87 [2023-02-15 20:43:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:07,056 INFO L225 Difference]: With dead ends: 83 [2023-02-15 20:43:07,056 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 20:43:07,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 20:43:07,057 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 46 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:07,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 234 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 20:43:07,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 20:43:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2023-02-15 20:43:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 44 states have internal predecessors, (46), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-15 20:43:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2023-02-15 20:43:07,073 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 87 [2023-02-15 20:43:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:07,074 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2023-02-15 20:43:07,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2023-02-15 20:43:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2023-02-15 20:43:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-15 20:43:07,078 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:07,078 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-02-15 20:43:07,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 20:43:07,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:07,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 169494115, now seen corresponding path program 1 times [2023-02-15 20:43:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884066548] [2023-02-15 20:43:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:07,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:07,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400398410] [2023-02-15 20:43:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:07,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:07,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:43:07,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 20:43:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:43:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 20:43:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-02-15 20:43:07,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-02-15 20:43:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884066548] [2023-02-15 20:43:07,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400398410] [2023-02-15 20:43:07,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400398410] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:07,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:07,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2023-02-15 20:43:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307614088] [2023-02-15 20:43:07,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:07,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 20:43:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 20:43:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-02-15 20:43:07,884 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-02-15 20:43:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:08,715 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2023-02-15 20:43:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 20:43:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 92 [2023-02-15 20:43:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:08,716 INFO L225 Difference]: With dead ends: 81 [2023-02-15 20:43:08,716 INFO L226 Difference]: Without dead ends: 64 [2023-02-15 20:43:08,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2023-02-15 20:43:08,717 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 45 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:08,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 124 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 20:43:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-15 20:43:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-15 20:43:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 23 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-15 20:43:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2023-02-15 20:43:08,730 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 92 [2023-02-15 20:43:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:08,730 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2023-02-15 20:43:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-02-15 20:43:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2023-02-15 20:43:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-02-15 20:43:08,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:43:08,731 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:08,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 20:43:08,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 20:43:08,936 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:43:08,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:43:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash 649793148, now seen corresponding path program 2 times [2023-02-15 20:43:08,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:43:08,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41051808] [2023-02-15 20:43:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:43:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:43:08,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:43:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320635643] [2023-02-15 20:43:08,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:43:08,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:43:08,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:43:08,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:43:08,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 20:43:09,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:43:09,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:43:09,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 20:43:09,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:43:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-02-15 20:43:09,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:43:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-02-15 20:43:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:43:09,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41051808] [2023-02-15 20:43:09,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:43:09,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320635643] [2023-02-15 20:43:09,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320635643] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:43:09,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:43:09,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-02-15 20:43:09,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686450088] [2023-02-15 20:43:09,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:43:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 20:43:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:43:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 20:43:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:43:09,271 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2023-02-15 20:43:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:43:09,513 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-02-15 20:43:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:43:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) Word has length 131 [2023-02-15 20:43:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:43:09,513 INFO L225 Difference]: With dead ends: 64 [2023-02-15 20:43:09,514 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:43:09,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-02-15 20:43:09,515 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 35 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:43:09,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 236 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:43:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:43:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:43:09,515 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 20:43:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:43:09,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2023-02-15 20:43:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:43:09,516 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:43:09,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 12 states have call predecessors, (44), 13 states have call successors, (44) [2023-02-15 20:43:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:43:09,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:43:09,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:43:09,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-15 20:43:09,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 20:43:09,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:43:12,562 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse3 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse0 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5) (and .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 (= 0 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:43:12,562 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse3 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse0 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5) (and .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 (= 0 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:43:12,562 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 74) the Hoare annotation is: true [2023-02-15 20:43:12,563 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:43:12,563 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:43:12,563 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|)) [2023-02-15 20:43:12,563 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:43:12,563 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse3 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse0 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5) (and .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 (= 0 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:43:12,563 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 68) the Hoare annotation is: (let ((.cse4 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse4)) (.cse2 (= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse1 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))) (.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= .cse1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) .cse2 .cse3) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 .cse4) (= 0 |ULTIMATE.start_main_~b~0#1|) .cse2 (<= .cse4 |ULTIMATE.start_main_~x~0#1|) (= 0 .cse1) .cse3)))) [2023-02-15 20:43:12,563 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (= |ULTIMATE.start_main_~a~0#1| .cse0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 .cse0) (= 0 |ULTIMATE.start_main_~b~0#1|) (= 0 |ULTIMATE.start_main_~c~0#1|) (<= .cse0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 0 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))))) [2023-02-15 20:43:12,563 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:43:12,564 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:43:12,564 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse3 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse0 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5) (and .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 (= 0 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:43:12,564 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2023-02-15 20:43:12,564 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:43:12,564 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (= |ULTIMATE.start_main_~a~0#1| .cse0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 .cse0) (= 0 |ULTIMATE.start_main_~b~0#1|) (= 0 |ULTIMATE.start_main_~c~0#1|) (<= .cse0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|))) [2023-02-15 20:43:12,564 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) (= 0 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:43:12,564 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) (= 0 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:43:12,564 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse3 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse0 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5) (and .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 (= 0 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-15 20:43:12,565 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:43:12,566 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-02-15 20:43:12,568 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:43:12,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:43:12,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:43:12 BoogieIcfgContainer [2023-02-15 20:43:12,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:43:12,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:43:12,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:43:12,598 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:43:12,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:43:00" (3/4) ... [2023-02-15 20:43:12,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:43:12,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 20:43:12,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:43:12,606 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 20:43:12,607 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 20:43:12,607 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:43:12,607 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:43:12,629 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:43:12,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:43:12,629 INFO L158 Benchmark]: Toolchain (without parser) took 13043.73ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 93.9MB in the beginning and 110.1MB in the end (delta: -16.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,630 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:43:12,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.56ms. Allocated memory is still 127.9MB. Free memory was 93.9MB in the beginning and 82.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.23ms. Allocated memory is still 127.9MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,630 INFO L158 Benchmark]: Boogie Preprocessor took 20.60ms. Allocated memory is still 127.9MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 845.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:43:12,631 INFO L158 Benchmark]: RCFGBuilder took 268.16ms. Allocated memory is still 127.9MB. Free memory was 80.0MB in the beginning and 68.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,631 INFO L158 Benchmark]: TraceAbstraction took 12560.18ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 67.9MB in the beginning and 113.3MB in the end (delta: -45.4MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,631 INFO L158 Benchmark]: Witness Printer took 31.09ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 110.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 20:43:12,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.56ms. Allocated memory is still 127.9MB. Free memory was 93.9MB in the beginning and 82.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.23ms. Allocated memory is still 127.9MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.60ms. Allocated memory is still 127.9MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 845.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 268.16ms. Allocated memory is still 127.9MB. Free memory was 80.0MB in the beginning and 68.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12560.18ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 67.9MB in the beginning and 113.3MB in the end (delta: -45.4MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 31.09ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 110.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1632 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1215 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2069 IncrementalHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 417 mSDtfsCounter, 2069 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1331 GetRequests, 1145 SyntacticMatches, 14 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=7, InterpolantAutomatonStates: 107, 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, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 73 PreInvPairs, 103 NumberOfFragments, 867 HoareAnnotationTreeSize, 73 FomulaSimplifications, 556 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 2543 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1273 ConstructedInterpolants, 0 QuantifiedInterpolants, 4173 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1877 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 2742/3060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((r == 0 && 1 <= a) && b == y) && a == x * p + y * r) && yy == y * y) && k == 0) && c <= x) && a <= 1) && y * s + x * q == b) && s == 1) && b <= 1) && 1 <= c) && 1 <= y) || (((((((((((b == y && a == x * p + y * r) && yy == y * y) && x <= 1) && p == 1) && 1 <= x) && q == 0) && r == 0) && a == k * b + c) && s == 1) && 0 == c) && 1 <= y) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((r == 0 && 1 <= a) && b == y) && a == x * p + y * r) && yy == y * y) && k == 0) && a <= 1) && a <= x) && y * s + x * q == b) && s == 1) && b <= 1) && 0 == c) && 1 <= y) || ((((((((a == x * p + y * r && x <= 1) && y <= 1) && 1 <= x * p + y * r) && 0 == b) && 0 == c) && x * p + y * r <= x) && 0 == y * s + x * q) && 1 <= y) RESULT: Ultimate proved your program to be correct! [2023-02-15 20:43:12,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE