./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/hard-ll.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/hard-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:21:07,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:21:07,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:21:07,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:21:07,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:21:07,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:21:07,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:21:07,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:21:07,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:21:07,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:21:07,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:21:07,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:21:07,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:21:07,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:21:07,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:21:07,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:21:07,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:21:07,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:21:07,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:21:07,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:21:07,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:21:07,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:21:07,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:21:07,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:21:07,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:21:07,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:21:07,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:21:07,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:21:07,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:21:07,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:21:07,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:21:07,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:21:07,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:21:07,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:21:07,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:21:07,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:21:07,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:21:07,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:21:07,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:21:07,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:21:07,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:21:07,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:21:07,722 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:21:07,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:21:07,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:21:07,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:21:07,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:21:07,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:21:07,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:21:07,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:21:07,726 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:21:07,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:21:07,727 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:21:07,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:21:07,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:21:07,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:21:07,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:21:07,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:21:07,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:21:07,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:21:07,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:21:07,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:21:07,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:21:07,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:21:07,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:21:07,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:21:07,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:21:07,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:21:07,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:21:07,731 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:21:07,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:21:07,731 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:21:07,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 [2023-02-15 20:21:07,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:21:08,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:21:08,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:21:08,021 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:21:08,022 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:21:08,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard-ll.c [2023-02-15 20:21:09,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:21:09,259 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:21:09,260 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard-ll.c [2023-02-15 20:21:09,266 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bed1cd0/f3624ab8b8ce40a3b0a6290a7679cb7d/FLAG558cd56f3 [2023-02-15 20:21:09,284 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bed1cd0/f3624ab8b8ce40a3b0a6290a7679cb7d [2023-02-15 20:21:09,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:21:09,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:21:09,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:21:09,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:21:09,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:21:09,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536ed4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09, skipping insertion in model container [2023-02-15 20:21:09,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:21:09,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:21:09,472 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/hard-ll.c[538,551] [2023-02-15 20:21:09,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:21:09,501 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:21:09,512 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/hard-ll.c[538,551] [2023-02-15 20:21:09,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:21:09,531 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:21:09,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09 WrapperNode [2023-02-15 20:21:09,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:21:09,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:21:09,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:21:09,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:21:09,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,557 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-02-15 20:21:09,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:21:09,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:21:09,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:21:09,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:21:09,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:21:09,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:21:09,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:21:09,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:21:09,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (1/1) ... [2023-02-15 20:21:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:21:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:09,621 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 20:21:09,638 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 20:21:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:21:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:21:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:21:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:21:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:21:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:21:09,709 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:21:09,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:21:09,963 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:21:09,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:21:09,970 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 20:21:09,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:21:09 BoogieIcfgContainer [2023-02-15 20:21:09,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:21:09,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:21:09,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:21:09,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:21:09,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:21:09" (1/3) ... [2023-02-15 20:21:09,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758144d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:21:09, skipping insertion in model container [2023-02-15 20:21:09,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:21:09" (2/3) ... [2023-02-15 20:21:09,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758144d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:21:09, skipping insertion in model container [2023-02-15 20:21:09,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:21:09" (3/3) ... [2023-02-15 20:21:09,978 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll.c [2023-02-15 20:21:09,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:21:10,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:21:10,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:21:10,070 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;@32b4bed1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:21:10,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:21:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 20:21:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 20:21:10,093 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:10,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:10,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2023-02-15 20:21:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:10,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846169452] [2023-02-15 20:21:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:10,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:21:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:10,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846169452] [2023-02-15 20:21:10,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846169452] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:21:10,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:21:10,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:21:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069174329] [2023-02-15 20:21:10,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:21:10,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:21:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:21:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:21:10,305 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:21:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:10,332 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2023-02-15 20:21:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:21:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 20:21:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:10,343 INFO L225 Difference]: With dead ends: 49 [2023-02-15 20:21:10,344 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 20:21:10,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:21:10,351 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:10,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 20:21:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 20:21:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 20:21:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-02-15 20:21:10,388 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-02-15 20:21:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:10,390 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-15 20:21:10,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:21:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-02-15 20:21:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 20:21:10,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:10,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:10,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 20:21:10,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2023-02-15 20:21:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:10,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059756150] [2023-02-15 20:21:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:10,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:21:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:10,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059756150] [2023-02-15 20:21:10,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059756150] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:21:10,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:21:10,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:21:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574615781] [2023-02-15 20:21:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:21:10,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:21:10,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:21:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:10,568 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:21:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:10,646 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-02-15 20:21:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:21:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 20:21:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:10,648 INFO L225 Difference]: With dead ends: 35 [2023-02-15 20:21:10,648 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 20:21:10,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:21:10,650 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:10,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 20:21:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2023-02-15 20:21:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 20:21:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-02-15 20:21:10,659 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-02-15 20:21:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-02-15 20:21:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:21:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-02-15 20:21:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 20:21:10,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:10,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:10,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 20:21:10,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2023-02-15 20:21:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:10,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975994971] [2023-02-15 20:21:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:10,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 20:21:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:21:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975994971] [2023-02-15 20:21:10,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975994971] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:21:10,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:21:10,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:21:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796612594] [2023-02-15 20:21:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:21:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:21:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:21:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:10,812 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:21:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:10,897 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-02-15 20:21:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:21:10,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-15 20:21:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:10,899 INFO L225 Difference]: With dead ends: 39 [2023-02-15 20:21:10,900 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 20:21:10,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:21:10,903 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:10,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:21:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 20:21:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-02-15 20:21:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 20:21:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-15 20:21:10,917 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-02-15 20:21:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:10,918 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-15 20:21:10,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:21:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-15 20:21:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 20:21:10,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:10,919 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:10,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 20:21:10,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2023-02-15 20:21:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:10,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294818998] [2023-02-15 20:21:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:10,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281652434] [2023-02-15 20:21:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:10,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:10,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:10,935 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 20:21:10,956 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 20:21:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:10,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 20:21:11,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:21:11,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:21:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294818998] [2023-02-15 20:21:11,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281652434] [2023-02-15 20:21:11,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281652434] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:21:11,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:21:11,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 20:21:11,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018173852] [2023-02-15 20:21:11,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:21:11,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:21:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:21:11,285 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:21:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:11,456 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-15 20:21:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:21:11,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-15 20:21:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:11,459 INFO L225 Difference]: With dead ends: 65 [2023-02-15 20:21:11,459 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 20:21:11,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:21:11,461 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:11,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:21:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 20:21:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-02-15 20:21:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:21:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2023-02-15 20:21:11,475 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 19 [2023-02-15 20:21:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:11,476 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2023-02-15 20:21:11,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:21:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2023-02-15 20:21:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 20:21:11,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:11,477 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:11,489 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 20:21:11,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:11,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2023-02-15 20:21:11,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:11,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129164452] [2023-02-15 20:21:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:11,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:11,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:11,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874410827] [2023-02-15 20:21:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:11,706 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 20:21:11,716 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 20:21:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:21:11,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 20:21:11,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 20:21:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:12,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129164452] [2023-02-15 20:21:12,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:12,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874410827] [2023-02-15 20:21:12,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874410827] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:21:12,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:21:12,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 20:21:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880332440] [2023-02-15 20:21:12,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:12,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 20:21:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 20:21:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:21:12,015 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 20:21:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:12,170 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2023-02-15 20:21:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:21:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-02-15 20:21:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:12,172 INFO L225 Difference]: With dead ends: 62 [2023-02-15 20:21:12,172 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 20:21:12,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:21:12,173 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 53 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:21:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 20:21:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-15 20:21:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:21:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2023-02-15 20:21:12,192 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2023-02-15 20:21:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:12,192 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2023-02-15 20:21:12,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 20:21:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2023-02-15 20:21:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 20:21:12,194 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:12,194 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:12,203 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 20:21:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:12,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 911994481, now seen corresponding path program 1 times [2023-02-15 20:21:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:12,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97745635] [2023-02-15 20:21:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:12,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:12,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174815473] [2023-02-15 20:21:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:12,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:12,424 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 20:21:12,425 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 20:21:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 20:21:12,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-15 20:21:12,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:21:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97745635] [2023-02-15 20:21:12,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174815473] [2023-02-15 20:21:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174815473] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:21:12,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:21:12,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 20:21:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16726248] [2023-02-15 20:21:12,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:21:12,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 20:21:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 20:21:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:21:12,523 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-15 20:21:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:12,569 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-02-15 20:21:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:21:12,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-02-15 20:21:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:12,572 INFO L225 Difference]: With dead ends: 63 [2023-02-15 20:21:12,572 INFO L226 Difference]: Without dead ends: 56 [2023-02-15 20:21:12,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:21:12,574 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:12,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-15 20:21:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-15 20:21:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:21:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2023-02-15 20:21:12,596 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 54 [2023-02-15 20:21:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:12,598 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2023-02-15 20:21:12,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-15 20:21:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2023-02-15 20:21:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 20:21:12,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:12,600 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:12,610 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 20:21:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:12,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2023-02-15 20:21:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194399049] [2023-02-15 20:21:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:12,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:12,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868044748] [2023-02-15 20:21:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:12,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:12,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:12,838 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 20:21:12,839 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 20:21:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:12,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 20:21:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-15 20:21:13,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-15 20:21:14,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:14,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194399049] [2023-02-15 20:21:14,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:14,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868044748] [2023-02-15 20:21:14,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868044748] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:21:14,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:21:14,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-02-15 20:21:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346385233] [2023-02-15 20:21:14,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:14,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 20:21:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:14,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 20:21:14,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-02-15 20:21:14,556 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-15 20:21:18,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 20:21:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:21,099 INFO L93 Difference]: Finished difference Result 133 states and 168 transitions. [2023-02-15 20:21:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 20:21:21,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 56 [2023-02-15 20:21:21,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:21,101 INFO L225 Difference]: With dead ends: 133 [2023-02-15 20:21:21,101 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 20:21:21,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2023-02-15 20:21:21,102 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 86 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 130 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:21,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 160 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 364 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-02-15 20:21:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 20:21:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2023-02-15 20:21:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 65 states have internal predecessors, (68), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-15 20:21:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2023-02-15 20:21:21,139 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 56 [2023-02-15 20:21:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:21,139 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2023-02-15 20:21:21,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-15 20:21:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2023-02-15 20:21:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 20:21:21,144 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:21,145 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:21,158 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 20:21:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:21,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2023-02-15 20:21:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:21,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348578814] [2023-02-15 20:21:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:21,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:21,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645662613] [2023-02-15 20:21:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:21,372 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 20:21:21,375 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 20:21:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:21,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 20:21:21,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 37 proven. 19 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 20:21:21,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:22,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348578814] [2023-02-15 20:21:22,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:22,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645662613] [2023-02-15 20:21:22,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645662613] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:21:22,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:21:22,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 20:21:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114897307] [2023-02-15 20:21:22,016 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:21:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:21:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-15 20:21:22,017 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-15 20:21:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:22,698 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2023-02-15 20:21:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 20:21:22,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 67 [2023-02-15 20:21:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:22,700 INFO L225 Difference]: With dead ends: 108 [2023-02-15 20:21:22,700 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 20:21:22,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2023-02-15 20:21:22,701 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:22,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 82 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 20:21:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 20:21:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-15 20:21:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.125) internal successors, (72), 68 states have internal predecessors, (72), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-15 20:21:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-02-15 20:21:22,728 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 67 [2023-02-15 20:21:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:22,729 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-02-15 20:21:22,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-15 20:21:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-02-15 20:21:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 20:21:22,730 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:22,730 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:22,739 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 20:21:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:22,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -843815949, now seen corresponding path program 2 times [2023-02-15 20:21:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:22,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726441699] [2023-02-15 20:21:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:22,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:22,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057081581] [2023-02-15 20:21:22,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:21:22,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:22,953 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 20:21:22,954 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 20:21:22,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:21:22,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:21:22,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:21:22,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-15 20:21:23,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-15 20:21:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:23,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726441699] [2023-02-15 20:21:23,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057081581] [2023-02-15 20:21:23,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057081581] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:21:23,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:21:23,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-02-15 20:21:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739014872] [2023-02-15 20:21:23,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:21:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:21:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:23,122 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-02-15 20:21:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:23,172 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2023-02-15 20:21:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:21:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 69 [2023-02-15 20:21:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:23,174 INFO L225 Difference]: With dead ends: 119 [2023-02-15 20:21:23,174 INFO L226 Difference]: Without dead ends: 88 [2023-02-15 20:21:23,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:23,175 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:23,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-15 20:21:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-15 20:21:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.125) internal successors, (63), 60 states have internal predecessors, (63), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-15 20:21:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2023-02-15 20:21:23,201 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 69 [2023-02-15 20:21:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:23,201 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2023-02-15 20:21:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-02-15 20:21:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2023-02-15 20:21:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-02-15 20:21:23,206 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:23,206 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:23,215 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 20:21:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:23,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash -625040052, now seen corresponding path program 1 times [2023-02-15 20:21:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:23,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546057909] [2023-02-15 20:21:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:23,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:23,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:23,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400698611] [2023-02-15 20:21:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:23,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:23,441 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 20:21:23,444 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 20:21:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:23,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:21:23,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-15 20:21:23,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-15 20:21:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:23,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546057909] [2023-02-15 20:21:23,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:23,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400698611] [2023-02-15 20:21:23,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400698611] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:21:23,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:21:23,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-02-15 20:21:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757836020] [2023-02-15 20:21:23,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:21:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:21:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:21:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:23,627 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-02-15 20:21:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:23,680 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2023-02-15 20:21:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 20:21:23,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2023-02-15 20:21:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:23,682 INFO L225 Difference]: With dead ends: 96 [2023-02-15 20:21:23,682 INFO L226 Difference]: Without dead ends: 89 [2023-02-15 20:21:23,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:23,683 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:23,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 94 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-15 20:21:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-02-15 20:21:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 60 states have internal predecessors, (64), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-15 20:21:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2023-02-15 20:21:23,699 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 84 [2023-02-15 20:21:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:23,699 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2023-02-15 20:21:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-02-15 20:21:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2023-02-15 20:21:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 20:21:23,700 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:23,700 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:23,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:21:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:23,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2023-02-15 20:21:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:23,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897422760] [2023-02-15 20:21:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:23,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33820109] [2023-02-15 20:21:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:23,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:23,920 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 20:21:23,944 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 20:21:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:21:23,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:21:23,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-02-15 20:21:24,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:21:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:21:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897422760] [2023-02-15 20:21:24,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:21:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33820109] [2023-02-15 20:21:24,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33820109] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:21:24,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:21:24,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:21:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113525796] [2023-02-15 20:21:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:21:24,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:21:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:21:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:21:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:24,056 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-15 20:21:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:21:24,105 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2023-02-15 20:21:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 20:21:24,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 86 [2023-02-15 20:21:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:21:24,106 INFO L225 Difference]: With dead ends: 122 [2023-02-15 20:21:24,106 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 20:21:24,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:21:24,107 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:21:24,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:21:24,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 20:21:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-15 20:21:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 58 states have internal predecessors, (62), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-15 20:21:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2023-02-15 20:21:24,122 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 86 [2023-02-15 20:21:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:21:24,122 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2023-02-15 20:21:24,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-15 20:21:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2023-02-15 20:21:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 20:21:24,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:21:24,123 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:21:24,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 20:21:24,328 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,SelfDestructingSolverStorable10 [2023-02-15 20:21:24,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:21:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:21:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 3 times [2023-02-15 20:21:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:21:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274945993] [2023-02-15 20:21:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:21:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:21:24,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:21:24,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433851060] [2023-02-15 20:21:24,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 20:21:24,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:21:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:21:24,346 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 20:21:24,349 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 20:21:24,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 20:21:24,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:21:24,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-15 20:21:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:21:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 69 proven. 47 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-02-15 20:21:25,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:21:58,605 WARN L233 SmtUtils]: Spent 19.06s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 20:24:10,135 WARN L233 SmtUtils]: Spent 41.89s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)