./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:29:36,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:29:36,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:29:36,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:29:36,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:29:36,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:29:36,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:29:36,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:29:36,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:29:36,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:29:36,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:29:36,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:29:36,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:29:36,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:29:36,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:29:36,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:29:36,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:29:36,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:29:36,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:29:36,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:29:36,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:29:36,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:29:36,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:29:36,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:29:36,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:29:36,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:29:36,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:29:36,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:29:36,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:29:36,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:29:36,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:29:36,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:29:36,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:29:36,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:29:36,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:29:36,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:29:36,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:29:36,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:29:36,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:29:36,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:29:36,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:29:36,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:29:36,552 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:29:36,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:29:36,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:29:36,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:29:36,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:29:36,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:29:36,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:29:36,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:29:36,554 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:29:36,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:29:36,555 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:29:36,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:29:36,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:29:36,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:29:36,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:29:36,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:29:36,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:29:36,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:29:36,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:29:36,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:29:36,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:29:36,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:29:36,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:29:36,559 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:29:36,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2023-02-17 01:29:36,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:29:36,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:29:36,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:29:36,778 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:29:36,778 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:29:36,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-02-17 01:29:37,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:29:38,102 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:29:38,102 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-02-17 01:29:38,107 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dad3c0f6/5e45369b05e94471ac5eb329641c42c9/FLAG27f774f4b [2023-02-17 01:29:38,119 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dad3c0f6/5e45369b05e94471ac5eb329641c42c9 [2023-02-17 01:29:38,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:29:38,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:29:38,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:29:38,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:29:38,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:29:38,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab073f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38, skipping insertion in model container [2023-02-17 01:29:38,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:29:38,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:29:38,269 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2023-02-17 01:29:38,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:29:38,299 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:29:38,310 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2023-02-17 01:29:38,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:29:38,338 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:29:38,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38 WrapperNode [2023-02-17 01:29:38,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:29:38,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:29:38,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:29:38,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:29:38,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,368 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-17 01:29:38,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:29:38,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:29:38,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:29:38,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:29:38,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:29:38,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:29:38,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:29:38,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:29:38,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (1/1) ... [2023-02-17 01:29:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:29:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:38,456 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) [2023-02-17 01:29:38,465 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 [2023-02-17 01:29:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:29:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:29:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:29:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:29:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:29:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:29:38,548 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:29:38,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:29:38,702 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:29:38,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:29:38,706 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 01:29:38,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:29:38 BoogieIcfgContainer [2023-02-17 01:29:38,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:29:38,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:29:38,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:29:38,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:29:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:29:38" (1/3) ... [2023-02-17 01:29:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbccbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:29:38, skipping insertion in model container [2023-02-17 01:29:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:29:38" (2/3) ... [2023-02-17 01:29:38,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbccbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:29:38, skipping insertion in model container [2023-02-17 01:29:38,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:29:38" (3/3) ... [2023-02-17 01:29:38,713 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2023-02-17 01:29:38,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:29:38,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:29:38,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:29:38,817 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;@3f14f519, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:29:38,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:29:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 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) [2023-02-17 01:29:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 01:29:38,833 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:38,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:38,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-17 01:29:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:38,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789177805] [2023-02-17 01:29:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:38,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:38,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789177805] [2023-02-17 01:29:38,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 01:29:38,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217885158] [2023-02-17 01:29:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:38,967 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) [2023-02-17 01:29:38,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:29:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:39,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 01:29:39,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:29:39,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:29:39,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217885158] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:29:39,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:29:39,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 01:29:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074183013] [2023-02-17 01:29:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:39,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 01:29:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 01:29:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:29:39,089 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 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) [2023-02-17 01:29:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:39,103 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-17 01:29:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 01:29:39,104 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 [2023-02-17 01:29:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:39,108 INFO L225 Difference]: With dead ends: 55 [2023-02-17 01:29:39,108 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 01:29:39,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:29:39,112 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2023-02-17 01:29:39,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 01:29:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-17 01:29:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 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) [2023-02-17 01:29:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-17 01:29:39,135 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-17 01:29:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:39,135 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-17 01:29:39,135 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) [2023-02-17 01:29:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-17 01:29:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 01:29:39,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:39,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:39,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 01:29:39,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-17 01:29:39,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:39,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358128291] [2023-02-17 01:29:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358128291] [2023-02-17 01:29:39,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 01:29:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134820297] [2023-02-17 01:29:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:39,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:39,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:39,399 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) [2023-02-17 01:29:39,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:29:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:39,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 01:29:39,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:29:39,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:29:39,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134820297] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:29:39,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:29:39,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 01:29:39,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606830102] [2023-02-17 01:29:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:39,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 01:29:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 01:29:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 01:29:39,473 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-17 01:29:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:39,486 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-17 01:29:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 01:29:39,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2023-02-17 01:29:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:39,487 INFO L225 Difference]: With dead ends: 34 [2023-02-17 01:29:39,487 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 01:29:39,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 01:29:39,488 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:39,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 01:29:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-17 01:29:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 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) [2023-02-17 01:29:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-17 01:29:39,494 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-17 01:29:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:39,494 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-17 01:29:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-17 01:29:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-17 01:29:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 01:29:39,495 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:39,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:39,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 01:29:39,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-17 01:29:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:39,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463557251] [2023-02-17 01:29:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:39,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:39,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8549582] [2023-02-17 01:29:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:39,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:39,721 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) [2023-02-17 01:29:39,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:29:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 01:29:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:29:39,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:29:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463557251] [2023-02-17 01:29:39,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8549582] [2023-02-17 01:29:39,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8549582] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:29:39,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:29:39,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 01:29:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145080256] [2023-02-17 01:29:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:39,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:29:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:29:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:29:39,790 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 01:29:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:39,848 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-17 01:29:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 01:29:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2023-02-17 01:29:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:39,850 INFO L225 Difference]: With dead ends: 37 [2023-02-17 01:29:39,850 INFO L226 Difference]: Without dead ends: 35 [2023-02-17 01:29:39,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:29:39,851 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:39,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-17 01:29:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-17 01:29:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-17 01:29:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-17 01:29:39,870 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-17 01:29:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:39,870 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-17 01:29:39,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 01:29:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-17 01:29:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 01:29:39,871 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:39,872 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:39,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:40,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-17 01:29:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900702521] [2023-02-17 01:29:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:40,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:40,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793260071] [2023-02-17 01:29:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:40,096 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) [2023-02-17 01:29:40,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:29:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:40,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 01:29:40,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:29:40,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:29:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:29:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900702521] [2023-02-17 01:29:40,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793260071] [2023-02-17 01:29:40,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793260071] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 01:29:40,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:29:40,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-02-17 01:29:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108051702] [2023-02-17 01:29:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:40,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:29:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:29:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-17 01:29:40,236 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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) [2023-02-17 01:29:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:40,330 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-17 01:29:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:29:40,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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 15 [2023-02-17 01:29:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:40,332 INFO L225 Difference]: With dead ends: 50 [2023-02-17 01:29:40,334 INFO L226 Difference]: Without dead ends: 47 [2023-02-17 01:29:40,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:29:40,337 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:40,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:29:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-17 01:29:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-17 01:29:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:29:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-17 01:29:40,355 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-17 01:29:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-17 01:29:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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) [2023-02-17 01:29:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-17 01:29:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 01:29:40,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:40,357 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 01:29:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-17 01:29:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:40,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838325769] [2023-02-17 01:29:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:40,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473455152] [2023-02-17 01:29:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:40,594 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) [2023-02-17 01:29:40,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:29:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:40,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 01:29:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 01:29:40,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:29:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:29:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:40,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838325769] [2023-02-17 01:29:40,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:40,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473455152] [2023-02-17 01:29:40,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473455152] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 01:29:40,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:29:40,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-17 01:29:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539952995] [2023-02-17 01:29:40,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:29:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:29:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-17 01:29:40,671 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:29:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:40,708 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-17 01:29:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:29:40,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-17 01:29:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:40,709 INFO L225 Difference]: With dead ends: 52 [2023-02-17 01:29:40,710 INFO L226 Difference]: Without dead ends: 50 [2023-02-17 01:29:40,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:29:40,710 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:40,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-17 01:29:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-17 01:29:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:29:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-17 01:29:40,717 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-17 01:29:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:40,717 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-17 01:29:40,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:29:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-17 01:29:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 01:29:40,718 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:40,718 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:40,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-17 01:29:40,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-17 01:29:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:40,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082407473] [2023-02-17 01:29:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:40,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545997958] [2023-02-17 01:29:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:40,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:40,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:40,932 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) [2023-02-17 01:29:40,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 01:29:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 01:29:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:29:40,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:29:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:40,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082407473] [2023-02-17 01:29:40,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:40,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545997958] [2023-02-17 01:29:40,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545997958] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:29:40,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:29:40,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 01:29:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531240409] [2023-02-17 01:29:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:40,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:29:40,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:29:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:29:40,980 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:29:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:41,003 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-17 01:29:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 01:29:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-17 01:29:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:41,006 INFO L225 Difference]: With dead ends: 81 [2023-02-17 01:29:41,006 INFO L226 Difference]: Without dead ends: 56 [2023-02-17 01:29:41,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:29:41,009 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:41,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-17 01:29:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-17 01:29:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:29:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-17 01:29:41,028 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-17 01:29:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:41,028 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-17 01:29:41,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:29:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-17 01:29:41,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 01:29:41,030 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:41,031 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:41,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:41,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:41,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-17 01:29:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:41,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857106077] [2023-02-17 01:29:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:41,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:41,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851510712] [2023-02-17 01:29:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:41,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:41,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:41,250 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) [2023-02-17 01:29:41,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 01:29:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:41,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 01:29:41,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:29:41,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:29:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857106077] [2023-02-17 01:29:41,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851510712] [2023-02-17 01:29:41,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851510712] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:29:41,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:29:41,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 01:29:41,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733538307] [2023-02-17 01:29:41,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 01:29:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 01:29:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 01:29:41,339 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:29:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:41,406 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-17 01:29:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 01:29:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-17 01:29:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:41,412 INFO L225 Difference]: With dead ends: 62 [2023-02-17 01:29:41,412 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 01:29:41,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:29:41,415 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:41,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:29:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 01:29:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-17 01:29:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:29:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-17 01:29:41,435 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-17 01:29:41,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:41,436 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-17 01:29:41,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:29:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-17 01:29:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 01:29:41,438 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:41,438 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:41,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:41,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:41,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-17 01:29:41,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:41,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616092175] [2023-02-17 01:29:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:41,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:41,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846652686] [2023-02-17 01:29:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:41,685 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) [2023-02-17 01:29:41,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 01:29:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:41,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 01:29:41,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 01:29:41,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:29:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 01:29:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:41,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616092175] [2023-02-17 01:29:41,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:41,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846652686] [2023-02-17 01:29:41,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846652686] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:29:41,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:29:41,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-17 01:29:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355339794] [2023-02-17 01:29:41,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:29:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 01:29:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 01:29:41,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-17 01:29:41,945 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-17 01:29:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:42,070 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-17 01:29:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 01:29:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-17 01:29:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:42,072 INFO L225 Difference]: With dead ends: 79 [2023-02-17 01:29:42,072 INFO L226 Difference]: Without dead ends: 77 [2023-02-17 01:29:42,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-17 01:29:42,073 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:42,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 110 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:29:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-17 01:29:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-17 01:29:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:29:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-17 01:29:42,080 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-17 01:29:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:42,080 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-17 01:29:42,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-17 01:29:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-17 01:29:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 01:29:42,081 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:42,081 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:42,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-17 01:29:42,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-17 01:29:42,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-17 01:29:42,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:42,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121947306] [2023-02-17 01:29:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:42,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:42,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128888553] [2023-02-17 01:29:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:42,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:42,294 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) [2023-02-17 01:29:42,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 01:29:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:42,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 01:29:42,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 01:29:42,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:29:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-17 01:29:42,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:42,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121947306] [2023-02-17 01:29:42,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:42,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128888553] [2023-02-17 01:29:42,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128888553] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:29:42,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:29:42,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-17 01:29:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558904416] [2023-02-17 01:29:42,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:29:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 01:29:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 01:29:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:29:42,395 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-17 01:29:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:42,517 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2023-02-17 01:29:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 01:29:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-17 01:29:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:42,519 INFO L225 Difference]: With dead ends: 225 [2023-02-17 01:29:42,520 INFO L226 Difference]: Without dead ends: 218 [2023-02-17 01:29:42,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-17 01:29:42,522 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:42,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 202 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:29:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-17 01:29:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2023-02-17 01:29:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 136 states have internal predecessors, (156), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-17 01:29:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2023-02-17 01:29:42,557 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 42 [2023-02-17 01:29:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:42,557 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2023-02-17 01:29:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-17 01:29:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2023-02-17 01:29:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-17 01:29:42,559 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:29:42,559 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:42,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:42,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:29:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:29:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-17 01:29:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:29:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151228507] [2023-02-17 01:29:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:29:42,786 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:29:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013903722] [2023-02-17 01:29:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:29:42,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:29:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:29:42,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:29:42,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 01:29:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:29:42,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 01:29:42,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:29:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-17 01:29:42,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:29:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-17 01:29:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:29:43,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151228507] [2023-02-17 01:29:43,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:29:43,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013903722] [2023-02-17 01:29:43,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013903722] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 01:29:43,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:29:43,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-17 01:29:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575135732] [2023-02-17 01:29:43,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:29:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 01:29:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:29:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 01:29:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-17 01:29:43,022 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 01:29:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:29:43,203 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2023-02-17 01:29:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:29:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-17 01:29:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:29:43,204 INFO L225 Difference]: With dead ends: 202 [2023-02-17 01:29:43,204 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 01:29:43,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-17 01:29:43,207 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:29:43,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 58 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:29:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 01:29:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 01:29:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:29:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 01:29:43,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-17 01:29:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:29:43,208 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 01:29:43,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 01:29:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 01:29:43,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 01:29:43,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:29:43,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 01:29:43,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-17 01:29:43,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 01:29:43,429 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse9 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (< ~counter~0 9)) (.cse4 (let ((.cse11 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse11 .cse12 .cse9 .cse10) (and .cse7 .cse8 .cse11 .cse12 .cse9 .cse10)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse5 (< ~counter~0 10)) (.cse3 (or (and .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse7 .cse8 .cse9 .cse10)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (< (+ ~counter~0 1) 9) .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse3) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 .cse5 .cse3))))) [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-17 01:29:43,429 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-17 01:29:43,429 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (<= ~counter~0 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 10) .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (< (+ ~counter~0 1) 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 10) .cse4) (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (and .cse0 .cse1 .cse2 .cse3 (< (+ ~counter~0 1) 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse5 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse12 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse10 (< ~counter~0 10)) (.cse11 (< ~counter~0 9)) (.cse2 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~r~0#1| (* .cse12 2))) (.cse4 (= .cse12 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse6 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse5) (and (not .cse5) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 (or (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse10 .cse6 .cse7 .cse8 .cse9))) (and .cse2 .cse0 .cse3 .cse4 .cse1 .cse5 .cse6 .cse7 (< (+ ~counter~0 1) 9) .cse8 .cse9) (and .cse0 .cse1 (or (and .cse2 .cse3 .cse4 .cse5 .cse10 .cse8 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse8 .cse9))) (and .cse2 .cse0 .cse3 .cse4 .cse1 .cse5 .cse8 .cse11 .cse9) (and .cse2 .cse0 .cse3 .cse4 .cse1 .cse5 .cse6 .cse7 .cse8 .cse11 .cse9) (and (<= (+ ~counter~0 (- 1)) 1) .cse2 .cse0 .cse3 .cse4 .cse1 .cse5 .cse6 .cse7 .cse8 .cse9)))) [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse10 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse11 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse6) (and (not .cse6) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse13 (and .cse4 .cse5 .cse6 .cse10 .cse11)) (.cse14 (and .cse5 .cse6 .cse10 .cse11))) (let ((.cse9 (< (+ ~counter~0 1) 9)) (.cse3 (or .cse13 .cse14)) (.cse12 (< ~counter~0 10)) (.cse2 (< ~counter~0 9)) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse15 (+ ~counter~0 (- 1))) (.cse7 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse9 .cse3) (and .cse0 .cse1 (or (and .cse12 .cse3) .cse13 .cse14)) (and (<= .cse15 1) .cse4 .cse0 .cse5 .cse1 .cse6 .cse7 .cse8 .cse10 .cse11) (and .cse0 .cse1 (or (and .cse4 .cse5 .cse6 .cse12 .cse7 .cse8 .cse10 .cse11) (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11))) (and .cse4 .cse0 .cse5 .cse1 .cse6 .cse7 .cse8 .cse10 .cse2 .cse11) (and .cse0 .cse5 .cse1 (<= .cse15 0) .cse6 .cse7 .cse8 .cse10 .cse11)))))) [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 10) .cse4) (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< (+ ~counter~0 1) 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 9) .cse4) (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 10) .cse4) (and .cse0 .cse1 .cse2 .cse3 (< (+ ~counter~0 1) 9) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-17 01:29:43,430 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-17 01:29:43,430 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse9 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (< ~counter~0 9)) (.cse4 (let ((.cse11 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse11 .cse12 .cse9 .cse10) (and .cse7 .cse8 .cse11 .cse12 .cse9 .cse10)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse5 (< ~counter~0 10)) (.cse3 (or (and .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse7 .cse8 .cse9 .cse10)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (< (+ ~counter~0 1) 9) .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse3) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 .cse5 .cse3))))) [2023-02-17 01:29:43,431 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse9 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (< ~counter~0 9)) (.cse4 (let ((.cse11 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse11 .cse12 .cse9 .cse10) (and .cse7 .cse8 .cse11 .cse12 .cse9 .cse10)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse5 (< ~counter~0 10)) (.cse3 (or (and .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse7 .cse8 .cse9 .cse10)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (< (+ ~counter~0 1) 9) .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 .cse3) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 .cse5 .cse3))))) [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-17 01:29:43,431 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: (let ((.cse15 (+ ~counter~0 (- 1)))) (let ((.cse7 (= |__VERIFIER_assert_#in~cond| 0)) (.cse13 (< (+ ~counter~0 1) 9)) (.cse2 (< ~counter~0 9)) (.cse5 (<= .cse15 1)) (.cse14 (< ~counter~0 10)) (.cse3 (= |__VERIFIER_assert_#in~cond| 1)) (.cse11 (<= .cse15 0))) (let ((.cse10 (not .cse11)) (.cse8 (and .cse14 .cse3)) (.cse4 (not .cse5)) (.cse9 (not .cse14)) (.cse0 (not .cse2)) (.cse12 (not .cse13)) (.cse1 (not .cse3)) (.cse6 (not .cse7))) (and (or .cse0 .cse1 (and .cse2 .cse3)) (or .cse4 (and .cse5 .cse6) .cse7) (or .cse8 (and .cse1 (or .cse1 .cse9)) .cse3) (or .cse10 .cse7 (and .cse6 .cse11)) (or .cse12 (and .cse6 .cse13) .cse7) (or .cse4 .cse1 .cse7 (and .cse5 .cse6 .cse3)) (or .cse10 .cse1 (and .cse6 .cse11 .cse3) .cse7) (or .cse0 .cse1 (and .cse6 .cse2 .cse3) .cse7) (or .cse8 .cse1 .cse9) (or .cse12 (and .cse13 .cse3) .cse1) (or (and .cse6 .cse14) .cse7 .cse9) (or .cse4 .cse1 (and .cse5 .cse3)) (or .cse1 (and .cse6 .cse14 .cse3) .cse7 .cse9) (or .cse0 .cse7 (and .cse6 .cse2)) (or .cse12 .cse1 .cse7 (and .cse6 .cse13 .cse3)))))) [2023-02-17 01:29:43,431 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-17 01:29:43,433 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:29:43,434 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:29:43,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:29:43 BoogieIcfgContainer [2023-02-17 01:29:43,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:29:43,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:29:43,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:29:43,451 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:29:43,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:29:38" (3/4) ... [2023-02-17 01:29:43,466 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 01:29:43,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 01:29:43,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-17 01:29:43,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 01:29:43,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 01:29:43,473 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 01:29:43,492 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:29:43,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:29:43,493 INFO L158 Benchmark]: Toolchain (without parser) took 5370.22ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 74.5MB in the beginning and 53.4MB in the end (delta: 21.2MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.80ms. Allocated memory is still 119.5MB. Free memory was 74.1MB in the beginning and 63.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.79ms. Allocated memory is still 119.5MB. Free memory was 63.5MB in the beginning and 62.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: Boogie Preprocessor took 30.18ms. Allocated memory is still 119.5MB. Free memory was 61.8MB in the beginning and 60.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: RCFGBuilder took 307.54ms. Allocated memory is still 119.5MB. Free memory was 60.8MB in the beginning and 50.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,493 INFO L158 Benchmark]: TraceAbstraction took 4741.54ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 49.8MB in the beginning and 56.5MB in the end (delta: -6.7MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,494 INFO L158 Benchmark]: Witness Printer took 41.78ms. Allocated memory is still 184.5MB. Free memory was 56.5MB in the beginning and 53.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:29:43,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.80ms. Allocated memory is still 119.5MB. Free memory was 74.1MB in the beginning and 63.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.79ms. Allocated memory is still 119.5MB. Free memory was 63.5MB in the beginning and 62.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.18ms. Allocated memory is still 119.5MB. Free memory was 61.8MB in the beginning and 60.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.54ms. Allocated memory is still 119.5MB. Free memory was 60.8MB in the beginning and 50.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4741.54ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 49.8MB in the beginning and 56.5MB in the end (delta: -6.7MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. * Witness Printer took 41.78ms. Allocated memory is still 184.5MB. Free memory was 56.5MB in the beginning and 53.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 1007 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 686 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 622 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 321 mSDtfsCounter, 622 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=9, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 71 PreInvPairs, 131 NumberOfFragments, 4595 HoareAnnotationTreeSize, 71 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 1517 SizeOfPredicates, 39 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 374/418 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((x == (a + q) * y + (r + -b) && x == r + q * y) && counter < 9) && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))))) || (((((((((r >= 0 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && counter + 1 < 9) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((x == (a + q) * y + (r + -b) && x == r + q * y) && counter + 1 < 9) && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || ((x == (a + q) * y + (r + -b) && x == r + q * y) && (((counter < 10 && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))))) || ((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || (((((((((counter + -1 <= 1 && r >= 0) && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((x == (a + q) * y + (r + -b) && x == r + q * y) && ((((((((r >= 0 && a * y == b) && y >= 1) && counter < 10) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || ((((((r >= 0 && a * y == b) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || (((((((((r >= 0 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && 1 <= r) && counter < 9) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && counter + -1 <= 0) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && b == 0) && y >= 1) && r == x) && counter <= 0) && q == 0) && a == 0) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && counter < 9) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && counter < 10) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((counter + -1 <= 1 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && counter + 1 < 9) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) RESULT: Ultimate proved your program to be correct! [2023-02-17 01:29:43,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE