./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.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/bresenham-ll_unwindbound5.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 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 01:15:44,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 01:15:44,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 01:15:44,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 01:15:44,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 01:15:44,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 01:15:44,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 01:15:44,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 01:15:44,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 01:15:44,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 01:15:44,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 01:15:44,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 01:15:44,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 01:15:44,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 01:15:44,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 01:15:44,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 01:15:44,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 01:15:44,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 01:15:44,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 01:15:44,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 01:15:44,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 01:15:44,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 01:15:44,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 01:15:44,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 01:15:44,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 01:15:44,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 01:15:44,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 01:15:44,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 01:15:44,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 01:15:44,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 01:15:44,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 01:15:44,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 01:15:44,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 01:15:44,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 01:15:44,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 01:15:44,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 01:15:44,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 01:15:44,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 01:15:44,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 01:15:44,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 01:15:44,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 01:15:44,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 01:15:44,551 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 01:15:44,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 01:15:44,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 01:15:44,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 01:15:44,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 01:15:44,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 01:15:44,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 01:15:44,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 01:15:44,554 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 01:15:44,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 01:15:44,554 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 01:15:44,555 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 01:15:44,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 01:15:44,556 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 01:15:44,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 01:15:44,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 01:15:44,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 01:15:44,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 01:15:44,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:15:44,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 01:15:44,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 01:15:44,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 01:15:44,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 01:15:44,558 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 01:15:44,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2023-02-18 01:15:44,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 01:15:44,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 01:15:44,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 01:15:44,763 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 01:15:44,763 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 01:15:44,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-18 01:15:45,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 01:15:45,908 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 01:15:45,908 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-18 01:15:45,912 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dafb8064/ad82d80b204248298071792e7241a059/FLAG0d448ff11 [2023-02-18 01:15:46,333 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dafb8064/ad82d80b204248298071792e7241a059 [2023-02-18 01:15:46,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 01:15:46,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 01:15:46,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 01:15:46,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 01:15:46,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 01:15:46,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcc2e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46, skipping insertion in model container [2023-02-18 01:15:46,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 01:15:46,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 01:15:46,434 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/bresenham-ll_unwindbound5.c[597,610] [2023-02-18 01:15:46,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:15:46,466 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 01:15:46,477 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/bresenham-ll_unwindbound5.c[597,610] [2023-02-18 01:15:46,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:15:46,505 INFO L208 MainTranslator]: Completed translation [2023-02-18 01:15:46,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46 WrapperNode [2023-02-18 01:15:46,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 01:15:46,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 01:15:46,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 01:15:46,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 01:15:46,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,527 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-18 01:15:46,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 01:15:46,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 01:15:46,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 01:15:46,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 01:15:46,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 01:15:46,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 01:15:46,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 01:15:46,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 01:15:46,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (1/1) ... [2023-02-18 01:15:46,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:15:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:46,585 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) [2023-02-18 01:15:46,593 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 [2023-02-18 01:15:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 01:15:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 01:15:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 01:15:46,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 01:15:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 01:15:46,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 01:15:46,653 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 01:15:46,655 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 01:15:46,760 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 01:15:46,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 01:15:46,764 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 01:15:46,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:15:46 BoogieIcfgContainer [2023-02-18 01:15:46,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 01:15:46,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 01:15:46,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 01:15:46,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 01:15:46,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:15:46" (1/3) ... [2023-02-18 01:15:46,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274b598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:15:46, skipping insertion in model container [2023-02-18 01:15:46,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:15:46" (2/3) ... [2023-02-18 01:15:46,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274b598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:15:46, skipping insertion in model container [2023-02-18 01:15:46,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:15:46" (3/3) ... [2023-02-18 01:15:46,779 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-02-18 01:15:46,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 01:15:46,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 01:15:46,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 01:15:46,822 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;@46cbdf1c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 01:15:46,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 01:15:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 01:15:46,832 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:46,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:46,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2023-02-18 01:15:46,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:46,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593214294] [2023-02-18 01:15:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:46,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:46,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:46,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962339618] [2023-02-18 01:15:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:46,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:46,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:46,903 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) [2023-02-18 01:15:46,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 01:15:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:15:46,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 01:15:46,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:47,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:15:47,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593214294] [2023-02-18 01:15:47,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962339618] [2023-02-18 01:15:47,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962339618] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:15:47,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:15:47,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 01:15:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156428548] [2023-02-18 01:15:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:15:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 01:15:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 01:15:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 01:15:47,101 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-02-18 01:15:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:47,227 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-18 01:15:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:15:47,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2023-02-18 01:15:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:47,234 INFO L225 Difference]: With dead ends: 54 [2023-02-18 01:15:47,234 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 01:15:47,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 01:15:47,241 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:47,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:15:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 01:15:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-18 01:15:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 01:15:47,264 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2023-02-18 01:15:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:47,264 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 01:15:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-02-18 01:15:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 01:15:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 01:15:47,265 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:47,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:47,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 01:15:47,470 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 [2023-02-18 01:15:47,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2023-02-18 01:15:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:47,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334280036] [2023-02-18 01:15:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:47,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:47,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:47,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867192670] [2023-02-18 01:15:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:47,485 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) [2023-02-18 01:15:47,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 01:15:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:15:47,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 01:15:47,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:47,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:15:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:47,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334280036] [2023-02-18 01:15:47,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867192670] [2023-02-18 01:15:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867192670] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:15:47,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:15:47,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-02-18 01:15:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248823033] [2023-02-18 01:15:47,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:15:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 01:15:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 01:15:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-18 01:15:47,840 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:48,078 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-02-18 01:15:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 01:15:48,079 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-18 01:15:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:48,079 INFO L225 Difference]: With dead ends: 42 [2023-02-18 01:15:48,079 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 01:15:48,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-02-18 01:15:48,081 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:48,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 50 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 01:15:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 01:15:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 01:15:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 01:15:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-18 01:15:48,092 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2023-02-18 01:15:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-18 01:15:48,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-18 01:15:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 01:15:48,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:48,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:48,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 01:15:48,300 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 [2023-02-18 01:15:48,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2023-02-18 01:15:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803958991] [2023-02-18 01:15:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:48,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758940871] [2023-02-18 01:15:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:48,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:48,325 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) [2023-02-18 01:15:48,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 01:15:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:15:48,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 01:15:48,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:48,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:15:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:48,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803958991] [2023-02-18 01:15:48,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:48,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758940871] [2023-02-18 01:15:48,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758940871] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:15:48,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:15:48,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 01:15:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800148256] [2023-02-18 01:15:48,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:15:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 01:15:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 01:15:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 01:15:48,400 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:48,446 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-18 01:15:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 01:15:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 01:15:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:48,450 INFO L225 Difference]: With dead ends: 73 [2023-02-18 01:15:48,450 INFO L226 Difference]: Without dead ends: 67 [2023-02-18 01:15:48,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:15:48,454 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:48,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 86 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:15:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-18 01:15:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-18 01:15:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 01:15:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-02-18 01:15:48,478 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2023-02-18 01:15:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:48,480 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-02-18 01:15:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:15:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-02-18 01:15:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 01:15:48,481 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:48,481 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:48,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 01:15:48,686 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 [2023-02-18 01:15:48,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2023-02-18 01:15:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:48,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305739374] [2023-02-18 01:15:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:48,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:48,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234278616] [2023-02-18 01:15:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:48,697 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) [2023-02-18 01:15:48,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 01:15:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:15:48,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-18 01:15:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:15:48,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:15:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 01:15:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305739374] [2023-02-18 01:15:49,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234278616] [2023-02-18 01:15:49,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234278616] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:15:49,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:15:49,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-18 01:15:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488063161] [2023-02-18 01:15:49,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:15:49,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 01:15:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 01:15:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-18 01:15:49,072 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:15:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:49,606 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-02-18 01:15:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 01:15:49,608 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2023-02-18 01:15:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:49,611 INFO L225 Difference]: With dead ends: 65 [2023-02-18 01:15:49,611 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 01:15:49,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-02-18 01:15:49,612 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:49,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 89 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 01:15:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 01:15:49,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-02-18 01:15:49,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:15:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-18 01:15:49,629 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2023-02-18 01:15:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:49,630 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-18 01:15:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:15:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-18 01:15:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 01:15:49,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:49,631 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:49,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 01:15:49,836 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 [2023-02-18 01:15:49,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2023-02-18 01:15:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142143675] [2023-02-18 01:15:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:49,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275830822] [2023-02-18 01:15:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:49,868 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) [2023-02-18 01:15:49,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 01:15:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:15:49,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 01:15:49,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:15:49,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:15:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:15:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142143675] [2023-02-18 01:15:49,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275830822] [2023-02-18 01:15:49,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275830822] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:15:49,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:15:49,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2023-02-18 01:15:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876799221] [2023-02-18 01:15:49,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:15:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 01:15:49,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 01:15:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-18 01:15:49,979 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 01:15:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:50,017 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-02-18 01:15:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 01:15:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2023-02-18 01:15:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:50,018 INFO L225 Difference]: With dead ends: 66 [2023-02-18 01:15:50,018 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 01:15:50,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-02-18 01:15:50,019 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:50,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:15:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 01:15:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 01:15:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 01:15:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2023-02-18 01:15:50,030 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2023-02-18 01:15:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:50,030 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2023-02-18 01:15:50,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 01:15:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2023-02-18 01:15:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 01:15:50,031 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:50,031 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:50,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 01:15:50,236 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 [2023-02-18 01:15:50,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -185688227, now seen corresponding path program 2 times [2023-02-18 01:15:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189505363] [2023-02-18 01:15:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:50,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:50,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355689928] [2023-02-18 01:15:50,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 01:15:50,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:50,252 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) [2023-02-18 01:15:50,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 01:15:50,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 01:15:50,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:15:50,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 01:15:50,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:15:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 01:15:50,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:15:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 01:15:51,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:15:51,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189505363] [2023-02-18 01:15:51,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:15:51,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355689928] [2023-02-18 01:15:51,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355689928] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:15:51,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:15:51,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-02-18 01:15:51,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205939742] [2023-02-18 01:15:51,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:15:51,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 01:15:51,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:15:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 01:15:51,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 01:15:51,307 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 01:15:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:15:52,061 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2023-02-18 01:15:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 01:15:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 59 [2023-02-18 01:15:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:15:52,062 INFO L225 Difference]: With dead ends: 120 [2023-02-18 01:15:52,062 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 01:15:52,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 01:15:52,064 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 01:15:52,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 192 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 01:15:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 01:15:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-02-18 01:15:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.125) internal successors, (90), 80 states have internal predecessors, (90), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 01:15:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2023-02-18 01:15:52,077 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 59 [2023-02-18 01:15:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:15:52,078 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2023-02-18 01:15:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 01:15:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2023-02-18 01:15:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 01:15:52,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:15:52,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:15:52,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 01:15:52,284 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 [2023-02-18 01:15:52,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:15:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:15:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash 494370143, now seen corresponding path program 1 times [2023-02-18 01:15:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:15:52,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935149223] [2023-02-18 01:15:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:15:52,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:15:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498239367] [2023-02-18 01:15:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:15:52,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:15:52,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:15:52,294 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) [2023-02-18 01:15:52,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 01:15:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 01:15:52,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 01:15:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 01:15:52,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 01:15:52,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 01:15:52,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 01:15:52,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 01:15:52,582 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 [2023-02-18 01:15:52,586 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-18 01:15:52,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 01:15:52,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:15:52 BoogieIcfgContainer [2023-02-18 01:15:52,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 01:15:52,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 01:15:52,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 01:15:52,620 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 01:15:52,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:15:46" (3/4) ... [2023-02-18 01:15:52,622 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 01:15:52,664 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 01:15:52,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 01:15:52,665 INFO L158 Benchmark]: Toolchain (without parser) took 6329.00ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 126.9MB in the beginning and 99.3MB in the end (delta: 27.6MB). Peak memory consumption was 113.5MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,665 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:15:52,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.09ms. Allocated memory is still 174.1MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.10ms. Allocated memory is still 174.1MB. Free memory was 116.4MB in the beginning and 114.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,666 INFO L158 Benchmark]: Boogie Preprocessor took 21.08ms. Allocated memory is still 174.1MB. Free memory was 114.8MB in the beginning and 113.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,666 INFO L158 Benchmark]: RCFGBuilder took 216.48ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 103.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,666 INFO L158 Benchmark]: TraceAbstraction took 5852.77ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 103.0MB in the beginning and 103.5MB in the end (delta: -533.2kB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,667 INFO L158 Benchmark]: Witness Printer took 44.46ms. Allocated memory is still 257.9MB. Free memory was 103.5MB in the beginning and 99.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 01:15:52,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.09ms. Allocated memory is still 174.1MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.10ms. Allocated memory is still 174.1MB. Free memory was 116.4MB in the beginning and 114.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.08ms. Allocated memory is still 174.1MB. Free memory was 114.8MB in the beginning and 113.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.48ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 103.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5852.77ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 103.0MB in the beginning and 103.5MB in the end (delta: -533.2kB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. * Witness Printer took 44.46ms. Allocated memory is still 257.9MB. Free memory was 103.5MB in the beginning and 99.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-13, x=0, X=17, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-13, x=0, X=17, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-13, x=0, x=0, X=17, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-13, x=0, x=0, X=17, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-13, x=0, X=17, x=0, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-9, x=0, x=0, X=17, x=0, y=0, Y=2] [L45] x++ VAL [counter=1, v=-9, x=0, x=0, X=17, x=1, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-9, x=1, x=0, X=17, x=0, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-9, x=2, x=1, X=17, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-9, x=2, X=17, x=0, x=1, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-9, x=1, X=17, x=2, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-5, x=0, x=1, x=2, X=17, Y=2, y=0] [L45] x++ VAL [counter=2, v=-5, x=0, X=17, x=2, x=2, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-5, x=2, x=0, X=17, x=2, y=0, Y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-5, x=4, x=0, x=2, X=17, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-5, x=2, x=4, x=0, X=17, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-5, X=17, x=2, x=4, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-1, x=2, x=0, X=17, x=4, y=0, Y=2] [L45] x++ VAL [counter=3, v=-1, x=3, x=0, x=4, X=17, Y=2, y=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-1, x=0, x=3, x=4, X=17, y=0, Y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-1, x=0, x=6, x=3, X=17, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-1, x=3, x=0, X=17, x=6, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-1, x=0, x=3, x=6, X=17, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=3, X=17, x=6, x=0, x=3, Y=2, y=0] [L45] x++ VAL [counter=4, v=3, X=17, x=0, x=6, x=4, y=0, Y=2] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=3, x=4, X=17, x=6, x=0, y=0, Y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=3, X=17, x=4, x=0, x=8, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=3, x=0, x=4, X=17, x=8, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=3, x=0, X=17, x=4, x=8, y=0, Y=2] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=5, v=-27, x=0, x=4, x=8, X=17, y=1, Y=2] [L45] x++ VAL [counter=5, v=-27, x=0, x=8, X=17, x=5, y=1, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-27, x=5, x=8, x=0, X=17, Y=2, y=1] [L31] COND FALSE !(counter++<5) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=6, v=-27, X=17, x=5, x=10, x=5, Y=2, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=6] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=6] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 183 mSDsluCounter, 567 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 474 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1406 IncrementalHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 93 mSDtfsCounter, 1406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 244 SyntacticMatches, 10 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=6, InterpolantAutomatonStates: 96, 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, 6 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 4391 SizeOfPredicates, 35 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 157/434 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 RESULT: Ultimate proved your program to be incorrect! [2023-02-18 01:15:52,683 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE