./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 [2023-02-17 01:26:44,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:26:44,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:26:44,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:26:44,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:26:44,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:26:44,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:26:44,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:26:44,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:26:44,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:26:44,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:26:44,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:26:44,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:26:44,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:26:44,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:26:44,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:26:44,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:26:44,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:26:44,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:26:44,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:26:44,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:26:44,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:26:44,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:26:44,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:26:44,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:26:44,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:26:44,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:26:44,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:26:44,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:26:44,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:26:44,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:26:44,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:26:44,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:26:44,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:26:44,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:26:44,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:26:44,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:26:44,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:26:44,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:26:44,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:26:44,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:26:44,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:26:44,766 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:26:44,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:26:44,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:26:44,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:26:44,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:26:44,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:26:44,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:26:44,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:26:44,768 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:26:44,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:26:44,769 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:26:44,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:26:44,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:26:44,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:26:44,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:26:44,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:26:44,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:26:44,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:26:44,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:26:44,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:26:44,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:26:44,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:26:44,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:26:44,773 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:26:44,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2023-02-17 01:26:44,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:26:44,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:26:44,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:26:44,943 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:26:44,943 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:26:44,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-17 01:26:45,925 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:26:46,097 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:26:46,098 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-17 01:26:46,112 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6270ec3a/b2cbd5f719ef4e68b7efaf5b26df773a/FLAG81dd3d07e [2023-02-17 01:26:46,130 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6270ec3a/b2cbd5f719ef4e68b7efaf5b26df773a [2023-02-17 01:26:46,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:26:46,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:26:46,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:26:46,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:26:46,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:26:46,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42edca90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46, skipping insertion in model container [2023-02-17 01:26:46,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:26:46,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:26:46,252 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] [2023-02-17 01:26:46,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:26:46,275 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:26:46,285 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] [2023-02-17 01:26:46,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:26:46,307 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:26:46,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46 WrapperNode [2023-02-17 01:26:46,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:26:46,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:26:46,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:26:46,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:26:46,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,340 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-17 01:26:46,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:26:46,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:26:46,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:26:46,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:26:46,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:26:46,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:26:46,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:26:46,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:26:46,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (1/1) ... [2023-02-17 01:26:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:26:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:46,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 01:26:46,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 01:26:46,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:26:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:26:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:26:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:26:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:26:46,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:26:46,461 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:26:46,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:26:46,589 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:26:46,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:26:46,597 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 01:26:46,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:46 BoogieIcfgContainer [2023-02-17 01:26:46,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:26:46,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:26:46,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:26:46,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:26:46,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:26:46" (1/3) ... [2023-02-17 01:26:46,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e04984b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:26:46, skipping insertion in model container [2023-02-17 01:26:46,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:46" (2/3) ... [2023-02-17 01:26:46,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e04984b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:26:46, skipping insertion in model container [2023-02-17 01:26:46,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:46" (3/3) ... [2023-02-17 01:26:46,610 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-02-17 01:26:46,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:26:46,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:26:46,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:26:46,718 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;@3b5df749, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:26:46,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:26:46,727 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) [2023-02-17 01:26:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 01:26:46,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:46,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:46,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2023-02-17 01:26:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312419577] [2023-02-17 01:26:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:46,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043231898] [2023-02-17 01:26:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:46,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:46,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:26:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:46,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 01:26:46,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:46,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:26:46,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:46,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312419577] [2023-02-17 01:26:46,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:46,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043231898] [2023-02-17 01:26:46,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043231898] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:26:46,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:26:46,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 01:26:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675299353] [2023-02-17 01:26:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:26:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:26:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:26:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:26:46,981 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) [2023-02-17 01:26:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:47,048 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-17 01:26:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:26:47,050 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 [2023-02-17 01:26:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:47,054 INFO L225 Difference]: With dead ends: 54 [2023-02-17 01:26:47,055 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 01:26:47,056 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 [2023-02-17 01:26:47,059 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:26:47,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:26:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 01:26:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-17 01:26:47,081 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) [2023-02-17 01:26:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-17 01:26:47,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2023-02-17 01:26:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-17 01:26:47,083 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) [2023-02-17 01:26:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-17 01:26:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 01:26:47,084 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:47,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:47,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:47,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 01:26:47,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2023-02-17 01:26:47,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:47,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166940240] [2023-02-17 01:26:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:47,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:47,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791433620] [2023-02-17 01:26:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:47,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:47,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:47,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:47,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:26:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:47,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-17 01:26:47,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:47,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:47,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166940240] [2023-02-17 01:26:47,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791433620] [2023-02-17 01:26:47,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791433620] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:47,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:47,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-02-17 01:26:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790090235] [2023-02-17 01:26:47,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:47,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 01:26:47,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:47,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 01:26:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-17 01:26:47,616 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) [2023-02-17 01:26:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:47,871 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-02-17 01:26:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 01:26:47,872 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 [2023-02-17 01:26:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:47,872 INFO L225 Difference]: With dead ends: 42 [2023-02-17 01:26:47,873 INFO L226 Difference]: Without dead ends: 35 [2023-02-17 01:26:47,873 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 [2023-02-17 01:26:47,874 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-17 01:26:47,874 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] [2023-02-17 01:26:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-17 01:26:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-17 01:26:47,879 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) [2023-02-17 01:26:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-17 01:26:47,880 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2023-02-17 01:26:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:47,881 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-17 01:26:47,881 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) [2023-02-17 01:26:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-17 01:26:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 01:26:47,882 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:47,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:47,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 01:26:48,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2023-02-17 01:26:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369519151] [2023-02-17 01:26:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:48,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:48,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953813735] [2023-02-17 01:26:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:48,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:48,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:48,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:48,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:26:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:48,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 01:26:48,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:48,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:48,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369519151] [2023-02-17 01:26:48,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:48,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953813735] [2023-02-17 01:26:48,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953813735] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:48,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-17 01:26:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461806220] [2023-02-17 01:26:48,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 01:26:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 01:26:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:26:48,201 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) [2023-02-17 01:26:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:48,246 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-17 01:26:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 01:26:48,246 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 [2023-02-17 01:26:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:48,247 INFO L225 Difference]: With dead ends: 73 [2023-02-17 01:26:48,247 INFO L226 Difference]: Without dead ends: 67 [2023-02-17 01:26:48,247 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 [2023-02-17 01:26:48,248 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 [2023-02-17 01:26:48,249 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] [2023-02-17 01:26:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-17 01:26:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-17 01:26:48,256 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) [2023-02-17 01:26:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-02-17 01:26:48,257 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2023-02-17 01:26:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:48,258 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-02-17 01:26:48,258 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) [2023-02-17 01:26:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-02-17 01:26:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 01:26:48,259 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:48,259 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:48,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:48,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2023-02-17 01:26:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863207094] [2023-02-17 01:26:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:48,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:48,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544631443] [2023-02-17 01:26:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:48,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:48,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:48,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:48,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:26:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:48,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 01:26:48,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:26:48,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 01:26:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863207094] [2023-02-17 01:26:48,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544631443] [2023-02-17 01:26:48,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544631443] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:48,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:48,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-17 01:26:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494814603] [2023-02-17 01:26:48,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:26:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:26:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-17 01:26:48,861 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) [2023-02-17 01:26:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:49,379 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-02-17 01:26:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 01:26:49,380 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 [2023-02-17 01:26:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:49,380 INFO L225 Difference]: With dead ends: 65 [2023-02-17 01:26:49,381 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 01:26:49,381 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 [2023-02-17 01:26:49,382 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 01:26:49,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 89 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 01:26:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 01:26:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-02-17 01:26:49,390 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) [2023-02-17 01:26:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-17 01:26:49,391 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2023-02-17 01:26:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:49,391 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-17 01:26:49,391 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) [2023-02-17 01:26:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-17 01:26:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-17 01:26:49,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:49,392 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:49,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:49,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:49,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:49,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2023-02-17 01:26:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:49,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674539378] [2023-02-17 01:26:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:49,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:49,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709107893] [2023-02-17 01:26:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:49,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:49,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:49,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:26:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:49,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 01:26:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:26:49,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:26:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:49,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674539378] [2023-02-17 01:26:49,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:49,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709107893] [2023-02-17 01:26:49,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709107893] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:49,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:49,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2023-02-17 01:26:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740740915] [2023-02-17 01:26:49,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:49,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 01:26:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 01:26:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:26:49,729 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) [2023-02-17 01:26:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:49,772 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-02-17 01:26:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 01:26:49,773 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 [2023-02-17 01:26:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:49,775 INFO L225 Difference]: With dead ends: 66 [2023-02-17 01:26:49,775 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 01:26:49,775 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 [2023-02-17 01:26:49,778 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 [2023-02-17 01:26:49,779 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] [2023-02-17 01:26:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 01:26:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-17 01:26:49,797 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) [2023-02-17 01:26:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2023-02-17 01:26:49,798 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2023-02-17 01:26:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:49,798 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2023-02-17 01:26:49,798 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) [2023-02-17 01:26:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2023-02-17 01:26:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-17 01:26:49,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:49,799 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:49,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:50,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash -185688227, now seen corresponding path program 2 times [2023-02-17 01:26:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:50,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489830144] [2023-02-17 01:26:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:50,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949470851] [2023-02-17 01:26:50,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:26:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:50,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:50,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 01:26:50,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:26:50,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:26:50,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 01:26:50,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 01:26:50,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 01:26:51,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489830144] [2023-02-17 01:26:51,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949470851] [2023-02-17 01:26:51,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949470851] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:51,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:51,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-02-17 01:26:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273568769] [2023-02-17 01:26:51,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 01:26:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 01:26:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 01:26:51,044 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) [2023-02-17 01:26:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:51,806 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2023-02-17 01:26:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-17 01:26:51,808 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 [2023-02-17 01:26:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:51,809 INFO L225 Difference]: With dead ends: 120 [2023-02-17 01:26:51,809 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 01:26:51,810 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 [2023-02-17 01:26:51,810 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2023-02-17 01:26:51,811 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] [2023-02-17 01:26:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 01:26:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-02-17 01:26:51,841 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) [2023-02-17 01:26:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2023-02-17 01:26:51,842 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 59 [2023-02-17 01:26:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:51,843 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2023-02-17 01:26:51,844 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) [2023-02-17 01:26:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2023-02-17 01:26:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-17 01:26:51,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:51,852 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:51,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:52,062 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:52,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 494370143, now seen corresponding path program 1 times [2023-02-17 01:26:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:52,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703454403] [2023-02-17 01:26:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:52,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:52,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:52,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016124824] [2023-02-17 01:26:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:52,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:52,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:52,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:52,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 01:26:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 01:26:52,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 01:26:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 01:26:52,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 01:26:52,182 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 01:26:52,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:26:52,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:52,387 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-17 01:26:52,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:26:52,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:26:52 BoogieIcfgContainer [2023-02-17 01:26:52,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:26:52,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:26:52,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:26:52,421 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:26:52,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:46" (3/4) ... [2023-02-17 01:26:52,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 01:26:52,459 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:26:52,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:26:52,460 INFO L158 Benchmark]: Toolchain (without parser) took 6327.79ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 110.3MB in the beginning and 96.7MB in the end (delta: 13.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,460 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:26:52,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.74ms. Allocated memory is still 157.3MB. Free memory was 110.3MB in the beginning and 99.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.18ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 98.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,461 INFO L158 Benchmark]: Boogie Preprocessor took 12.46ms. Allocated memory is still 157.3MB. Free memory was 98.1MB in the beginning and 97.3MB in the end (delta: 794.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,461 INFO L158 Benchmark]: RCFGBuilder took 244.88ms. Allocated memory is still 157.3MB. Free memory was 97.3MB in the beginning and 86.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,461 INFO L158 Benchmark]: TraceAbstraction took 5820.34ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 85.6MB in the beginning and 99.9MB in the end (delta: -14.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,462 INFO L158 Benchmark]: Witness Printer took 38.74ms. Allocated memory is still 188.7MB. Free memory was 99.9MB in the beginning and 96.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:26:52,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.74ms. Allocated memory is still 157.3MB. Free memory was 110.3MB in the beginning and 99.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.18ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 98.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.46ms. Allocated memory is still 157.3MB. Free memory was 98.1MB in the beginning and 97.3MB in the end (delta: 794.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 244.88ms. Allocated memory is still 157.3MB. Free memory was 97.3MB in the beginning and 86.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5820.34ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 85.6MB in the beginning and 99.9MB in the end (delta: -14.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 38.74ms. Allocated memory is still 188.7MB. Free memory was 99.9MB in the beginning and 96.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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=17, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-13, 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=1, v=-13, x=0, X=17, x=0, x=0, y=0, Y=2] [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=0, X=17, 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=2, y=0] [L45] x++ VAL [counter=1, v=-9, x=1, x=0, x=0, X=17, 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=17, x=1, x=2, x=0, y=0, Y=2] [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=17, x=1, x=0, x=2, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-9, x=0, X=17, x=1, x=2, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-5, x=0, X=17, x=2, x=1, Y=2, y=0] [L45] x++ VAL [counter=2, v=-5, x=2, x=0, X=17, x=2, y=0, Y=2] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-5, X=17, x=2, x=0, 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=17, x=2, 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=17, x=0, x=2, x=4, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-5, x=2, x=4, x=0, X=17, y=0, Y=2] [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=0, X=17, x=3, x=4, y=0, Y=2] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-1, x=3, x=0, X=17, x=4, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-1, X=17, x=6, x=0, x=3, y=0, Y=2] [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=6, x=0, x=3, X=17, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-1, x=0, x=3, X=17, x=6, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=3, x=6, x=0, X=17, x=3, y=0, Y=2] [L45] x++ VAL [counter=4, v=3, X=17, x=6, x=0, x=4, y=0, Y=2] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=3, X=17, x=0, x=6, x=4, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=3, x=0, x=4, X=17, x=8, Y=2, y=0] [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=4, X=17, x=8, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=3, x=8, X=17, x=4, x=0, Y=2, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=5, v=-27, x=8, x=4, X=17, x=0, Y=2, y=1] [L45] x++ VAL [counter=5, v=-27, x=8, X=17, x=5, x=0, Y=2, y=1] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-27, x=8, x=5, 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=5, X=17, x=5, x=10, 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: 5.7s, 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, 1.0s 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, 1.8s 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, 0.1s 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! [2023-02-17 01:26:52,485 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