./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 574ddb4e 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-?-574ddb4 [2023-02-18 16:32:32,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:32:32,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:32:32,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:32:32,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:32:32,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:32:32,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:32:32,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:32:32,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:32:32,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:32:32,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:32:32,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:32:32,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:32:32,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:32:32,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:32:32,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:32:32,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:32:32,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:32:32,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:32:32,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:32:32,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:32:32,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:32:32,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:32:32,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:32:32,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:32:32,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:32:32,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:32:32,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:32:32,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:32:32,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:32:32,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:32:32,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:32:32,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:32:32,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:32:32,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:32:32,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:32:32,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:32:32,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:32:32,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:32:32,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:32:32,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:32:32,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:32:32,267 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:32:32,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:32:32,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:32:32,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:32:32,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:32:32,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:32:32,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:32:32,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:32:32,270 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:32:32,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:32:32,271 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:32:32,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:32:32,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:32:32,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:32:32,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:32:32,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:32:32,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:32:32,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:32:32,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:32:32,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:32:32,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:32:32,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:32:32,275 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2023-02-18 16:32:32,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:32:32,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:32:32,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:32:32,492 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:32:32,492 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:32:32,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-18 16:32:33,488 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:32:33,617 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:32:33,617 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-02-18 16:32:33,621 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454ce8e1a/0d8f9b6cb003442597d99e45beba5704/FLAGa3c7d239f [2023-02-18 16:32:33,629 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454ce8e1a/0d8f9b6cb003442597d99e45beba5704 [2023-02-18 16:32:33,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:32:33,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:32:33,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:32:33,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:32:33,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:32:33,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ee27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33, skipping insertion in model container [2023-02-18 16:32:33,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:32:33,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:32:33,727 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2023-02-18 16:32:33,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:32:33,742 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:32:33,749 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2023-02-18 16:32:33,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:32:33,771 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:32:33,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33 WrapperNode [2023-02-18 16:32:33,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:32:33,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:32:33,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:32:33,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:32:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,795 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-18 16:32:33,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:32:33,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:32:33,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:32:33,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:32:33,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:32:33,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:32:33,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:32:33,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:32:33,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (1/1) ... [2023-02-18 16:32:33,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:32:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:33,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 16:32:33,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 16:32:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:32:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:32:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:32:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:32:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:32:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:32:33,908 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:32:33,909 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:32:33,990 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:32:33,993 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:32:33,994 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 16:32:33,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:32:33 BoogieIcfgContainer [2023-02-18 16:32:33,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:32:33,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:32:33,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:32:33,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:32:33,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:32:33" (1/3) ... [2023-02-18 16:32:33,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295c5511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:32:33, skipping insertion in model container [2023-02-18 16:32:33,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:32:33" (2/3) ... [2023-02-18 16:32:33,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295c5511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:32:33, skipping insertion in model container [2023-02-18 16:32:34,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:32:33" (3/3) ... [2023-02-18 16:32:34,000 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-02-18 16:32:34,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:32:34,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:32:34,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:32:34,098 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;@15e2acab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:32:34,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:32:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 16:32:34,105 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:34,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:34,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2023-02-18 16:32:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:34,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17236688] [2023-02-18 16:32:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:34,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:34,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066820599] [2023-02-18 16:32:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:34,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:34,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:34,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:32:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:32:34,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 16:32:34,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:34,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:32:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:34,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17236688] [2023-02-18 16:32:34,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066820599] [2023-02-18 16:32:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066820599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:32:34,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:32:34,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 16:32:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600995954] [2023-02-18 16:32:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:32:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 16:32:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 16:32:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 16:32:34,357 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:32:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:34,476 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-18 16:32:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:32:34,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 16:32:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:34,483 INFO L225 Difference]: With dead ends: 54 [2023-02-18 16:32:34,484 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 16:32:34,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 16:32:34,490 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:34,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:32:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 16:32:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-18 16:32:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 16:32:34,513 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2023-02-18 16:32:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:34,514 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 16:32:34,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:32:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 16:32:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 16:32:34,515 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:34,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:34,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 16:32:34,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2023-02-18 16:32:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221559261] [2023-02-18 16:32:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:34,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:34,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952333831] [2023-02-18 16:32:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:34,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:34,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:34,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:34,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 16:32:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:32:34,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 16:32:34,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:34,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:32:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:35,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221559261] [2023-02-18 16:32:35,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:35,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952333831] [2023-02-18 16:32:35,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952333831] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:32:35,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:32:35,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-18 16:32:35,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411392236] [2023-02-18 16:32:35,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:32:35,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 16:32:35,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 16:32:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-18 16:32:35,165 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:35,389 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-18 16:32:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 16:32:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-18 16:32:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:35,390 INFO L225 Difference]: With dead ends: 41 [2023-02-18 16:32:35,390 INFO L226 Difference]: Without dead ends: 34 [2023-02-18 16:32:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-02-18 16:32:35,392 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:35,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 16:32:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-18 16:32:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-18 16:32:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 16:32:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-18 16:32:35,397 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2023-02-18 16:32:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:35,397 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-18 16:32:35,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-18 16:32:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 16:32:35,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:35,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:35,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:35,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 16:32:35,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2023-02-18 16:32:35,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:35,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313045459] [2023-02-18 16:32:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:35,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:35,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354415048] [2023-02-18 16:32:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:35,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:35,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:35,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:35,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 16:32:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:32:35,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 16:32:35,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:35,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:32:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:35,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313045459] [2023-02-18 16:32:35,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:35,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354415048] [2023-02-18 16:32:35,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354415048] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:32:35,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:32:35,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 16:32:35,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772658547] [2023-02-18 16:32:35,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:32:35,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:32:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:35,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:32:35,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 16:32:35,674 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:35,707 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-18 16:32:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 16:32:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 16:32:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:35,708 INFO L225 Difference]: With dead ends: 73 [2023-02-18 16:32:35,708 INFO L226 Difference]: Without dead ends: 67 [2023-02-18 16:32:35,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-18 16:32:35,709 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:35,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 106 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:32:35,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-18 16:32:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-18 16:32:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 16:32:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-02-18 16:32:35,716 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2023-02-18 16:32:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:35,716 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-02-18 16:32:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:32:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-02-18 16:32:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 16:32:35,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:35,717 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:35,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:35,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:35,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2023-02-18 16:32:35,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:35,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187283183] [2023-02-18 16:32:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:35,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:35,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008669670] [2023-02-18 16:32:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:35,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:35,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:35,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 16:32:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:32:35,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 16:32:35,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 16:32:36,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:32:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 16:32:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187283183] [2023-02-18 16:32:36,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008669670] [2023-02-18 16:32:36,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008669670] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:32:36,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:32:36,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-18 16:32:36,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754654970] [2023-02-18 16:32:36,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:32:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 16:32:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 16:32:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-18 16:32:36,354 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 16:32:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:36,819 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-02-18 16:32:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 16:32:36,820 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2023-02-18 16:32:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:36,821 INFO L225 Difference]: With dead ends: 65 [2023-02-18 16:32:36,821 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 16:32:36,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-02-18 16:32:36,822 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:36,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 78 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 16:32:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 16:32:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-02-18 16:32:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 16:32:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-18 16:32:36,832 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2023-02-18 16:32:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:36,832 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-18 16:32:36,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 16:32:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-18 16:32:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 16:32:36,833 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:36,833 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:36,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:37,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:37,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2023-02-18 16:32:37,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:37,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161581768] [2023-02-18 16:32:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:37,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804652087] [2023-02-18 16:32:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:37,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:37,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 16:32:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:32:37,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 16:32:37,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:32:37,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:32:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 16:32:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:37,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161581768] [2023-02-18 16:32:37,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:37,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804652087] [2023-02-18 16:32:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804652087] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:32:37,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:32:37,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2023-02-18 16:32:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765142863] [2023-02-18 16:32:37,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:32:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:32:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:32:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-18 16:32:37,157 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 16:32:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:37,200 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-02-18 16:32:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 16:32:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2023-02-18 16:32:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:37,202 INFO L225 Difference]: With dead ends: 66 [2023-02-18 16:32:37,202 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 16:32:37,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-02-18 16:32:37,204 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:37,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:32:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 16:32:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 16:32:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 16:32:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2023-02-18 16:32:37,222 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2023-02-18 16:32:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:37,223 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2023-02-18 16:32:37,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 16:32:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2023-02-18 16:32:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 16:32:37,224 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:37,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:37,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:37,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:37,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash -185688227, now seen corresponding path program 2 times [2023-02-18 16:32:37,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:37,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506636513] [2023-02-18 16:32:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:37,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:37,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440763214] [2023-02-18 16:32:37,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 16:32:37,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:37,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:37,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:37,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 16:32:37,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 16:32:37,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 16:32:37,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 16:32:37,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:32:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 71 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 16:32:37,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:32:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 71 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 16:32:38,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:32:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506636513] [2023-02-18 16:32:38,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:32:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440763214] [2023-02-18 16:32:38,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440763214] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:32:38,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:32:38,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-02-18 16:32:38,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175289530] [2023-02-18 16:32:38,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:32:38,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 16:32:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:32:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 16:32:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 16:32:38,542 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 16:32:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:32:39,351 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2023-02-18 16:32:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 16:32:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 59 [2023-02-18 16:32:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:32:39,352 INFO L225 Difference]: With dead ends: 120 [2023-02-18 16:32:39,352 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 16:32:39,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 16:32:39,353 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 16:32:39,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 182 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 16:32:39,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 16:32:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-02-18 16:32:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.125) internal successors, (90), 80 states have internal predecessors, (90), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 16:32:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2023-02-18 16:32:39,375 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 59 [2023-02-18 16:32:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:32:39,375 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2023-02-18 16:32:39,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 16:32:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2023-02-18 16:32:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 16:32:39,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:32:39,381 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:32:39,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:39,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:32:39,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:32:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash 494370143, now seen corresponding path program 1 times [2023-02-18 16:32:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:32:39,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092247394] [2023-02-18 16:32:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:32:39,592 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:32:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464615474] [2023-02-18 16:32:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:32:39,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:32:39,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:32:39,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 16:32:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:32:39,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 16:32:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:32:39,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 16:32:39,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 16:32:39,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:32:39,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 16:32:39,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:32:39,916 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-18 16:32:39,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:32:39,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:32:39 BoogieIcfgContainer [2023-02-18 16:32:39,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:32:39,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:32:39,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:32:39,950 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:32:39,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:32:33" (3/4) ... [2023-02-18 16:32:39,951 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 16:32:39,993 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:32:39,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:32:39,994 INFO L158 Benchmark]: Toolchain (without parser) took 6362.11ms. Allocated memory was 121.6MB in the beginning and 182.5MB in the end (delta: 60.8MB). Free memory was 86.0MB in the beginning and 147.8MB in the end (delta: -61.9MB). Peak memory consumption was 539.7kB. Max. memory is 16.1GB. [2023-02-18 16:32:39,994 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 91.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:32:39,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.88ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 74.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:32:39,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.76ms. Allocated memory is still 121.6MB. Free memory was 74.9MB in the beginning and 73.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:32:39,995 INFO L158 Benchmark]: Boogie Preprocessor took 24.78ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 72.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:32:39,995 INFO L158 Benchmark]: RCFGBuilder took 173.65ms. Allocated memory is still 121.6MB. Free memory was 72.1MB in the beginning and 62.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:32:39,995 INFO L158 Benchmark]: TraceAbstraction took 5953.27ms. Allocated memory was 121.6MB in the beginning and 182.5MB in the end (delta: 60.8MB). Free memory was 61.6MB in the beginning and 151.0MB in the end (delta: -89.4MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2023-02-18 16:32:39,996 INFO L158 Benchmark]: Witness Printer took 43.78ms. Allocated memory is still 182.5MB. Free memory was 151.0MB in the beginning and 147.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 16:32:39,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 91.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.88ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 74.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.76ms. Allocated memory is still 121.6MB. Free memory was 74.9MB in the beginning and 73.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.78ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 72.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 173.65ms. Allocated memory is still 121.6MB. Free memory was 72.1MB in the beginning and 62.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5953.27ms. Allocated memory was 121.6MB in the beginning and 182.5MB in the end (delta: 60.8MB). Free memory was 61.6MB in the beginning and 151.0MB in the end (delta: -89.4MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 43.78ms. Allocated memory is still 182.5MB. Free memory was 151.0MB in the beginning and 147.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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=0, X=17, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-13, x=0, x=0, x=0, X=17, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=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=0, X=17, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-13, X=17, x=0, x=0, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-9, X=17, x=0, x=0, x=0, y=0, Y=2] [L45] x++ VAL [counter=1, v=-9, x=0, x=1, x=0, X=17, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-9, x=0, X=17, x=1, x=0, y=0, Y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-9, x=2, X=17, x=1, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-9, x=0, X=17, x=2, x=1, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-9, x=2, x=0, X=17, x=1, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-5, x=1, x=2, x=0, X=17, Y=2, y=0] [L45] x++ VAL [counter=2, v=-5, x=2, x=2, x=0, X=17, y=0, Y=2] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-5, x=2, x=2, x=0, X=17, Y=2, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-5, x=0, x=2, X=17, x=4, Y=2, y=0] [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=4, x=0, x=2, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-5, x=4, X=17, x=2, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-1, X=17, x=0, x=2, x=4, y=0, Y=2] [L45] x++ VAL [counter=3, v=-1, x=0, X=17, x=4, x=3, Y=2, y=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-1, x=4, X=17, x=0, x=3, y=0, Y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-1, x=0, X=17, x=6, 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=17, x=0, x=3, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-1, x=3, x=6, X=17, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=3, x=6, x=0, x=3, X=17, y=0, Y=2] [L45] x++ VAL [counter=4, v=3, x=4, X=17, x=0, x=6, Y=2, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=3, x=0, x=4, X=17, x=6, 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=8, x=0, X=17, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=3, X=17, x=8, x=0, x=4, 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=4, x=0, x=8, X=17, Y=2, y=1] [L45] x++ VAL [counter=5, v=-27, x=8, X=17, x=0, x=5, Y=2, y=1] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-27, X=17, x=8, x=0, x=5, y=1, Y=2] [L31] COND FALSE !(counter++<5) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=6, v=-27, X=17, x=5, x=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: 5.9s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 183 mSDsluCounter, 580 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 487 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1414 IncrementalHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 93 mSDtfsCounter, 1414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 242 SyntacticMatches, 13 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=6, InterpolantAutomatonStates: 95, 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, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 337 ConstructedInterpolants, 4 QuantifiedInterpolants, 4568 SizeOfPredicates, 35 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 164/434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-18 16:32:40,011 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