./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_unwindbound1.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 f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:04:59,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:04:59,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:04:59,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:04:59,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:04:59,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:04:59,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:04:59,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:04:59,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:04:59,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:04:59,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:04:59,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:04:59,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:04:59,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:04:59,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:04:59,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:04:59,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:04:59,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:04:59,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:04:59,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:04:59,396 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:04:59,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:04:59,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:04:59,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:04:59,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:04:59,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:04:59,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:04:59,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:04:59,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:04:59,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:04:59,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:04:59,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:04:59,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:04:59,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:04:59,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:04:59,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:04:59,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:04:59,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:04:59,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:04:59,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:04:59,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:04:59,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:04:59,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:04:59,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:04:59,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:04:59,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:04:59,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:04:59,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:04:59,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:04:59,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:04:59,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:04:59,460 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:04:59,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:04:59,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:04:59,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:04:59,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:04:59,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:04:59,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:04:59,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:04:59,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:04:59,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:04:59,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:04:59,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:04:59,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:04:59,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:04:59,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:04:59,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:04:59,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:04:59,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:04:59,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:04:59,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:04:59,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:04:59,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:04:59,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:04:59,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:04:59,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:04:59,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a [2022-07-21 03:04:59,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:04:59,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:04:59,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:04:59,749 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:04:59,749 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:04:59,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-07-21 03:04:59,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656735ddf/5d2d312282cc46629e6b6c82106ac9f9/FLAG7e3866e05 [2022-07-21 03:05:00,245 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:05:00,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-07-21 03:05:00,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656735ddf/5d2d312282cc46629e6b6c82106ac9f9/FLAG7e3866e05 [2022-07-21 03:05:00,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656735ddf/5d2d312282cc46629e6b6c82106ac9f9 [2022-07-21 03:05:00,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:05:00,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:05:00,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:05:00,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:05:00,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:05:00,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fe6d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00, skipping insertion in model container [2022-07-21 03:05:00,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:05:00,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:05:00,402 WARN L230 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_unwindbound1.c[597,610] [2022-07-21 03:05:00,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:05:00,425 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:05:00,465 WARN L230 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_unwindbound1.c[597,610] [2022-07-21 03:05:00,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:05:00,483 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:05:00,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00 WrapperNode [2022-07-21 03:05:00,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:05:00,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:05:00,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:05:00,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:05:00,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,508 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-21 03:05:00,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:05:00,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:05:00,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:05:00,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:05:00,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:05:00,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:05:00,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:05:00,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:05:00,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (1/1) ... [2022-07-21 03:05:00,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:05:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:00,552 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) [2022-07-21 03:05:00,562 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 [2022-07-21 03:05:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:05:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:05:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:05:00,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:05:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:05:00,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:05:00,644 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:05:00,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:05:00,797 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:05:00,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:05:00,806 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:05:00,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:05:00 BoogieIcfgContainer [2022-07-21 03:05:00,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:05:00,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:05:00,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:05:00,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:05:00,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:05:00" (1/3) ... [2022-07-21 03:05:00,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45057965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:05:00, skipping insertion in model container [2022-07-21 03:05:00,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:00" (2/3) ... [2022-07-21 03:05:00,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45057965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:05:00, skipping insertion in model container [2022-07-21 03:05:00,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:05:00" (3/3) ... [2022-07-21 03:05:00,815 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2022-07-21 03:05:00,827 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:05:00,827 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:05:00,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:05:00,895 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@597b0640, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@734647ed [2022-07-21 03:05:00,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:05:00,906 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) [2022-07-21 03:05:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:05:00,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:00,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:00,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-07-21 03:05:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:00,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869587580] [2022-07-21 03:05:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:01,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941232127] [2022-07-21 03:05:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:01,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:01,036 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) [2022-07-21 03:05:01,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:05:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:01,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 03:05:01,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:01,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:05:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869587580] [2022-07-21 03:05:01,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941232127] [2022-07-21 03:05:01,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941232127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:05:01,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:05:01,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 03:05:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971113199] [2022-07-21 03:05:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:05:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:05:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:05:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:05:01,359 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) [2022-07-21 03:05:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:01,470 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-07-21 03:05:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:05:01,472 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 [2022-07-21 03:05:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:01,478 INFO L225 Difference]: With dead ends: 54 [2022-07-21 03:05:01,478 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 03:05:01,481 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 [2022-07-21 03:05:01,486 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:01,489 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] [2022-07-21 03:05:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 03:05:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-21 03:05:01,520 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) [2022-07-21 03:05:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-21 03:05:01,522 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-07-21 03:05:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:01,523 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-21 03:05:01,523 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) [2022-07-21 03:05:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-21 03:05:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 03:05:01,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:01,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:01,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:01,752 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 [2022-07-21 03:05:01,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-07-21 03:05:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:01,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864743879] [2022-07-21 03:05:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:01,774 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:01,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015807968] [2022-07-21 03:05:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:01,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:01,785 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) [2022-07-21 03:05:01,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:05:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:01,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 03:05:01,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:01,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:01,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864743879] [2022-07-21 03:05:01,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:01,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015807968] [2022-07-21 03:05:01,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015807968] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:01,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:01,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-07-21 03:05:01,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103774245] [2022-07-21 03:05:01,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:01,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:05:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:05:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:05:01,950 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:05:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:01,971 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-07-21 03:05:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:05:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-21 03:05:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:01,972 INFO L225 Difference]: With dead ends: 36 [2022-07-21 03:05:01,972 INFO L226 Difference]: Without dead ends: 20 [2022-07-21 03:05:01,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:05:01,974 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:05:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-21 03:05:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-21 03:05:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:05:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-07-21 03:05:01,979 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2022-07-21 03:05:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:01,980 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-07-21 03:05:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:05:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-07-21 03:05:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:05:01,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:01,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:02,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:02,207 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 [2022-07-21 03:05:02,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 606185, now seen corresponding path program 1 times [2022-07-21 03:05:02,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:02,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065802012] [2022-07-21 03:05:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:02,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906971627] [2022-07-21 03:05:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:02,230 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) [2022-07-21 03:05:02,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:05:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:02,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 03:05:02,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:02,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065802012] [2022-07-21 03:05:02,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906971627] [2022-07-21 03:05:02,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906971627] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:02,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:02,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-21 03:05:02,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397771870] [2022-07-21 03:05:02,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:02,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 03:05:02,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 03:05:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:05:02,495 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 12 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:02,616 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2022-07-21 03:05:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 03:05:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 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 19 [2022-07-21 03:05:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:02,617 INFO L225 Difference]: With dead ends: 29 [2022-07-21 03:05:02,617 INFO L226 Difference]: Without dead ends: 20 [2022-07-21 03:05:02,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 03:05:02,619 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:02,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 59 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:05:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-21 03:05:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-21 03:05:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:05:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2022-07-21 03:05:02,623 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 19 [2022-07-21 03:05:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:02,624 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2022-07-21 03:05:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2022-07-21 03:05:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:05:02,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:02,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:02,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:02,847 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 [2022-07-21 03:05:02,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-07-21 03:05:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:02,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645601595] [2022-07-21 03:05:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:02,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:02,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880284828] [2022-07-21 03:05:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:02,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:02,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:02,860 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) [2022-07-21 03:05:02,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 03:05:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:05:02,899 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 03:05:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:05:02,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 03:05:02,947 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 03:05:02,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:05:02,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:03,150 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 [2022-07-21 03:05:03,153 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-21 03:05:03,155 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:05:03,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:05:03 BoogieIcfgContainer [2022-07-21 03:05:03,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:05:03,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:05:03,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:05:03,181 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:05:03,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:05:00" (3/4) ... [2022-07-21 03:05:03,183 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 03:05:03,225 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:05:03,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:05:03,226 INFO L158 Benchmark]: Toolchain (without parser) took 2947.49ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 31.7MB in the beginning and 35.5MB in the end (delta: -3.7MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-07-21 03:05:03,226 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:05:03,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.82ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 50.6MB in the end (delta: -19.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-07-21 03:05:03,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.47ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:05:03,227 INFO L158 Benchmark]: Boogie Preprocessor took 13.59ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 48.2MB in the end (delta: 941.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:05:03,228 INFO L158 Benchmark]: RCFGBuilder took 284.49ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 38.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 03:05:03,228 INFO L158 Benchmark]: TraceAbstraction took 2369.10ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 38.0MB in the beginning and 38.1MB in the end (delta: -136.9kB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-07-21 03:05:03,232 INFO L158 Benchmark]: Witness Printer took 44.91ms. Allocated memory is still 81.8MB. Free memory was 37.6MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:05:03,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.82ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 50.6MB in the end (delta: -19.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.47ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.59ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 48.2MB in the end (delta: 941.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.49ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 38.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2369.10ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 38.0MB in the beginning and 38.1MB in the end (delta: -136.9kB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 44.91ms. Allocated memory is still 81.8MB. Free memory was 37.6MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=0, x=0, X=2, y=0, Y=1] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=0, x=0, X=2, y=0, Y=1] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=0, x=0, x=0, X=2, x=0, y=0, Y=1] [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=0, X=2, x=0, x=0, x=0, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=0, X=2, x=0, x=0, x=0, Y=1, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=1, v=-2, X=2, x=0, x=0, x=0, y=1, Y=1] [L45] x++ VAL [counter=1, v=-2, x=1, x=0, X=2, x=0, y=1, Y=1] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-2, x=0, X=2, x=0, x=1, Y=1, y=1] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=2, v=-2, x=1, x=1, x=1, X=2, Y=1, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=2] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 154 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 41 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 566 SizeOfPredicates, 6 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12/18 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! [2022-07-21 03:05:03,280 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