./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_unwindbound20.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 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:30:35,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:30:35,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:30:35,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:30:35,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:30:35,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:30:35,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:30:35,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:30:35,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:30:35,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:30:35,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:30:35,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:30:35,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:30:35,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:30:35,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:30:35,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:30:35,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:30:35,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:30:35,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:30:35,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:30:35,325 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:30:35,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:30:35,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:30:35,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:30:35,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:30:35,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:30:35,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:30:35,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:30:35,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:30:35,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:30:35,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:30:35,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:30:35,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:30:35,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:30:35,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:30:35,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:30:35,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:30:35,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:30:35,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:30:35,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:30:35,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:30:35,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:30:35,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:30:35,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:30:35,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:30:35,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:30:35,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:30:35,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:30:35,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:30:35,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:30:35,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:30:35,360 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:30:35,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:30:35,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:30:35,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:30:35,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:30:35,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:30:35,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:30:35,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:30:35,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:30:35,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:30:35,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:30:35,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:30:35,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:30:35,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a [2022-07-19 15:30:35,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:30:35,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:30:35,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:30:35,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:30:35,566 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:30:35,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-07-19 15:30:35,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d99a4f7/37bbbdb1a8564e3494ffbbf254d00382/FLAG59ca4c377 [2022-07-19 15:30:35,914 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:30:35,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-07-19 15:30:35,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d99a4f7/37bbbdb1a8564e3494ffbbf254d00382/FLAG59ca4c377 [2022-07-19 15:30:36,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d99a4f7/37bbbdb1a8564e3494ffbbf254d00382 [2022-07-19 15:30:36,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:30:36,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:30:36,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:30:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:30:36,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:30:36,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175f267d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36, skipping insertion in model container [2022-07-19 15:30:36,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:30:36,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:30:36,480 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_unwindbound20.c[597,610] [2022-07-19 15:30:36,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:30:36,504 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:30:36,513 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_unwindbound20.c[597,610] [2022-07-19 15:30:36,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:30:36,526 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:30:36,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36 WrapperNode [2022-07-19 15:30:36,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:30:36,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:30:36,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:30:36,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:30:36,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,548 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-19 15:30:36,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:30:36,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:30:36,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:30:36,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:30:36,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:30:36,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:30:36,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:30:36,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:30:36,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (1/1) ... [2022-07-19 15:30:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:30:36,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:36,597 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) [2022-07-19 15:30:36,606 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 [2022-07-19 15:30:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:30:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:30:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:30:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:30:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:30:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:30:36,672 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:30:36,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:30:36,754 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:30:36,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:30:36,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:30:36,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:36 BoogieIcfgContainer [2022-07-19 15:30:36,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:30:36,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:30:36,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:30:36,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:30:36,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:30:36" (1/3) ... [2022-07-19 15:30:36,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486fbafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:30:36, skipping insertion in model container [2022-07-19 15:30:36,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:36" (2/3) ... [2022-07-19 15:30:36,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486fbafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:30:36, skipping insertion in model container [2022-07-19 15:30:36,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:36" (3/3) ... [2022-07-19 15:30:36,765 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c [2022-07-19 15:30:36,774 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:30:36,774 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:30:36,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:30:36,808 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@4d527089, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c6e3091 [2022-07-19 15:30:36,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:30:36,811 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) [2022-07-19 15:30:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:30:36,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:36,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:36,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-07-19 15:30:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:36,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136909363] [2022-07-19 15:30:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:36,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:36,884 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:36,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434106967] [2022-07-19 15:30:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:36,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:36,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:36,904 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) [2022-07-19 15:30:36,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:30:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:36,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:30:36,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:37,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:30:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136909363] [2022-07-19 15:30:37,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:37,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434106967] [2022-07-19 15:30:37,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434106967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:30:37,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:30:37,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 15:30:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071374489] [2022-07-19 15:30:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:30:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:30:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:30:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:30:37,178 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) [2022-07-19 15:30:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:37,262 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-07-19 15:30:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:30:37,264 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 [2022-07-19 15:30:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:37,269 INFO L225 Difference]: With dead ends: 54 [2022-07-19 15:30:37,269 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 15:30:37,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:30:37,274 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:37,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:30:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 15:30:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-19 15:30:37,299 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) [2022-07-19 15:30:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-19 15:30:37,300 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-07-19 15:30:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:37,301 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-19 15:30:37,301 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) [2022-07-19 15:30:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-19 15:30:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 15:30:37,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:37,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:37,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:37,515 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 [2022-07-19 15:30:37,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-07-19 15:30:37,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:37,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104466970] [2022-07-19 15:30:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:37,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:37,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798558372] [2022-07-19 15:30:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:37,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:37,537 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) [2022-07-19 15:30:37,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:30:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:37,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 15:30:37,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:37,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 15:30:37,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:37,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104466970] [2022-07-19 15:30:37,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:37,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798558372] [2022-07-19 15:30:37,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798558372] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:37,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:37,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-07-19 15:30:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487658526] [2022-07-19 15:30:37,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 15:30:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 15:30:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:30:37,833 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2022-07-19 15:30:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:38,025 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-19 15:30:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 15:30:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 18 [2022-07-19 15:30:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:38,026 INFO L225 Difference]: With dead ends: 41 [2022-07-19 15:30:38,027 INFO L226 Difference]: Without dead ends: 34 [2022-07-19 15:30:38,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-19 15:30:38,029 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:38,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:30:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-19 15:30:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-07-19 15:30:38,034 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) [2022-07-19 15:30:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-19 15:30:38,035 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-07-19 15:30:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:38,035 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-19 15:30:38,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2022-07-19 15:30:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-19 15:30:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:30:38,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:38,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:38,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:38,254 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 [2022-07-19 15:30:38,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-07-19 15:30:38,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:38,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234274049] [2022-07-19 15:30:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:38,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217678523] [2022-07-19 15:30:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:38,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:38,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:38,265 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) [2022-07-19 15:30:38,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 15:30:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 15:30:38,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:38,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:38,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234274049] [2022-07-19 15:30:38,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217678523] [2022-07-19 15:30:38,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217678523] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:38,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:38,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-07-19 15:30:38,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132166942] [2022-07-19 15:30:38,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:38,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:30:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:30:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:30:38,346 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) [2022-07-19 15:30:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:38,406 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-07-19 15:30:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 15:30:38,406 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 [2022-07-19 15:30:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:38,407 INFO L225 Difference]: With dead ends: 73 [2022-07-19 15:30:38,407 INFO L226 Difference]: Without dead ends: 67 [2022-07-19 15:30:38,407 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 [2022-07-19 15:30:38,408 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:38,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:30:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-19 15:30:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-07-19 15:30:38,415 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) [2022-07-19 15:30:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-07-19 15:30:38,416 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-07-19 15:30:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:38,416 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-07-19 15:30:38,417 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) [2022-07-19 15:30:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-07-19 15:30:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 15:30:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:38,417 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:38,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 15:30:38,633 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 [2022-07-19 15:30:38,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-07-19 15:30:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353599440] [2022-07-19 15:30:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:38,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:38,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780135095] [2022-07-19 15:30:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:38,644 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) [2022-07-19 15:30:38,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 15:30:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:38,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 15:30:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:30:38,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:30:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:39,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353599440] [2022-07-19 15:30:39,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:39,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780135095] [2022-07-19 15:30:39,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780135095] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:39,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:39,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-19 15:30:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868963394] [2022-07-19 15:30:39,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:39,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 15:30:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 15:30:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-19 15:30:39,191 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:30:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:39,662 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-07-19 15:30:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 15:30:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 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 [2022-07-19 15:30:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:39,664 INFO L225 Difference]: With dead ends: 81 [2022-07-19 15:30:39,664 INFO L226 Difference]: Without dead ends: 73 [2022-07-19 15:30:39,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 15:30:39,665 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:39,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 106 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 271 Invalid, 0 Unknown, 90 Unchecked, 0.1s Time] [2022-07-19 15:30:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-19 15:30:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2022-07-19 15:30:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:30:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-07-19 15:30:39,681 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2022-07-19 15:30:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:39,685 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-07-19 15:30:39,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:30:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-07-19 15:30:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:30:39,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:39,687 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:39,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:39,903 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 [2022-07-19 15:30:39,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2021783820, now seen corresponding path program 1 times [2022-07-19 15:30:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:39,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985988636] [2022-07-19 15:30:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:39,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:39,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212551946] [2022-07-19 15:30:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:39,917 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) [2022-07-19 15:30:39,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 15:30:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:39,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 15:30:39,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:30:53,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:30:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:54,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985988636] [2022-07-19 15:30:54,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:54,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212551946] [2022-07-19 15:30:54,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212551946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:54,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:54,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-19 15:30:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296871907] [2022-07-19 15:30:54,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:30:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:30:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-07-19 15:30:54,026 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:30:56,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:00,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:02,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:04,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:06,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:08,361 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2022-07-19 15:31:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:31:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-19 15:31:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:08,363 INFO L225 Difference]: With dead ends: 92 [2022-07-19 15:31:08,363 INFO L226 Difference]: Without dead ends: 86 [2022-07-19 15:31:08,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-07-19 15:31:08,364 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:08,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2022-07-19 15:31:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-19 15:31:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2022-07-19 15:31:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 states have internal predecessors, (81), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 15:31:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2022-07-19 15:31:08,380 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 35 [2022-07-19 15:31:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:08,381 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2022-07-19 15:31:08,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:31:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2022-07-19 15:31:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:31:08,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:08,382 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:08,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 15:31:08,618 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 [2022-07-19 15:31:08,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2132634866, now seen corresponding path program 1 times [2022-07-19 15:31:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:08,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382664241] [2022-07-19 15:31:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:08,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:08,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222426443] [2022-07-19 15:31:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:08,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:08,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:08,648 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) [2022-07-19 15:31:08,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 15:31:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:08,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:31:08,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 15:31:08,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 15:31:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382664241] [2022-07-19 15:31:08,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:08,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222426443] [2022-07-19 15:31:08,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222426443] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:08,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:08,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 15:31:08,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515699138] [2022-07-19 15:31:08,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:08,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 15:31:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 15:31:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:31:08,914 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:31:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:09,076 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2022-07-19 15:31:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:31:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-07-19 15:31:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:09,079 INFO L225 Difference]: With dead ends: 93 [2022-07-19 15:31:09,079 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 15:31:09,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-19 15:31:09,082 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:09,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:31:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 15:31:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2022-07-19 15:31:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:31:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2022-07-19 15:31:09,102 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 35 [2022-07-19 15:31:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:09,103 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2022-07-19 15:31:09,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:31:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2022-07-19 15:31:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 15:31:09,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:09,108 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:09,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:09,325 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 [2022-07-19 15:31:09,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1410392757, now seen corresponding path program 2 times [2022-07-19 15:31:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755730021] [2022-07-19 15:31:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:09,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:09,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363996512] [2022-07-19 15:31:09,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:31:09,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:09,368 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) [2022-07-19 15:31:09,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 15:31:09,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:31:09,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:31:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:31:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:31:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:31:09,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:09,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755730021] [2022-07-19 15:31:09,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:09,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363996512] [2022-07-19 15:31:09,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363996512] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:09,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:09,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-19 15:31:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027763167] [2022-07-19 15:31:09,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:31:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:31:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:31:09,693 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:31:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:09,843 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2022-07-19 15:31:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:31:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 45 [2022-07-19 15:31:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:09,845 INFO L225 Difference]: With dead ends: 104 [2022-07-19 15:31:09,845 INFO L226 Difference]: Without dead ends: 98 [2022-07-19 15:31:09,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:31:09,845 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:09,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:31:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-19 15:31:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-07-19 15:31:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 15:31:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2022-07-19 15:31:09,859 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 45 [2022-07-19 15:31:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:09,859 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2022-07-19 15:31:09,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:31:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2022-07-19 15:31:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 15:31:09,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:09,862 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:09,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:10,079 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 [2022-07-19 15:31:10,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1900020427, now seen corresponding path program 3 times [2022-07-19 15:31:10,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:10,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647199025] [2022-07-19 15:31:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:10,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235835081] [2022-07-19 15:31:10,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:31:10,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:10,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:10,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:31:10,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 15:31:11,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:31:11,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:31:11,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 15:31:11,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:36,274 WARN L233 SmtUtils]: Spent 19.34s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 15:31:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 15:31:37,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 15:31:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:38,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647199025] [2022-07-19 15:31:38,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235835081] [2022-07-19 15:31:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235835081] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:38,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:38,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-07-19 15:31:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328092792] [2022-07-19 15:31:38,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 15:31:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 15:31:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2022-07-19 15:31:38,645 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:31:40,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:42,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:44,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:46,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:48,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:52,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:56,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:58,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:00,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:05,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:07,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:09,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:09,959 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2022-07-19 15:32:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 15:32:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-07-19 15:32:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:09,960 INFO L225 Difference]: With dead ends: 93 [2022-07-19 15:32:09,960 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 15:32:09,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=118, Invalid=531, Unknown=1, NotChecked=0, Total=650 [2022-07-19 15:32:09,961 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:09,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 83 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 10 Unknown, 0 Unchecked, 23.8s Time] [2022-07-19 15:32:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 15:32:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 50. [2022-07-19 15:32:09,967 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) [2022-07-19 15:32:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-07-19 15:32:09,967 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 45 [2022-07-19 15:32:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:09,967 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-07-19 15:32:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:32:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-07-19 15:32:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 15:32:09,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:09,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:09,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 15:32:10,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 15:32:10,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-07-19 15:32:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:10,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084946390] [2022-07-19 15:32:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:10,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947021715] [2022-07-19 15:32:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:10,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:10,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:10,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:10,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 15:32:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 15:32:10,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:32:10,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:32:10,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084946390] [2022-07-19 15:32:10,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947021715] [2022-07-19 15:32:10,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947021715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:10,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-07-19 15:32:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145018200] [2022-07-19 15:32:10,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:10,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:32:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:32:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:32:10,394 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:32:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:10,519 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-07-19 15:32:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 15:32:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-07-19 15:32:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:10,525 INFO L225 Difference]: With dead ends: 116 [2022-07-19 15:32:10,525 INFO L226 Difference]: Without dead ends: 110 [2022-07-19 15:32:10,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-07-19 15:32:10,526 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:10,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 154 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-19 15:32:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-07-19 15:32:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 15:32:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-07-19 15:32:10,539 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2022-07-19 15:32:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:10,540 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-07-19 15:32:10,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:32:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-07-19 15:32:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 15:32:10,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:10,541 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:10,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-19 15:32:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:10,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:10,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2022-07-19 15:32:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:10,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304104756] [2022-07-19 15:32:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:10,750 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:10,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715103437] [2022-07-19 15:32:10,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:32:10,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:10,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:10,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:10,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 15:32:10,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:32:10,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:10,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 15:32:10,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:32:10,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 15:32:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304104756] [2022-07-19 15:32:11,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715103437] [2022-07-19 15:32:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715103437] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:11,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:11,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-07-19 15:32:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623271457] [2022-07-19 15:32:11,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 15:32:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 15:32:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-07-19 15:32:11,168 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-19 15:32:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:11,453 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2022-07-19 15:32:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 15:32:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 109 [2022-07-19 15:32:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:11,454 INFO L225 Difference]: With dead ends: 216 [2022-07-19 15:32:11,454 INFO L226 Difference]: Without dead ends: 210 [2022-07-19 15:32:11,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 15:32:11,455 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 197 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:11,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 278 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-19 15:32:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-07-19 15:32:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 168 states have (on average 1.125) internal successors, (189), 168 states have internal predecessors, (189), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:32:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 230 transitions. [2022-07-19 15:32:11,476 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 230 transitions. Word has length 109 [2022-07-19 15:32:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:11,477 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 230 transitions. [2022-07-19 15:32:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-19 15:32:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 230 transitions. [2022-07-19 15:32:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-19 15:32:11,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:11,478 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:11,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 15:32:11,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -661676624, now seen corresponding path program 3 times [2022-07-19 15:32:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:11,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718385502] [2022-07-19 15:32:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:11,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165916706] [2022-07-19 15:32:11,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:32:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:11,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:11,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 15:32:11,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:32:11,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:11,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 15:32:11,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 212 proven. 1 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-07-19 15:32:15,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:16,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:16,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718385502] [2022-07-19 15:32:16,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:16,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165916706] [2022-07-19 15:32:16,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165916706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:32:16,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:32:16,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-19 15:32:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107663179] [2022-07-19 15:32:16,075 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:16,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 15:32:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 15:32:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=254, Unknown=1, NotChecked=0, Total=306 [2022-07-19 15:32:16,076 INFO L87 Difference]: Start difference. First operand 210 states and 230 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-07-19 15:32:18,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:22,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:24,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:26,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:28,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:30,280 INFO L93 Difference]: Finished difference Result 409 states and 448 transitions. [2022-07-19 15:32:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 15:32:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) Word has length 209 [2022-07-19 15:32:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:30,285 INFO L225 Difference]: With dead ends: 409 [2022-07-19 15:32:30,285 INFO L226 Difference]: Without dead ends: 403 [2022-07-19 15:32:30,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=94, Invalid=409, Unknown=3, NotChecked=0, Total=506 [2022-07-19 15:32:30,286 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:30,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 38 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2022-07-19 15:32:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-07-19 15:32:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2022-07-19 15:32:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 320 states have (on average 1.125) internal successors, (360), 320 states have internal predecessors, (360), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-19 15:32:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 439 transitions. [2022-07-19 15:32:30,332 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 439 transitions. Word has length 209 [2022-07-19 15:32:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:30,333 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 439 transitions. [2022-07-19 15:32:30,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-07-19 15:32:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 439 transitions. [2022-07-19 15:32:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-19 15:32:30,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:30,343 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:30,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:30,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 15:32:30,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 18381746, now seen corresponding path program 1 times [2022-07-19 15:32:30,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:30,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751355916] [2022-07-19 15:32:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:30,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:30,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525652678] [2022-07-19 15:32:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:30,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:30,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:30,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 15:32:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:32:30,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:32:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:32:30,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 15:32:30,927 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:32:30,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:32:30,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:31,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 15:32:31,137 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:31,140 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:32:31,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:32:31 BoogieIcfgContainer [2022-07-19 15:32:31,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:32:31,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:32:31,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:32:31,225 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:32:31,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:36" (3/4) ... [2022-07-19 15:32:31,227 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 15:32:31,313 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:32:31,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:32:31,316 INFO L158 Benchmark]: Toolchain (without parser) took 114965.45ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 97.4MB in the beginning and 125.6MB in the end (delta: -28.3MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,317 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:32:31,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.16ms. Allocated memory is still 134.2MB. Free memory was 97.2MB in the beginning and 108.2MB in the end (delta: -11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.28ms. Allocated memory is still 134.2MB. Free memory was 108.2MB in the beginning and 106.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,317 INFO L158 Benchmark]: Boogie Preprocessor took 12.99ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 105.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,318 INFO L158 Benchmark]: RCFGBuilder took 197.03ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 95.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,318 INFO L158 Benchmark]: TraceAbstraction took 114461.89ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 94.5MB in the beginning and 44.4MB in the end (delta: 50.1MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,318 INFO L158 Benchmark]: Witness Printer took 90.94ms. Allocated memory is still 161.5MB. Free memory was 44.4MB in the beginning and 125.6MB in the end (delta: -81.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 15:32:31,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.16ms. Allocated memory is still 134.2MB. Free memory was 97.2MB in the beginning and 108.2MB in the end (delta: -11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.28ms. Allocated memory is still 134.2MB. Free memory was 108.2MB in the beginning and 106.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.99ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 105.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 197.03ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 95.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 114461.89ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 94.5MB in the beginning and 44.4MB in the end (delta: 50.1MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. * Witness Printer took 90.94ms. Allocated memory is still 161.5MB. Free memory was 44.4MB in the beginning and 125.6MB in the end (delta: -81.2MB). Peak memory consumption was 6.3MB. 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=-73, X=77, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-73, x=0, X=77, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-73, x=0, x=0, X=77, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-73, X=77, x=0, x=0, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-73, X=77, 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=-69, x=0, X=77, x=0, x=0, y=0, Y=2] [L45] x++ VAL [counter=1, v=-69, x=1, x=0, x=0, X=77, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-69, x=1, X=77, x=0, x=0, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-69, x=2, x=0, x=1, X=77, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-69, x=2, x=1, X=77, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-69, x=1, X=77, x=2, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-65, x=2, X=77, x=0, x=1, y=0, Y=2] [L45] x++ VAL [counter=2, v=-65, X=77, x=2, x=0, x=2, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-65, x=0, x=2, x=2, X=77, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-65, X=77, x=4, x=0, x=2, 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=-65, x=4, X=77, x=0, x=2, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-65, x=2, x=4, X=77, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-61, X=77, x=2, x=0, x=4, Y=2, y=0] [L45] x++ VAL [counter=3, v=-61, X=77, x=0, x=4, x=3, y=0, Y=2] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-61, X=77, x=0, x=4, x=3, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-61, X=77, x=0, x=3, x=6, 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=-61, x=6, X=77, x=0, x=3, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-61, x=0, X=77, x=6, x=3, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-57, x=3, X=77, x=6, x=0, Y=2, y=0] [L45] x++ VAL [counter=4, v=-57, x=4, X=77, x=0, x=6, y=0, Y=2] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-57, x=0, x=6, X=77, x=4, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-57, x=0, x=4, x=8, X=77, 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=-57, x=8, x=0, X=77, x=4, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-57, x=8, x=0, x=4, X=77, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-53, X=77, x=0, x=8, x=4, y=0, Y=2] [L45] x++ VAL [counter=5, v=-53, x=0, x=8, X=77, x=5, y=0, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-53, x=8, x=5, x=0, X=77, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-53, X=77, x=0, x=5, x=10, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-53, x=0, x=5, X=77, x=10, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-53, x=10, x=0, X=77, x=5, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-49, X=77, x=10, x=0, x=5, y=0, Y=2] [L45] x++ VAL [counter=6, v=-49, X=77, x=6, x=10, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-49, x=0, x=6, X=77, x=10, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-49, x=12, x=6, X=77, 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=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-49, x=0, x=12, x=6, X=77, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-49, x=12, x=6, x=0, X=77, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-45, x=6, x=0, x=12, X=77, Y=2, y=0] [L45] x++ VAL [counter=7, v=-45, x=12, x=7, X=77, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-45, x=7, X=77, x=12, x=0, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-45, x=0, x=14, X=77, x=7, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-45, X=77, x=7, x=0, x=14, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-45, x=0, X=77, x=7, x=14, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-41, x=14, x=0, x=7, X=77, y=0, Y=2] [L45] x++ VAL [counter=8, v=-41, X=77, x=0, x=8, x=14, y=0, Y=2] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-41, X=77, x=0, x=14, x=8, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-41, x=16, x=8, X=77, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-41, x=0, x=16, X=77, x=8, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-41, x=16, X=77, x=8, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=-37, X=77, x=8, x=16, x=0, y=0, Y=2] [L45] x++ VAL [counter=9, v=-37, x=0, x=9, X=77, x=16, Y=2, y=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=-37, x=9, X=77, x=16, x=0, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=-37, x=0, X=77, x=18, x=9, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=-37, x=9, X=77, x=18, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=-37, x=0, X=77, x=9, x=18, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=10, v=-33, x=0, x=18, X=77, x=9, Y=2, y=0] [L45] x++ VAL [counter=10, v=-33, X=77, x=18, x=0, x=10, y=0, Y=2] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-33, x=10, X=77, x=18, x=0, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=11, v=-33, x=0, X=77, x=20, x=10, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=11] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=11, v=-33, X=77, x=10, x=0, x=20, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=11, v=-33, x=0, X=77, x=10, x=20, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=11, v=-29, x=20, x=0, x=10, X=77, y=0, Y=2] [L45] x++ VAL [counter=11, v=-29, x=11, X=77, x=20, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=12, counter++=11, v=-29, x=11, x=0, X=77, x=20, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=12, v=-29, x=0, x=22, X=77, x=11, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=12] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=12, v=-29, X=77, x=22, x=11, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=12, v=-29, x=22, x=0, X=77, x=11, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=12, v=-25, x=0, X=77, x=22, x=11, Y=2, y=0] [L45] x++ VAL [counter=12, v=-25, X=77, x=12, x=22, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=13, counter++=12, v=-25, x=0, x=22, X=77, x=12, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=13, v=-25, x=12, x=24, X=77, 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=13] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=13, v=-25, x=0, x=24, X=77, x=12, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=13, v=-25, x=0, x=24, X=77, x=12, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=13, v=-21, X=77, x=24, x=0, x=12, y=0, Y=2] [L45] x++ VAL [counter=13, v=-21, x=24, x=0, X=77, x=13, y=0, Y=2] [L31] EXPR counter++ VAL [counter=14, counter++=13, v=-21, X=77, x=0, x=13, x=24, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=14, v=-21, x=0, x=26, x=13, X=77, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=14] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=14, v=-21, x=26, x=0, x=13, X=77, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=14, v=-21, x=26, X=77, x=13, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=14, v=-17, x=26, x=0, x=13, X=77, y=0, Y=2] [L45] x++ VAL [counter=14, v=-17, X=77, x=14, x=26, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=15, counter++=14, v=-17, x=26, x=14, X=77, x=0, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=15, v=-17, x=14, x=0, x=28, X=77, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=15] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=15, v=-17, X=77, x=0, x=14, x=28, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=15, v=-17, x=14, x=28, X=77, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=15, v=-13, x=14, X=77, x=0, x=28, y=0, Y=2] [L45] x++ VAL [counter=15, v=-13, x=15, x=28, x=0, X=77, y=0, Y=2] [L31] EXPR counter++ VAL [counter=16, counter++=15, v=-13, x=0, x=15, x=28, X=77, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=16, v=-13, x=30, x=15, x=0, X=77, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=16] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=16, v=-13, x=30, X=77, x=0, x=15, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=16, v=-13, x=15, X=77, x=0, x=30, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=16, v=-9, x=0, x=15, x=30, X=77, Y=2, y=0] [L45] x++ VAL [counter=16, v=-9, X=77, x=16, x=0, x=30, y=0, Y=2] [L31] EXPR counter++ VAL [counter=17, counter++=16, v=-9, x=30, x=0, x=16, X=77, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=17, v=-9, X=77, x=0, x=32, x=16, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=17] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=17, v=-9, x=32, x=0, X=77, x=16, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=17, v=-9, x=16, X=77, x=0, x=32, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=17, v=-5, x=0, x=32, x=16, X=77, y=0, Y=2] [L45] x++ VAL [counter=17, v=-5, x=0, x=32, X=77, x=17, Y=2, y=0] [L31] EXPR counter++ VAL [counter=18, counter++=17, v=-5, x=17, x=0, x=32, X=77, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=18, v=-5, x=0, X=77, x=34, x=17, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=18] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=18, v=-5, x=34, x=17, x=0, X=77, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=18, v=-5, x=34, X=77, x=0, x=17, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=18, v=-1, x=17, x=0, x=34, X=77, Y=2, y=0] [L45] x++ VAL [counter=18, v=-1, x=34, X=77, x=0, x=18, Y=2, y=0] [L31] EXPR counter++ VAL [counter=19, counter++=18, v=-1, x=0, X=77, x=18, x=34, Y=2, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=19, v=-1, X=77, x=18, x=36, 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=19] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=19, v=-1, X=77, x=36, x=18, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=19, v=-1, x=36, x=0, X=77, x=18, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=19, v=3, x=36, x=0, X=77, x=18, Y=2, y=0] [L45] x++ VAL [counter=19, v=3, x=36, x=19, x=0, X=77, Y=2, y=0] [L31] EXPR counter++ VAL [counter=20, counter++=19, v=3, x=36, x=19, x=0, X=77, y=0, Y=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=20, v=3, x=38, x=0, X=77, x=19, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=20] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=20, v=3, x=38, x=0, x=19, X=77, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=20, v=3, x=0, x=19, x=38, X=77, Y=2, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=20, v=-147, x=38, X=77, x=0, x=19, Y=2, y=1] [L45] x++ VAL [counter=20, v=-147, x=0, x=38, X=77, x=20, Y=2, y=1] [L31] EXPR counter++ VAL [counter=21, counter++=20, v=-147, x=38, x=0, X=77, x=20, Y=2, y=1] [L31] COND FALSE !(counter++<20) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=21, v=-147, X=77, x=40, x=20, x=20, 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=21] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 114.3s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 61.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 44.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 508 mSDsluCounter, 1102 SdHoareTripleChecker+Invalid, 44.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 912 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1336 IncrementalHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 190 mSDtfsCounter, 1336 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1057 GetRequests, 832 SyntacticMatches, 10 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 42.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=11, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 88 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 47.8s InterpolantComputationTime, 806 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 957 ConstructedInterpolants, 4 QuantifiedInterpolants, 4368 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1307 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 2547/3530 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! [2022-07-19 15:32:31,366 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