./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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_valuebound10.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 0bc6a4fccf15f71e757bedea1c51d4def5df9848 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:01:40,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:01:40,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:01:40,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:01:40,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:01:40,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:01:40,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:01:40,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:01:40,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:01:40,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:01:40,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:01:40,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:01:40,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:01:40,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:01:40,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:01:40,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:01:40,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:01:40,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:01:40,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:01:40,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:01:40,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:01:40,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:01:40,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:01:40,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:01:40,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:01:40,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:01:40,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:01:40,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:01:40,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:01:40,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:01:40,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:01:40,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:01:40,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:01:40,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:01:40,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:01:40,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:01:40,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:01:40,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:01:40,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:01:40,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:01:40,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:01:40,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:01:40,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:01:40,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:01:40,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:01:40,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:01:40,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:01:40,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:01:40,319 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:01:40,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:01:40,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:01:40,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:01:40,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:01:40,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:01:40,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:01:40,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:01:40,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:01:40,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc6a4fccf15f71e757bedea1c51d4def5df9848 [2021-08-29 12:01:40,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:01:40,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:01:40,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:01:40,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:01:40,606 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:01:40,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2021-08-29 12:01:40,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e8b131d/d3f5759184a346469cd6c9918ff52501/FLAGe812cb06f [2021-08-29 12:01:41,058 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:01:41,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2021-08-29 12:01:41,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e8b131d/d3f5759184a346469cd6c9918ff52501/FLAGe812cb06f [2021-08-29 12:01:41,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e8b131d/d3f5759184a346469cd6c9918ff52501 [2021-08-29 12:01:41,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:01:41,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:01:41,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:01:41,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:01:41,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:01:41,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326f4a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41, skipping insertion in model container [2021-08-29 12:01:41,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:01:41,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:01:41,234 WARN L228 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_valuebound10.c[597,610] [2021-08-29 12:01:41,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:01:41,259 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:01:41,300 WARN L228 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_valuebound10.c[597,610] [2021-08-29 12:01:41,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:01:41,331 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:01:41,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41 WrapperNode [2021-08-29 12:01:41,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:01:41,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:01:41,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:01:41,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:01:41,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:01:41,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:01:41,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:01:41,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:01:41,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:01:41,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:01:41,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:01:41,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:01:41,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (1/1) ... [2021-08-29 12:01:41,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:01:41,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:41,428 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) [2021-08-29 12:01:41,452 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 [2021-08-29 12:01:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:01:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:01:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:01:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:01:41,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:01:41,628 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 12:01:41,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:41 BoogieIcfgContainer [2021-08-29 12:01:41,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:01:41,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:01:41,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:01:41,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:01:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:01:41" (1/3) ... [2021-08-29 12:01:41,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b32a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:01:41, skipping insertion in model container [2021-08-29 12:01:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:41" (2/3) ... [2021-08-29 12:01:41,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b32a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:01:41, skipping insertion in model container [2021-08-29 12:01:41,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:41" (3/3) ... [2021-08-29 12:01:41,636 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound10.c [2021-08-29 12:01:41,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:01:41,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 12:01:41,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:01:41,685 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 12:01:41,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 12:01:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:01:41,702 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:41,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:41,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:41,708 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-29 12:01:41,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:41,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177779293] [2021-08-29 12:01:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:41,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:41,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:41,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177779293] [2021-08-29 12:01:41,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177779293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:01:41,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:01:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:01:41,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061781377] [2021-08-29 12:01:41,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:01:41,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:41,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:01:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:01:41,890 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:41,957 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-08-29 12:01:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:01:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 12:01:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:41,963 INFO L225 Difference]: With dead ends: 39 [2021-08-29 12:01:41,963 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 12:01:41,965 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:01:41,967 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.79ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:41,968 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.20ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 55.79ms Time] [2021-08-29 12:01:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 12:01:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 12:01:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-29 12:01:41,986 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-08-29 12:01:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:41,986 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-29 12:01:41,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-29 12:01:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:01:41,987 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:41,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:41,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:01:41,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-29 12:01:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:41,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048782925] [2021-08-29 12:01:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:41,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:42,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:42,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679525769] [2021-08-29 12:01:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:42,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:42,007 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) [2021-08-29 12:01:42,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:01:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:01:42,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:42,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:01:42,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:42,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048782925] [2021-08-29 12:01:42,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:42,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679525769] [2021-08-29 12:01:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679525769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:01:42,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:01:42,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:01:42,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874661371] [2021-08-29 12:01:42,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:01:42,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:01:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:01:42,198 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:42,285 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-08-29 12:01:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:01:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 12:01:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:42,286 INFO L225 Difference]: With dead ends: 29 [2021-08-29 12:01:42,286 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 12:01:42,287 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:01:42,288 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.64ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:42,289 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 72.64ms Time] [2021-08-29 12:01:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 12:01:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-08-29 12:01:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-29 12:01:42,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2021-08-29 12:01:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:42,296 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-29 12:01:42,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-29 12:01:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:01:42,297 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:42,298 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:42,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:01:42,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:42,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2039286562, now seen corresponding path program 1 times [2021-08-29 12:01:42,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:42,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843237389] [2021-08-29 12:01:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:42,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:42,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:42,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827051184] [2021-08-29 12:01:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:42,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:42,536 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) [2021-08-29 12:01:42,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:01:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:42,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 12:01:42,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:42,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:01:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 12:01:42,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:42,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843237389] [2021-08-29 12:01:42,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:42,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827051184] [2021-08-29 12:01:42,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827051184] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:01:42,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:01:42,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-08-29 12:01:42,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97124043] [2021-08-29 12:01:42,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:01:42,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:01:42,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:01:42,748 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:42,862 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-08-29 12:01:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:01:42,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 12:01:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:42,864 INFO L225 Difference]: With dead ends: 30 [2021-08-29 12:01:42,865 INFO L226 Difference]: Without dead ends: 24 [2021-08-29 12:01:42,865 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 80.41ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:01:42,866 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.88ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:42,866 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [17 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 61.88ms Time] [2021-08-29 12:01:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-29 12:01:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-29 12:01:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 12:01:42,869 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-08-29 12:01:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 12:01:42,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 12:01:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 12:01:42,871 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:42,871 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:42,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:01:43,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 12:01:43,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash -878006574, now seen corresponding path program 1 times [2021-08-29 12:01:43,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:43,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575557166] [2021-08-29 12:01:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:43,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:43,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:43,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168137624] [2021-08-29 12:01:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:43,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:43,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:43,102 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) [2021-08-29 12:01:43,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:01:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-29 12:01:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:43,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:01:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:43,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:43,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575557166] [2021-08-29 12:01:43,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:43,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168137624] [2021-08-29 12:01:43,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168137624] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 12:01:43,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 12:01:43,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2021-08-29 12:01:43,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839558126] [2021-08-29 12:01:43,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:01:43,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:01:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-29 12:01:43,611 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:43,856 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-29 12:01:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:01:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 12:01:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:43,856 INFO L225 Difference]: With dead ends: 23 [2021-08-29 12:01:43,856 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:01:43,857 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 319.07ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-08-29 12:01:43,857 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.70ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:43,858 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 109.70ms Time] [2021-08-29 12:01:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:01:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:01:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:01:43,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-29 12:01:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:01:43,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:01:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:01:43,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:01:43,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 12:01:43,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 12:01:43,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:01:44,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:44,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:01:44,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:44,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:44,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:44,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:44,735 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 12:01:44,736 INFO L861 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2021-08-29 12:01:44,736 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-08-29 12:01:44,736 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2021-08-29 12:01:44,737 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-29 12:01:44,739 INFO L858 garLoopResultBuilder]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-08-29 12:01:44,739 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2021-08-29 12:01:44,739 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2021-08-29 12:01:44,739 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:01:44,741 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse1 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0))) (.cse0 (* 2 ULTIMATE.start_main_~Y~0)) (.cse2 (* 2 ULTIMATE.start_main_~y~0)) (.cse3 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (or (and (= ULTIMATE.start_main_~x~0 0) (= .cse0 (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0)) (= (+ .cse1 .cse2 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse3))) (let ((.cse4 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0)))) (and (= (+ .cse1 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse4)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (+ .cse4 .cse2) .cse3) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~X~0)))))) [2021-08-29 12:01:44,741 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:01:44,741 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-08-29 12:01:44,742 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:01:44,742 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 12:01:44,746 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:01:44,747 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-08-29 12:01:44,747 INFO L854 garLoopResultBuilder]: At program point L14-2(lines 36 37) the Hoare annotation is: (let ((.cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0)))) (and (= (+ (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0)) (* 2 ULTIMATE.start_main_~Y~0)) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (+ .cse0 (* 2 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~X~0)))) [2021-08-29 12:01:44,747 INFO L858 garLoopResultBuilder]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2021-08-29 12:01:44,747 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-08-29 12:01:44,747 INFO L858 garLoopResultBuilder]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-08-29 12:01:44,748 INFO L861 garLoopResultBuilder]: At program point L14-5(lines 13 19) the Hoare annotation is: true [2021-08-29 12:01:44,751 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:01:44,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:01:44 BoogieIcfgContainer [2021-08-29 12:01:44,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:01:44,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:01:44,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:01:44,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:01:44,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:41" (3/4) ... [2021-08-29 12:01:44,771 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:01:44,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-29 12:01:44,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:01:44,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:01:44,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:01:44,814 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:01:44,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:01:44,815 INFO L158 Benchmark]: Toolchain (without parser) took 3733.72ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 45.7MB in the beginning and 64.5MB in the end (delta: -18.8MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,815 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:01:44,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.52ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 48.1MB in the end (delta: -2.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.51ms. Allocated memory is still 65.0MB. Free memory was 48.1MB in the beginning and 46.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,816 INFO L158 Benchmark]: Boogie Preprocessor took 31.39ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 45.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:01:44,817 INFO L158 Benchmark]: RCFGBuilder took 224.46ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 36.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,817 INFO L158 Benchmark]: TraceAbstraction took 3136.14ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 36.0MB in the beginning and 67.4MB in the end (delta: -31.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,818 INFO L158 Benchmark]: Witness Printer took 47.12ms. Allocated memory is still 88.1MB. Free memory was 67.4MB in the beginning and 64.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:01:44,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.52ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 48.1MB in the end (delta: -2.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.51ms. Allocated memory is still 65.0MB. Free memory was 48.1MB in the beginning and 46.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.39ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 45.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.46ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 36.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3136.14ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 36.0MB in the beginning and 67.4MB in the end (delta: -31.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Witness Printer took 47.12ms. Allocated memory is still 88.1MB. Free memory was 67.4MB in the beginning and 64.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3073.57ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.18ms, AutomataDifference: 558.16ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 661.97ms, InitialAbstractionConstructionTime: 8.05ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 300.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 235.46ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 0 mSDtfsCounter, 256 mSolverCounterSat, 3.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 417.83ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 17.68ms AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 117 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 40.49ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 198 FormulaSimplificationTreeSizeReductionInter, 615.99ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.59ms SsaConstructionTime, 73.14ms SatisfiabilityAnalysisTime, 827.81ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 SizeOfPredicates, 31 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/10 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((x == 0 && 2 * Y == X + v) && 2 * (x * Y) + 2 * y + 2 * Y == X + v + 2 * (x * y)) || ((2 * (x * Y) + 2 * Y == X + v + 2 * (y * X) && 1 <= cond) && (2 * (y * X) + 2 * y == 2 * (x * y) || x <= X)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (2 * (x * Y) + 2 * Y == X + v + 2 * (y * X) && 1 <= cond) && (2 * (y * X) + 2 * y == 2 * (x * y) || x <= X) RESULT: Ultimate proved your program to be correct! [2021-08-29 12:01:44,853 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...