./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.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_valuebound2.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 fbde2b4d8590a43f5f4c36a2fa025463c4b5fc0a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:01:54,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:01:54,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:01:54,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:01:54,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:01:54,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:01:54,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:01:54,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:01:54,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:01:54,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:01:54,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:01:54,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:01:54,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:01:54,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:01:54,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:01:54,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:01:54,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:01:54,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:01:54,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:01:54,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:01:54,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:01:54,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:01:54,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:01:54,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:01:54,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:01:54,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:01:54,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:01:54,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:01:54,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:01:54,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:01:54,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:01:54,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:01:54,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:01:54,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:01:54,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:01:54,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:01:54,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:01:54,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:01:54,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:01:54,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:01:54,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:01:54,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:01:54,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:01:54,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:01:54,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:01:54,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:01:54,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:01:54,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:01:54,882 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:01:54,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:01:54,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:01:54,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:01:54,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:01:54,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:01:54,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:01:54,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbde2b4d8590a43f5f4c36a2fa025463c4b5fc0a [2021-08-29 12:01:55,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:01:55,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:01:55,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:01:55,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:01:55,147 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:01:55,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2021-08-29 12:01:55,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcf84fd5/84927e2f6134469b8d4080373eb16270/FLAGb10aee2ca [2021-08-29 12:01:55,564 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:01:55,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2021-08-29 12:01:55,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcf84fd5/84927e2f6134469b8d4080373eb16270/FLAGb10aee2ca [2021-08-29 12:01:55,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcf84fd5/84927e2f6134469b8d4080373eb16270 [2021-08-29 12:01:55,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:01:55,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:01:55,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:01:55,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:01:55,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:01:55,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64359bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55, skipping insertion in model container [2021-08-29 12:01:55,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:01:55,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:01:55,696 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_valuebound2.c[597,610] [2021-08-29 12:01:55,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:01:55,711 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:01:55,722 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_valuebound2.c[597,610] [2021-08-29 12:01:55,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:01:55,738 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:01:55,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55 WrapperNode [2021-08-29 12:01:55,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:01:55,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:01:55,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:01:55,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:01:55,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:01:55,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:01:55,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:01:55,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:01:55,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:01:55,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:01:55,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:01:55,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:01:55,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (1/1) ... [2021-08-29 12:01:55,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:01:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:55,858 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 12:01:55,878 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 12:01:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:01:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:01:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:01:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:01:56,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:01:56,019 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 12:01:56,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:56 BoogieIcfgContainer [2021-08-29 12:01:56,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:01:56,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:01:56,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:01:56,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:01:56,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:01:55" (1/3) ... [2021-08-29 12:01:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba3820f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:01:56, skipping insertion in model container [2021-08-29 12:01:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:01:55" (2/3) ... [2021-08-29 12:01:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba3820f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:01:56, skipping insertion in model container [2021-08-29 12:01:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:56" (3/3) ... [2021-08-29 12:01:56,025 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2021-08-29 12:01:56,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:01:56,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 12:01:56,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:01:56,074 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 12:01:56,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 12:01:56,087 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 12:01:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:01:56,099 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:56,100 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:56,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-29 12:01:56,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:56,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351004165] [2021-08-29 12:01:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:56,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:56,264 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 12:01:56,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:56,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351004165] [2021-08-29 12:01:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351004165] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:01:56,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:01:56,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:01:56,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624487191] [2021-08-29 12:01:56,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:01:56,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:01:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:01:56,293 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 12:01:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:56,348 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-08-29 12:01:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:01:56,363 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 12:01:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:56,368 INFO L225 Difference]: With dead ends: 39 [2021-08-29 12:01:56,368 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 12:01:56,370 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:01:56,372 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.25ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:56,372 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.23ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 44.25ms Time] [2021-08-29 12:01:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 12:01:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 12:01:56,400 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 12:01:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-29 12:01:56,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-08-29 12:01:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:56,401 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-29 12:01:56,401 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 12:01:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-29 12:01:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:01:56,402 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:56,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:56,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:01:56,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-29 12:01:56,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:56,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239375862] [2021-08-29 12:01:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:56,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:56,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:56,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723679778] [2021-08-29 12:01:56,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:56,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:56,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:56,425 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 12:01:56,426 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 12:01:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:56,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:01:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:56,597 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 12:01:56,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:01:56,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239375862] [2021-08-29 12:01:56,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:56,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723679778] [2021-08-29 12:01:56,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723679778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:01:56,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:01:56,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:01:56,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178079074] [2021-08-29 12:01:56,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:01:56,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:01:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:01:56,600 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 12:01:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:56,693 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-08-29 12:01:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:01:56,694 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 12:01:56,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:56,694 INFO L225 Difference]: With dead ends: 29 [2021-08-29 12:01:56,694 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 12:01:56,694 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:01:56,695 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.32ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:56,696 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 78.32ms Time] [2021-08-29 12:01:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 12:01:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-08-29 12:01:56,698 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 12:01:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-29 12:01:56,699 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2021-08-29 12:01:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:56,699 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-29 12:01:56,699 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 12:01:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-29 12:01:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:01:56,700 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:56,700 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:56,719 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 12:01:56,912 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 12:01:56,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2039286562, now seen corresponding path program 1 times [2021-08-29 12:01:56,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:56,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182811773] [2021-08-29 12:01:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:56,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:56,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:56,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340161085] [2021-08-29 12:01:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:56,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:56,924 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 12:01:56,925 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 12:01:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:56,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-29 12:01:56,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:57,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:01:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:01:57,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:57,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182811773] [2021-08-29 12:01:57,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:57,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340161085] [2021-08-29 12:01:57,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340161085] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:01:57,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:01:57,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-29 12:01:57,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087576358] [2021-08-29 12:01:57,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 12:01:57,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 12:01:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-08-29 12:01:57,578 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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 12:01:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:57,798 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-08-29 12:01:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:01:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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) Word has length 14 [2021-08-29 12:01:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:57,799 INFO L225 Difference]: With dead ends: 41 [2021-08-29 12:01:57,799 INFO L226 Difference]: Without dead ends: 21 [2021-08-29 12:01:57,800 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 297.16ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-08-29 12:01:57,801 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 63.32ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:57,801 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [18 Valid, 77 Invalid, 0 Unknown, 25 Unchecked, 63.32ms Time] [2021-08-29 12:01:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-29 12:01:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-29 12:01:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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 12:01:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-29 12:01:57,804 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-08-29 12:01:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:57,809 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-29 12:01:57,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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 12:01:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-29 12:01:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:01:57,810 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:57,810 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:57,828 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 12:01:58,026 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 12:01:58,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2037439520, now seen corresponding path program 1 times [2021-08-29 12:01:58,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:58,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139673159] [2021-08-29 12:01:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:58,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:58,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:58,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268554717] [2021-08-29 12:01:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:58,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:58,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:58,053 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 12:01:58,063 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 12:01:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:58,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-29 12:01:58,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:58,188 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 12:01:58,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:01:58,223 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 12:01:58,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:58,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139673159] [2021-08-29 12:01:58,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:58,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268554717] [2021-08-29 12:01:58,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268554717] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:01:58,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:01:58,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-08-29 12:01:58,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128854665] [2021-08-29 12:01:58,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:01:58,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:01:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:01:58,225 INFO L87 Difference]: Start difference. First operand 21 states and 22 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 12:01:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:58,332 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-29 12:01:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:01:58,333 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 12:01:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:58,334 INFO L225 Difference]: With dead ends: 30 [2021-08-29 12:01:58,334 INFO L226 Difference]: Without dead ends: 28 [2021-08-29 12:01:58,335 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 76.85ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:01:58,335 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.25ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:58,336 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 53.25ms Time] [2021-08-29 12:01:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-29 12:01:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-08-29 12:01:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 12:01:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-08-29 12:01:58,338 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-08-29 12:01:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:58,339 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-08-29 12:01:58,339 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 12:01:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-08-29 12:01:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 12:01:58,339 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:01:58,339 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:01:58,361 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 12:01:58,552 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 12:01:58,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:01:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:01:58,553 INFO L82 PathProgramCache]: Analyzing trace with hash -878006574, now seen corresponding path program 1 times [2021-08-29 12:01:58,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:01:58,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119905811] [2021-08-29 12:01:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:58,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:01:58,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:01:58,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904165421] [2021-08-29 12:01:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:01:58,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:58,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:01:58,564 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) [2021-08-29 12:01:58,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:01:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:01:58,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-29 12:01:58,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:01:58,770 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 12:01:58,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:01:58,993 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 12:01:58,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:01:58,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119905811] [2021-08-29 12:01:58,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:01:58,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904165421] [2021-08-29 12:01:58,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904165421] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 12:01:58,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 12:01:58,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2021-08-29 12:01:58,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768343284] [2021-08-29 12:01:58,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:01:58,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:01:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:01:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-29 12:01:58,994 INFO L87 Difference]: Start difference. First operand 19 states and 20 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 12:01:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:01:59,340 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-29 12:01:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 12:01:59,341 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 12:01:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:01:59,341 INFO L225 Difference]: With dead ends: 19 [2021-08-29 12:01:59,341 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:01:59,342 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 288.86ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-08-29 12:01:59,342 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.06ms IncrementalHoareTripleChecker+Time [2021-08-29 12:01:59,342 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 204.06ms Time] [2021-08-29 12:01:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:01:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:01:59,343 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 12:01:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:01:59,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-29 12:01:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:01:59,343 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:01:59,343 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 12:01:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:01:59,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:01:59,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 12:01:59,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 12:01:59,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:01:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:01:59,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:01:59,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:59,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:59,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:59,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L861 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2021-08-29 12:01:59,917 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse3 (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0)) (.cse5 (<= 0 ULTIMATE.start_main_~X~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0))) (.cse0 (* 2 ULTIMATE.start_main_~Y~0)) (.cse2 (<= 0 ULTIMATE.start_main_~Y~0)) (.cse4 (<= ULTIMATE.start_main_~X~0 2)) (.cse9 (<= ULTIMATE.start_main_~Y~0 2)) (.cse7 (* 2 ULTIMATE.start_main_~y~0)) (.cse8 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (or (and (< ULTIMATE.start_main_~v~0 .cse0) (= ULTIMATE.start_main_~y~0 0) .cse1 .cse2 (= (* 4 ULTIMATE.start_main_~Y~0) .cse3) .cse4) (and (= ULTIMATE.start_main_~x~0 0) .cse5 .cse1 (= .cse0 .cse3) .cse2 (= (+ .cse6 .cse7 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse8)) .cse4 .cse9) (let ((.cse10 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0)))) (and .cse5 .cse1 (= (+ .cse6 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse10)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse4 .cse9 (or (= (+ .cse10 .cse7) .cse8) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~X~0)))))) [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-08-29 12:01:59,918 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 (<= 0 ULTIMATE.start_main_~X~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* 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) (<= 0 ULTIMATE.start_main_~Y~0) (<= ULTIMATE.start_main_~X~0 2) (<= ULTIMATE.start_main_~Y~0 2) (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 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L858 garLoopResultBuilder]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-08-29 12:01:59,918 INFO L861 garLoopResultBuilder]: At program point L14-5(lines 13 19) the Hoare annotation is: true [2021-08-29 12:01:59,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:01:59,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:01:59 BoogieIcfgContainer [2021-08-29 12:01:59,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:01:59,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:01:59,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:01:59,933 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:01:59,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:01:56" (3/4) ... [2021-08-29 12:01:59,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:01:59,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-29 12:01:59,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:01:59,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:01:59,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:01:59,962 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:01:59,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:01:59,963 INFO L158 Benchmark]: Toolchain (without parser) took 4379.14ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 37.7MB in the beginning and 55.0MB in the end (delta: -17.3MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-08-29 12:01:59,963 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:01:59,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.54ms. Allocated memory is still 58.7MB. Free memory was 37.5MB in the beginning and 43.2MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 12:01:59,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 41.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:01:59,964 INFO L158 Benchmark]: Boogie Preprocessor took 24.60ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 40.4MB in the end (delta: 969.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:01:59,964 INFO L158 Benchmark]: RCFGBuilder took 198.29ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 31.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:01:59,964 INFO L158 Benchmark]: TraceAbstraction took 3911.80ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 31.1MB in the beginning and 58.4MB in the end (delta: -27.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2021-08-29 12:01:59,964 INFO L158 Benchmark]: Witness Printer took 29.36ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:01:59,966 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 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 153.54ms. Allocated memory is still 58.7MB. Free memory was 37.5MB in the beginning and 43.2MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 41.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.60ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 40.4MB in the end (delta: 969.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.29ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 31.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3911.80ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 31.1MB in the beginning and 58.4MB in the end (delta: -27.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 29.36ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms 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: 3856.37ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 16.98ms, AutomataDifference: 885.67ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 369.42ms, InitialAbstractionConstructionTime: 8.86ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 443.21ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 378.55ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 300 IncrementalHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 0 mSDtfsCounter, 300 mSolverCounterSat, 3.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 680.20ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 27.47ms AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 187 HoareAnnotationTreeSize, 4 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 42.15ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 216 FormulaSimplificationTreeSizeReductionInter, 321.53ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 31.17ms SsaConstructionTime, 76.88ms SatisfiabilityAnalysisTime, 1320.19ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 10 QuantifiedInterpolants, 989 SizeOfPredicates, 44 NumberOfNonLiveVariables, 323 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/14 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: ((((((v < 2 * Y && y == 0) && cond == 1) && 0 <= Y) && 4 * Y == X + v) && X <= 2) || (((((((x == 0 && 0 <= X) && cond == 1) && 2 * Y == X + v) && 0 <= Y) && 2 * (x * Y) + 2 * y + 2 * Y == X + v + 2 * (x * y)) && X <= 2) && Y <= 2)) || (((((((0 <= X && cond == 1) && 2 * (x * Y) + 2 * Y == X + v + 2 * (y * X)) && 1 <= cond) && 0 <= Y) && X <= 2) && Y <= 2) && (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: ((((((0 <= X && cond == 1) && 2 * (x * Y) + 2 * Y == X + v + 2 * (y * X)) && 1 <= cond) && 0 <= Y) && X <= 2) && Y <= 2) && (2 * (y * X) + 2 * y == 2 * (x * y) || x <= X) RESULT: Ultimate proved your program to be correct! [2021-08-29 12:01:59,995 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...