./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/mannadiv_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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:48:10,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:48:10,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:48:10,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:48:10,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:48:10,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:48:10,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:48:10,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:48:10,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:48:10,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:48:10,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:48:10,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:48:10,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:48:10,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:48:10,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:48:10,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:48:10,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:48:10,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:48:10,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:48:10,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:48:10,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:48:10,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:48:10,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:48:10,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:48:10,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:48:10,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:48:10,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:48:10,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:48:10,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:48:10,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:48:10,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:48:10,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:48:10,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:48:10,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:48:10,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:48:10,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:48:10,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:48:10,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:48:10,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:48:10,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:48:10,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:48:10,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:48:10,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:48:10,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:48:10,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:48:10,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:48:10,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:48:10,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:48:10,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:48:10,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:48:10,239 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:48:10,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:48:10,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:48:10,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:48:10,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:48:10,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:48:10,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:48:10,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:48:10,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:48:10,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:48:10,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:48:10,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:48:10,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:48:10,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:48:10,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:48:10,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2021-12-21 12:48:10,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:48:10,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:48:10,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:48:10,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:48:10,440 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:48:10,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c [2021-12-21 12:48:10,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b69ed6bd/04204fc5682848a395b56913609e2d63/FLAGbcd42f729 [2021-12-21 12:48:10,863 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:48:10,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c [2021-12-21 12:48:10,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b69ed6bd/04204fc5682848a395b56913609e2d63/FLAGbcd42f729 [2021-12-21 12:48:10,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b69ed6bd/04204fc5682848a395b56913609e2d63 [2021-12-21 12:48:10,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:48:10,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:48:10,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:48:10,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:48:10,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:48:10,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:48:10" (1/1) ... [2021-12-21 12:48:10,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0add1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:10, skipping insertion in model container [2021-12-21 12:48:10,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:48:10" (1/1) ... [2021-12-21 12:48:10,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:48:10,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:48:11,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c[573,586] [2021-12-21 12:48:11,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:48:11,033 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:48:11,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c[573,586] [2021-12-21 12:48:11,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:48:11,052 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:48:11,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11 WrapperNode [2021-12-21 12:48:11,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:48:11,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:48:11,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:48:11,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:48:11,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,075 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-12-21 12:48:11,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:48:11,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:48:11,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:48:11,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:48:11,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:48:11,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:48:11,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:48:11,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:48:11,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (1/1) ... [2021-12-21 12:48:11,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:48:11,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:48:11,114 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) [2021-12-21 12:48:11,157 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 [2021-12-21 12:48:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:48:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:48:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:48:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:48:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:48:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:48:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:48:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:48:11,225 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:48:11,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:48:11,328 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:48:11,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:48:11,341 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:48:11,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:48:11 BoogieIcfgContainer [2021-12-21 12:48:11,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:48:11,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:48:11,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:48:11,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:48:11,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:48:10" (1/3) ... [2021-12-21 12:48:11,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51613283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:48:11, skipping insertion in model container [2021-12-21 12:48:11,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:48:11" (2/3) ... [2021-12-21 12:48:11,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51613283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:48:11, skipping insertion in model container [2021-12-21 12:48:11,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:48:11" (3/3) ... [2021-12-21 12:48:11,347 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound2.c [2021-12-21 12:48:11,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:48:11,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:48:11,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:48:11,387 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:48:11,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:48:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:48:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 12:48:11,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:48:11,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:48:11,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:48:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:48:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1928678447, now seen corresponding path program 1 times [2021-12-21 12:48:11,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:48:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553557416] [2021-12-21 12:48:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:48:11,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:48:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:48:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:48:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:48:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:48:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:48:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 12:48:11,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:48:11,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553557416] [2021-12-21 12:48:11,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553557416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:48:11,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:48:11,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:48:11,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717818751] [2021-12-21 12:48:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:48:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:48:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:48:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:48:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:48:11,556 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:48:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:48:11,568 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2021-12-21 12:48:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:48:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-12-21 12:48:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:48:11,574 INFO L225 Difference]: With dead ends: 45 [2021-12-21 12:48:11,574 INFO L226 Difference]: Without dead ends: 20 [2021-12-21 12:48:11,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:48:11,579 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:48:11,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:48:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-21 12:48:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-21 12:48:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 12:48:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-21 12:48:11,603 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2021-12-21 12:48:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:48:11,604 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-21 12:48:11,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:48:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-21 12:48:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 12:48:11,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:48:11,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:48:11,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:48:11,606 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:48:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:48:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1584630691, now seen corresponding path program 1 times [2021-12-21 12:48:11,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:48:11,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506737383] [2021-12-21 12:48:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:48:11,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:48:11,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:48:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184763001] [2021-12-21 12:48:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:48:11,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:48:11,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:48:11,636 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) [2021-12-21 12:48:11,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:48:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:48:11,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 12:48:11,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:48:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 12:48:11,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:48:11,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:48:11,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506737383] [2021-12-21 12:48:11,948 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:48:11,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184763001] [2021-12-21 12:48:11,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184763001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:48:11,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:48:11,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:48:11,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360632252] [2021-12-21 12:48:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:48:11,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:48:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:48:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:48:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:48:11,957 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 12:48:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:48:12,026 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-21 12:48:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:48:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-12-21 12:48:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:48:12,028 INFO L225 Difference]: With dead ends: 31 [2021-12-21 12:48:12,028 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 12:48:12,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:48:12,029 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:48:12,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:48:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 12:48:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-12-21 12:48:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:48:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-21 12:48:12,035 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2021-12-21 12:48:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:48:12,036 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-21 12:48:12,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 12:48:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-21 12:48:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 12:48:12,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:48:12,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:48:12,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:48:12,247 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 [2021-12-21 12:48:12,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:48:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:48:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1566339285, now seen corresponding path program 1 times [2021-12-21 12:48:12,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:48:12,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939203370] [2021-12-21 12:48:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:48:12,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:48:12,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:48:12,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531387392] [2021-12-21 12:48:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:48:12,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:48:12,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:48:12,293 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) [2021-12-21 12:48:12,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:48:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:48:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 12:48:12,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:48:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 12:48:12,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:48:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 12:48:12,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:48:12,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939203370] [2021-12-21 12:48:12,550 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:48:12,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531387392] [2021-12-21 12:48:12,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531387392] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:48:12,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:48:12,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-21 12:48:12,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574620266] [2021-12-21 12:48:12,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:48:12,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:48:12,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:48:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:48:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:48:12,553 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:48:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:48:12,602 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-21 12:48:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:48:12,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-21 12:48:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:48:12,603 INFO L225 Difference]: With dead ends: 26 [2021-12-21 12:48:12,603 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 12:48:12,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:48:12,604 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:48:12,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 105 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:48:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 12:48:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 12:48:12,606 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) [2021-12-21 12:48:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 12:48:12,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-12-21 12:48:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:48:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 12:48:12,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:48:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 12:48:12,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 12:48:12,609 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:48:12,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:48:12,819 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 [2021-12-21 12:48:12,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 12:48:12,894 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|))) (and (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1|)) (not (= |ULTIMATE.start_main_~x2~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)))) [2021-12-21 12:48:12,894 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 12:48:12,894 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-12-21 12:48:12,894 INFO L861 garLoopResultBuilder]: At program point L50(lines 22 51) the Hoare annotation is: true [2021-12-21 12:48:12,894 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 47) no Hoare annotation was computed. [2021-12-21 12:48:12,894 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (not (= |ULTIMATE.start_main_~x2~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|))) [2021-12-21 12:48:12,895 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (not (= |ULTIMATE.start_main_~x2~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|))) [2021-12-21 12:48:12,895 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2021-12-21 12:48:12,895 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 12:48:12,895 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 12:48:12,896 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 12:48:12,897 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648))) [2021-12-21 12:48:12,899 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648))) [2021-12-21 12:48:12,899 INFO L858 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2021-12-21 12:48:12,899 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-12-21 12:48:12,899 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-21 12:48:12,899 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2021-12-21 12:48:12,899 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-12-21 12:48:12,900 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-12-21 12:48:12,900 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-12-21 12:48:12,900 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-12-21 12:48:12,900 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-12-21 12:48:12,900 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-12-21 12:48:12,900 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-12-21 12:48:12,903 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 12:48:12,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:48:12,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:48:12 BoogieIcfgContainer [2021-12-21 12:48:12,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:48:12,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:48:12,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:48:12,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:48:12,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:48:11" (3/4) ... [2021-12-21 12:48:12,925 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 12:48:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-21 12:48:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-21 12:48:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-21 12:48:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-21 12:48:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 12:48:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 12:48:12,952 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 12:48:12,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:48:12,953 INFO L158 Benchmark]: Toolchain (without parser) took 2071.84ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.1MB in the beginning and 66.2MB in the end (delta: 11.9MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,953 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:48:12,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.56ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 86.5MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.31ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 85.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,953 INFO L158 Benchmark]: Boogie Preprocessor took 12.72ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.8MB in the end (delta: 961.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,954 INFO L158 Benchmark]: RCFGBuilder took 252.89ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 74.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,954 INFO L158 Benchmark]: TraceAbstraction took 1578.48ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 74.3MB in the beginning and 69.2MB in the end (delta: 5.1MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,954 INFO L158 Benchmark]: Witness Printer took 29.80ms. Allocated memory is still 136.3MB. Free memory was 69.2MB in the beginning and 66.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:48:12,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.56ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 86.5MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.31ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 85.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.72ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.8MB in the end (delta: 961.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.89ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 74.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1578.48ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 74.3MB in the beginning and 69.2MB in the end (delta: 5.1MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Witness Printer took 29.80ms. Allocated memory is still 136.3MB. Free memory was 69.2MB in the beginning and 66.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 203 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 55 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 91 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 10 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 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 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((x2 <= 2147483647 && !(x2 == 0)) && 0 <= x2 + 2147483648) && x1 == x2 * y1 + y2 + y3 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-21 12:48:12,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE