./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/ps3-ll_valuebound50.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 2bbd590b471bbc2b8578e4cdd51bc82209f70d419c139ae39968994eaddc5edf --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 07:49:28,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 07:49:28,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 07:49:28,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 07:49:28,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 07:49:28,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 07:49:28,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 07:49:28,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 07:49:28,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 07:49:28,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 07:49:28,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 07:49:28,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 07:49:28,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 07:49:28,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 07:49:28,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 07:49:28,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 07:49:28,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 07:49:28,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 07:49:28,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 07:49:28,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 07:49:28,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 07:49:28,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 07:49:28,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 07:49:28,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 07:49:28,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 07:49:28,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 07:49:28,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 07:49:28,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 07:49:28,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 07:49:28,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 07:49:28,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 07:49:28,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 07:49:28,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 07:49:28,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 07:49:28,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 07:49:28,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 07:49:28,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 07:49:28,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 07:49:28,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 07:49:28,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 07:49:28,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 07:49:28,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 07:49:28,196 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 07:49:28,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 07:49:28,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 07:49:28,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 07:49:28,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 07:49:28,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 07:49:28,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 07:49:28,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 07:49:28,198 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 07:49:28,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 07:49:28,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 07:49:28,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 07:49:28,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 07:49:28,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 07:49:28,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 07:49:28,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:49:28,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 07:49:28,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 07:49:28,202 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bbd590b471bbc2b8578e4cdd51bc82209f70d419c139ae39968994eaddc5edf [2023-02-17 07:49:28,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 07:49:28,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 07:49:28,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 07:49:28,417 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 07:49:28,418 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 07:49:28,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound50.c [2023-02-17 07:49:29,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 07:49:29,530 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 07:49:29,531 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound50.c [2023-02-17 07:49:29,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9af3627f/3eab0f9a4b8144e68c8296c30d5cd0d0/FLAGf14a38231 [2023-02-17 07:49:29,555 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9af3627f/3eab0f9a4b8144e68c8296c30d5cd0d0 [2023-02-17 07:49:29,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 07:49:29,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 07:49:29,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 07:49:29,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 07:49:29,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 07:49:29,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b4591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29, skipping insertion in model container [2023-02-17 07:49:29,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 07:49:29,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 07:49:29,668 WARN L237 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/ps3-ll_valuebound50.c[458,471] [2023-02-17 07:49:29,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:49:29,683 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 07:49:29,692 WARN L237 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/ps3-ll_valuebound50.c[458,471] [2023-02-17 07:49:29,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:49:29,713 INFO L208 MainTranslator]: Completed translation [2023-02-17 07:49:29,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29 WrapperNode [2023-02-17 07:49:29,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 07:49:29,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 07:49:29,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 07:49:29,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 07:49:29,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,737 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-02-17 07:49:29,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 07:49:29,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 07:49:29,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 07:49:29,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 07:49:29,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 07:49:29,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 07:49:29,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 07:49:29,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 07:49:29,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (1/1) ... [2023-02-17 07:49:29,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:49:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:49:29,804 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) [2023-02-17 07:49:29,828 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 [2023-02-17 07:49:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 07:49:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 07:49:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 07:49:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 07:49:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 07:49:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 07:49:29,884 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 07:49:29,885 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 07:49:30,013 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 07:49:30,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 07:49:30,019 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 07:49:30,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:49:30 BoogieIcfgContainer [2023-02-17 07:49:30,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 07:49:30,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 07:49:30,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 07:49:30,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 07:49:30,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 07:49:29" (1/3) ... [2023-02-17 07:49:30,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a27ff75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:49:30, skipping insertion in model container [2023-02-17 07:49:30,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:49:29" (2/3) ... [2023-02-17 07:49:30,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a27ff75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:49:30, skipping insertion in model container [2023-02-17 07:49:30,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:49:30" (3/3) ... [2023-02-17 07:49:30,028 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound50.c [2023-02-17 07:49:30,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 07:49:30,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 07:49:30,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 07:49:30,091 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c1732f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 07:49:30,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 07:49:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:49:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 07:49:30,101 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:49:30,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:49:30,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:49:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:49:30,107 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2023-02-17 07:49:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:49:30,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30825355] [2023-02-17 07:49:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:49:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:49:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:49:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30825355] [2023-02-17 07:49:30,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 07:49:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441981847] [2023-02-17 07:49:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:49:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:49:30,204 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) [2023-02-17 07:49:30,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 07:49:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:49:30,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 07:49:30,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:49:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:49:30,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 07:49:30,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441981847] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:49:30,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:49:30,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 07:49:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298382197] [2023-02-17 07:49:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:49:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 07:49:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:49:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 07:49:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 07:49:30,326 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:49:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:49:30,362 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-02-17 07:49:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 07:49:30,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 07:49:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:49:30,367 INFO L225 Difference]: With dead ends: 33 [2023-02-17 07:49:30,368 INFO L226 Difference]: Without dead ends: 14 [2023-02-17 07:49:30,370 INFO L412 NwaCegarLoop]: 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 [2023-02-17 07:49:30,372 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2023-02-17 07:49:30,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:49:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-17 07:49:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-17 07:49:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 07:49:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-17 07:49:30,406 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-02-17 07:49:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:49:30,407 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-17 07:49:30,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:49:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-17 07:49:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 07:49:30,408 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:49:30,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:49:30,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 07:49:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 07:49:30,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:49:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:49:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2023-02-17 07:49:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:49:30,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676337529] [2023-02-17 07:49:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:49:30,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:49:30,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782097929] [2023-02-17 07:49:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:49:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:49:30,631 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) [2023-02-17 07:49:30,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 07:49:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:49:30,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 07:49:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:49:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:49:30,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 07:49:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:49:30,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676337529] [2023-02-17 07:49:30,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:49:30,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782097929] [2023-02-17 07:49:30,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782097929] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:49:30,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:49:30,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 07:49:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568587156] [2023-02-17 07:49:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:49:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 07:49:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:49:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 07:49:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 07:49:30,728 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:49:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:49:30,771 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-02-17 07:49:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 07:49:30,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 07:49:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:49:30,773 INFO L225 Difference]: With dead ends: 24 [2023-02-17 07:49:30,773 INFO L226 Difference]: Without dead ends: 21 [2023-02-17 07:49:30,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 07:49:30,775 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 07:49:30,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:49:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-17 07:49:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-17 07:49:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:49:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-17 07:49:30,783 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2023-02-17 07:49:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:49:30,783 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-17 07:49:30,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:49:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-17 07:49:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 07:49:30,784 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:49:30,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:49:30,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 07:49:30,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 07:49:30,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:49:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:49:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -610823942, now seen corresponding path program 1 times [2023-02-17 07:49:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:49:30,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255578346] [2023-02-17 07:49:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:49:30,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:49:30,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241907451] [2023-02-17 07:49:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:49:30,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:49:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:49:31,001 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) [2023-02-17 07:49:31,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 07:49:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:49:31,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 07:49:31,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:49:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:49:31,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:49:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:49:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:49:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255578346] [2023-02-17 07:49:31,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:49:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241907451] [2023-02-17 07:49:31,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241907451] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 07:49:31,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 07:49:31,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-17 07:49:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346230388] [2023-02-17 07:49:31,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 07:49:31,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 07:49:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:49:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 07:49:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-17 07:49:31,184 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:49:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:49:31,247 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-02-17 07:49:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 07:49:31,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-17 07:49:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:49:31,248 INFO L225 Difference]: With dead ends: 25 [2023-02-17 07:49:31,248 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 07:49:31,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-17 07:49:31,250 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 07:49:31,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 07:49:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 07:49:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 07:49:31,255 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) [2023-02-17 07:49:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 07:49:31,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-02-17 07:49:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:49:31,256 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 07:49:31,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:49:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 07:49:31,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 07:49:31,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 07:49:31,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 07:49:31,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:49:31,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 07:49:31,472 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 07:49:31,472 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 0)) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0)) (= 0 (+ (+ (+ (* 6 |ULTIMATE.start_main_~x~0#1|) (- (* (* (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- (* (* 3 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0))) [2023-02-17 07:49:31,473 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 0)) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0)) (= 0 (+ (+ (+ (* 6 |ULTIMATE.start_main_~x~0#1|) (- (* (* (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- (* (* 3 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0))) [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 39) the Hoare annotation is: true [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 0)) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0)) (= 0 (+ (+ (+ (* 6 |ULTIMATE.start_main_~x~0#1|) (- (* (* (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- (* (* 3 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))) (- |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0))) [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-02-17 07:49:31,473 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-02-17 07:49:31,474 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-02-17 07:49:31,474 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-02-17 07:49:31,474 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-02-17 07:49:31,476 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-17 07:49:31,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 07:49:31,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 07:49:31 BoogieIcfgContainer [2023-02-17 07:49:31,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 07:49:31,493 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 07:49:31,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 07:49:31,493 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 07:49:31,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:49:30" (3/4) ... [2023-02-17 07:49:31,495 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 07:49:31,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 07:49:31,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-17 07:49:31,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 07:49:31,503 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 07:49:31,503 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 07:49:31,530 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 07:49:31,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 07:49:31,530 INFO L158 Benchmark]: Toolchain (without parser) took 1971.88ms. Allocated memory is still 115.3MB. Free memory was 80.9MB in the beginning and 42.6MB in the end (delta: 38.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,530 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 89.3MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:49:31,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.61ms. Allocated memory is still 115.3MB. Free memory was 80.6MB in the beginning and 70.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.64ms. Allocated memory is still 115.3MB. Free memory was 70.4MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,538 INFO L158 Benchmark]: Boogie Preprocessor took 32.24ms. Allocated memory is still 115.3MB. Free memory was 68.7MB in the beginning and 67.8MB in the end (delta: 830.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:49:31,538 INFO L158 Benchmark]: RCFGBuilder took 249.43ms. Allocated memory is still 115.3MB. Free memory was 67.8MB in the beginning and 58.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,538 INFO L158 Benchmark]: TraceAbstraction took 1469.63ms. Allocated memory is still 115.3MB. Free memory was 57.5MB in the beginning and 44.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,538 INFO L158 Benchmark]: Witness Printer took 36.83ms. Allocated memory is still 115.3MB. Free memory was 44.8MB in the beginning and 42.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:49:31,539 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 115.3MB. Free memory was 89.3MB in the beginning and 89.3MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 153.61ms. Allocated memory is still 115.3MB. Free memory was 80.6MB in the beginning and 70.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.64ms. Allocated memory is still 115.3MB. Free memory was 70.4MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.24ms. Allocated memory is still 115.3MB. Free memory was 68.7MB in the beginning and 67.8MB in the end (delta: 830.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.43ms. Allocated memory is still 115.3MB. Free memory was 67.8MB in the beginning and 58.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1469.63ms. Allocated memory is still 115.3MB. Free memory was 57.5MB in the beginning and 44.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 36.83ms. Allocated memory is still 115.3MB. Free memory was 44.8MB in the beginning and 42.6MB in the end (delta: 2.2MB). 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: 12]: 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 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 42 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 137 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 5 NumberOfNonLiveVariables, 161 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/8 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((x == y * y + 0 && y + -1 == 0) || 0 == 6 * x + -(2 * y * y * y) + -(3 * y * y) + -y) || (x == 0 && y == 0) RESULT: Ultimate proved your program to be correct! [2023-02-17 07:49:31,583 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