./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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/geo3-ll_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8cbadc91a04c54d3edeab185746e7079308438831f961005daba56edf159b5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 12:24:57,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 12:24:57,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 12:24:57,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 12:24:57,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 12:24:57,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 12:24:57,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 12:24:57,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 12:24:57,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 12:24:57,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 12:24:57,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 12:24:57,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 12:24:57,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 12:24:57,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 12:24:57,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 12:24:57,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 12:24:57,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 12:24:57,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 12:24:57,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 12:24:57,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 12:24:57,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 12:24:57,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 12:24:57,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 12:24:57,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 12:24:57,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 12:24:57,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 12:24:57,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 12:24:57,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 12:24:57,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 12:24:57,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 12:24:57,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 12:24:57,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 12:24:57,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 12:24:57,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 12:24:57,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 12:24:57,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 12:24:57,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 12:24:57,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 12:24:57,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 12:24:57,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 12:24:57,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 12:24:57,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 12:24:57,496 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 12:24:57,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 12:24:57,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 12:24:57,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 12:24:57,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 12:24:57,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 12:24:57,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 12:24:57,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 12:24:57,499 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 12:24:57,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 12:24:57,499 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 12:24:57,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 12:24:57,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 12:24:57,500 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 12:24:57,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 12:24:57,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 12:24:57,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 12:24:57,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 12:24:57,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 12:24:57,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 12:24:57,502 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 12:24:57,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 12:24:57,503 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 12:24:57,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8cbadc91a04c54d3edeab185746e7079308438831f961005daba56edf159b5c [2023-02-14 12:24:57,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 12:24:57,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 12:24:57,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 12:24:57,755 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 12:24:57,755 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 12:24:57,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c [2023-02-14 12:24:58,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 12:24:59,003 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 12:24:59,003 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c [2023-02-14 12:24:59,008 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/497c10fd5/5150af418463412284f2f6badd89bc55/FLAG7982d84cc [2023-02-14 12:24:59,018 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/497c10fd5/5150af418463412284f2f6badd89bc55 [2023-02-14 12:24:59,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 12:24:59,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 12:24:59,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 12:24:59,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 12:24:59,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 12:24:59,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3beb4ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59, skipping insertion in model container [2023-02-14 12:24:59,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 12:24:59,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 12:24:59,147 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/geo3-ll_valuebound2.c[525,538] [2023-02-14 12:24:59,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 12:24:59,172 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 12:24:59,183 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/geo3-ll_valuebound2.c[525,538] [2023-02-14 12:24:59,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 12:24:59,201 INFO L208 MainTranslator]: Completed translation [2023-02-14 12:24:59,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59 WrapperNode [2023-02-14 12:24:59,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 12:24:59,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 12:24:59,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 12:24:59,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 12:24:59,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,223 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-02-14 12:24:59,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 12:24:59,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 12:24:59,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 12:24:59,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 12:24:59,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 12:24:59,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 12:24:59,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 12:24:59,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 12:24:59,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (1/1) ... [2023-02-14 12:24:59,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 12:24:59,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:24:59,262 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) [2023-02-14 12:24:59,269 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 [2023-02-14 12:24:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 12:24:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 12:24:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 12:24:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 12:24:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 12:24:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 12:24:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 12:24:59,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 12:24:59,335 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 12:24:59,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 12:24:59,432 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 12:24:59,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 12:24:59,437 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 12:24:59,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:24:59 BoogieIcfgContainer [2023-02-14 12:24:59,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 12:24:59,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 12:24:59,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 12:24:59,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 12:24:59,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 12:24:59" (1/3) ... [2023-02-14 12:24:59,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d4d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:24:59, skipping insertion in model container [2023-02-14 12:24:59,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:24:59" (2/3) ... [2023-02-14 12:24:59,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d4d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:24:59, skipping insertion in model container [2023-02-14 12:24:59,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:24:59" (3/3) ... [2023-02-14 12:24:59,443 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound2.c [2023-02-14 12:24:59,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 12:24:59,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 12:24:59,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 12:24:59,496 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;@cbb7151, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 12:24:59,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 12:24:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 12:24:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 12:24:59,506 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:24:59,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:24:59,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:24:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:24:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1024559358, now seen corresponding path program 1 times [2023-02-14 12:24:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:24:59,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351093850] [2023-02-14 12:24:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:24:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:24:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:24:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:24:59,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351093850] [2023-02-14 12:24:59,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 12:24:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484238504] [2023-02-14 12:24:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:24:59,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:24:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:24:59,625 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) [2023-02-14 12:24:59,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 12:24:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:24:59,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 12:24:59,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:24:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-14 12:24:59,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 12:24:59,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484238504] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:24:59,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:24:59,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 12:24:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59759682] [2023-02-14 12:24:59,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:24:59,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 12:24:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:24:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 12:24:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 12:24:59,772 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 12:24:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:24:59,786 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-02-14 12:24:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 12:24:59,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-14 12:24:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:24:59,792 INFO L225 Difference]: With dead ends: 49 [2023-02-14 12:24:59,792 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 12:24:59,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 12:24:59,802 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2023-02-14 12:24:59,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 12:24:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 12:24:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-14 12:24:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 12:24:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-02-14 12:24:59,828 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 25 [2023-02-14 12:24:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:24:59,829 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-02-14 12:24:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 12:24:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-02-14 12:24:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 12:24:59,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:24:59,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:24:59,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 12:25:00,036 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 [2023-02-14 12:25:00,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1201662840, now seen corresponding path program 1 times [2023-02-14 12:25:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:00,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078151330] [2023-02-14 12:25:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:00,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:00,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349725842] [2023-02-14 12:25:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:00,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:00,095 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) [2023-02-14 12:25:00,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 12:25:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:00,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 12:25:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:00,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 12:25:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:00,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078151330] [2023-02-14 12:25:00,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349725842] [2023-02-14 12:25:00,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349725842] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:25:00,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:25:00,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 12:25:00,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697126939] [2023-02-14 12:25:00,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:25:00,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 12:25:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 12:25:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 12:25:00,374 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 12:25:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:00,442 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2023-02-14 12:25:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 12:25:00,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-02-14 12:25:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:00,444 INFO L225 Difference]: With dead ends: 32 [2023-02-14 12:25:00,444 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 12:25:00,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 12:25:00,446 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:00,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 77 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 12:25:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 12:25:00,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-14 12:25:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 12:25:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-02-14 12:25:00,454 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2023-02-14 12:25:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:00,455 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-02-14 12:25:00,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 12:25:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-02-14 12:25:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-14 12:25:00,456 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:00,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:00,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 12:25:00,661 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 [2023-02-14 12:25:00,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -202357475, now seen corresponding path program 1 times [2023-02-14 12:25:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077885687] [2023-02-14 12:25:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:00,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:00,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66788290] [2023-02-14 12:25:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:00,676 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) [2023-02-14 12:25:00,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 12:25:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:00,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 12:25:00,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:00,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 12:25:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:01,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:01,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077885687] [2023-02-14 12:25:01,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66788290] [2023-02-14 12:25:01,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66788290] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 12:25:01,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 12:25:01,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 12:25:01,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586014298] [2023-02-14 12:25:01,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 12:25:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 12:25:01,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:01,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 12:25:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-14 12:25:01,124 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 12:25:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:01,290 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2023-02-14 12:25:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 12:25:01,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2023-02-14 12:25:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:01,291 INFO L225 Difference]: With dead ends: 33 [2023-02-14 12:25:01,291 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 12:25:01,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-14 12:25:01,292 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:01,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 12:25:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 12:25:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 12:25:01,293 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) [2023-02-14 12:25:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 12:25:01,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2023-02-14 12:25:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:01,293 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 12:25:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 12:25:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 12:25:01,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 12:25:01,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 12:25:01,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 12:25:01,523 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 [2023-02-14 12:25:01,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 12:25:01,613 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 48) the Hoare annotation is: true [2023-02-14 12:25:01,614 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 45) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2023-02-14 12:25:01,614 INFO L895 garLoopResultBuilder]: At program point L36-3(lines 36 45) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2023-02-14 12:25:01,614 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 36 45) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-14 12:25:01,616 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-14 12:25:01,616 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-14 12:25:01,619 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-14 12:25:01,620 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 12:25:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 12:25:01 BoogieIcfgContainer [2023-02-14 12:25:01,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 12:25:01,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 12:25:01,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 12:25:01,631 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 12:25:01,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:24:59" (3/4) ... [2023-02-14 12:25:01,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 12:25:01,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-14 12:25:01,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 12:25:01,639 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-14 12:25:01,640 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 12:25:01,640 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 12:25:01,640 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 12:25:01,660 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 12:25:01,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 12:25:01,661 INFO L158 Benchmark]: Toolchain (without parser) took 2638.49ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 94.4MB in the beginning and 112.5MB in the end (delta: -18.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-02-14 12:25:01,661 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 100.5MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 12:25:01,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.92ms. Allocated memory is still 130.0MB. Free memory was 94.1MB in the beginning and 83.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 12:25:01,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.17ms. Allocated memory is still 130.0MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 12:25:01,662 INFO L158 Benchmark]: Boogie Preprocessor took 12.43ms. Allocated memory is still 130.0MB. Free memory was 82.1MB in the beginning and 81.3MB in the end (delta: 797.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 12:25:01,662 INFO L158 Benchmark]: RCFGBuilder took 201.20ms. Allocated memory is still 130.0MB. Free memory was 81.3MB in the beginning and 70.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 12:25:01,662 INFO L158 Benchmark]: TraceAbstraction took 2190.47ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 114.6MB in the end (delta: -44.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 12:25:01,662 INFO L158 Benchmark]: Witness Printer took 30.18ms. Allocated memory is still 157.3MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 12:25:01,664 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 130.0MB. Free memory was 100.6MB in the beginning and 100.5MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.92ms. Allocated memory is still 130.0MB. Free memory was 94.1MB in the beginning and 83.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.17ms. Allocated memory is still 130.0MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.43ms. Allocated memory is still 130.0MB. Free memory was 82.1MB in the beginning and 81.3MB in the end (delta: 797.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.20ms. Allocated memory is still 130.0MB. Free memory was 81.3MB in the beginning and 70.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2190.47ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 114.6MB in the end (delta: -44.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 30.18ms. Allocated memory is still 157.3MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). 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: 17]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 253 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 72 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 9 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 39 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 3 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 52/56 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: x * z + a == x + az * y RESULT: Ultimate proved your program to be correct! [2023-02-14 12:25:01,678 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