./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/prodbin-ll_valuebound5.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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:24:32,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:24:32,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:24:32,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:24:32,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:24:32,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:24:32,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:24:32,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:24:32,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:24:32,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:24:32,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:24:32,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:24:32,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:24:32,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:24:32,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:24:32,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:24:32,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:24:32,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:24:32,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:24:32,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:24:32,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:24:32,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:24:32,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:24:32,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:24:32,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:24:32,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:24:32,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:24:32,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:24:32,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:24:32,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:24:32,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:24:32,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:24:32,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:24:32,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:24:32,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:24:32,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:24:32,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:24:32,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:24:32,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:24:32,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:24:32,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:24:32,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 21:24:32,474 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:24:32,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:24:32,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:24:32,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:24:32,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:24:32,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:24:32,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:24:32,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:24:32,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:24:32,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 21:24:32,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:24:32,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 21:24:32,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 21:24:32,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:24:32,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 21:24:32,479 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:24:32,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:24:32,479 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:24:32,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2023-02-15 21:24:32,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:24:32,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:24:32,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:24:32,787 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:24:32,788 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:24:32,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-02-15 21:24:33,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:24:34,104 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:24:34,105 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-02-15 21:24:34,110 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26dbfe11d/b4225526f7114cefb26888477b440598/FLAGdaa93e49a [2023-02-15 21:24:34,121 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26dbfe11d/b4225526f7114cefb26888477b440598 [2023-02-15 21:24:34,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:24:34,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:24:34,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:24:34,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:24:34,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:24:34,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42845021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34, skipping insertion in model container [2023-02-15 21:24:34,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:24:34,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:24:34,276 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/prodbin-ll_valuebound5.c[537,550] [2023-02-15 21:24:34,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:24:34,301 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:24:34,314 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/prodbin-ll_valuebound5.c[537,550] [2023-02-15 21:24:34,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:24:34,337 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:24:34,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34 WrapperNode [2023-02-15 21:24:34,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:24:34,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:24:34,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:24:34,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:24:34,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,367 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-02-15 21:24:34,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:24:34,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:24:34,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:24:34,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:24:34,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:24:34,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:24:34,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:24:34,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:24:34,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (1/1) ... [2023-02-15 21:24:34,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:24:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:34,434 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) [2023-02-15 21:24:34,459 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 [2023-02-15 21:24:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 21:24:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 21:24:34,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 21:24:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 21:24:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:24:34,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:24:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 21:24:34,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 21:24:34,525 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:24:34,528 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:24:34,637 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:24:34,642 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:24:34,643 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 21:24:34,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:34 BoogieIcfgContainer [2023-02-15 21:24:34,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:24:34,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:24:34,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:24:34,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:24:34,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:24:34" (1/3) ... [2023-02-15 21:24:34,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a20fd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:24:34, skipping insertion in model container [2023-02-15 21:24:34,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:34" (2/3) ... [2023-02-15 21:24:34,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a20fd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:24:34, skipping insertion in model container [2023-02-15 21:24:34,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:34" (3/3) ... [2023-02-15 21:24:34,651 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2023-02-15 21:24:34,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:24:34,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 21:24:34,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:24:34,723 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;@2037cd69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:24:34,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 21:24:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-02-15 21:24:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 21:24:34,733 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:34,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:34,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2023-02-15 21:24:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:34,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79446085] [2023-02-15 21:24:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:34,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79446085] [2023-02-15 21:24:34,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 21:24:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766822394] [2023-02-15 21:24:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:34,877 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) [2023-02-15 21:24:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 21:24:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:34,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 21:24:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 21:24:34,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:24:34,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766822394] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:24:34,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:24:34,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:24:35,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894561325] [2023-02-15 21:24:35,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:24:35,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 21:24:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 21:24:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:24:35,075 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-15 21:24:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:35,093 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-02-15 21:24:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 21:24:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 24 [2023-02-15 21:24:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:35,102 INFO L225 Difference]: With dead ends: 51 [2023-02-15 21:24:35,102 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 21:24:35,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:24:35,109 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2023-02-15 21:24:35,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:24:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 21:24:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 21:24:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2023-02-15 21:24:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 21:24:35,145 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-02-15 21:24:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:35,146 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 21:24:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-02-15 21:24:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 21:24:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 21:24:35,150 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:35,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:35,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 21:24:35,355 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 [2023-02-15 21:24:35,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2023-02-15 21:24:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809692203] [2023-02-15 21:24:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:35,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:35,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102232774] [2023-02-15 21:24:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:35,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:35,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:35,384 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) [2023-02-15 21:24:35,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 21:24:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:35,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:24:35,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:24:35,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:24:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809692203] [2023-02-15 21:24:35,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102232774] [2023-02-15 21:24:35,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102232774] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:24:35,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:24:35,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 21:24:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104583267] [2023-02-15 21:24:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:24:35,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:24:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:24:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:24:35,587 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 21:24:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:35,688 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-15 21:24:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:24:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-15 21:24:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:35,690 INFO L225 Difference]: With dead ends: 39 [2023-02-15 21:24:35,690 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 21:24:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 21:24:35,691 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:35,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:24:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 21:24:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-02-15 21:24:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2023-02-15 21:24:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 21:24:35,699 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2023-02-15 21:24:35,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:35,700 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 21:24:35,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 21:24:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 21:24:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 21:24:35,701 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:35,702 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, 1] [2023-02-15 21:24:35,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:35,906 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 [2023-02-15 21:24:35,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2023-02-15 21:24:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:35,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367375729] [2023-02-15 21:24:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:35,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:35,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590960684] [2023-02-15 21:24:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:35,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:35,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:35,941 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) [2023-02-15 21:24:35,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 21:24:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:35,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 21:24:35,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:24:36,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 21:24:37,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367375729] [2023-02-15 21:24:37,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590960684] [2023-02-15 21:24:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590960684] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:24:37,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:24:37,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-02-15 21:24:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243294184] [2023-02-15 21:24:37,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 21:24:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 21:24:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:24:37,078 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 21:24:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:37,917 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-02-15 21:24:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 21:24:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 33 [2023-02-15 21:24:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:37,920 INFO L225 Difference]: With dead ends: 48 [2023-02-15 21:24:37,920 INFO L226 Difference]: Without dead ends: 46 [2023-02-15 21:24:37,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:24:37,922 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:37,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 99 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 21:24:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-15 21:24:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2023-02-15 21:24:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 21:24:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-02-15 21:24:37,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33 [2023-02-15 21:24:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-02-15 21:24:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 21:24:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-02-15 21:24:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 21:24:37,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:37,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:37,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:38,144 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 [2023-02-15 21:24:38,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2023-02-15 21:24:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:38,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493042394] [2023-02-15 21:24:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:38,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:38,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391895143] [2023-02-15 21:24:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:38,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:38,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:24:38,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 21:24:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:38,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 21:24:38,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 21:24:38,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 21:24:38,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:38,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493042394] [2023-02-15 21:24:38,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:38,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391895143] [2023-02-15 21:24:38,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391895143] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:24:38,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:24:38,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-15 21:24:38,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590241308] [2023-02-15 21:24:38,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:38,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:24:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:24:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:24:38,369 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 21:24:40,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 21:24:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:40,555 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-02-15 21:24:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:24:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-15 21:24:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:40,557 INFO L225 Difference]: With dead ends: 50 [2023-02-15 21:24:40,557 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 21:24:40,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:24:40,558 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:40,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 21:24:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 21:24:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-15 21:24:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 21:24:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-02-15 21:24:40,566 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 39 [2023-02-15 21:24:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:40,566 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-02-15 21:24:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 21:24:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-02-15 21:24:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 21:24:40,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:40,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:40,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:40,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:40,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:40,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1683883622, now seen corresponding path program 1 times [2023-02-15 21:24:40,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:40,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831274724] [2023-02-15 21:24:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:40,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:40,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:40,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215346223] [2023-02-15 21:24:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:40,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:40,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:40,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:24:40,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 21:24:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:40,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 21:24:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 21:24:41,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:43,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831274724] [2023-02-15 21:24:43,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215346223] [2023-02-15 21:24:43,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215346223] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:24:43,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:24:43,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 21:24:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161958213] [2023-02-15 21:24:43,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:43,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 21:24:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 21:24:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:24:43,889 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 21:24:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:44,662 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-02-15 21:24:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 21:24:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2023-02-15 21:24:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:44,664 INFO L225 Difference]: With dead ends: 63 [2023-02-15 21:24:44,664 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 21:24:44,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:24:44,665 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:44,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 115 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 21:24:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 21:24:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2023-02-15 21:24:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 21:24:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-15 21:24:44,676 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 42 [2023-02-15 21:24:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:44,676 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-15 21:24:44,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 21:24:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-15 21:24:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-15 21:24:44,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:44,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:44,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:44,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times [2023-02-15 21:24:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772056083] [2023-02-15 21:24:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:44,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:44,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184653217] [2023-02-15 21:24:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:44,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:24:44,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 21:24:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:44,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 21:24:44,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 21:24:45,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 21:24:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:45,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772056083] [2023-02-15 21:24:45,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:45,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184653217] [2023-02-15 21:24:45,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184653217] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:24:45,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:24:45,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2023-02-15 21:24:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866198219] [2023-02-15 21:24:45,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:45,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 21:24:45,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 21:24:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:24:45,502 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 21:24:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:45,972 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2023-02-15 21:24:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 21:24:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 51 [2023-02-15 21:24:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:45,977 INFO L225 Difference]: With dead ends: 71 [2023-02-15 21:24:45,977 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 21:24:45,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2023-02-15 21:24:45,979 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:45,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 123 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:24:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 21:24:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 21:24:45,980 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) [2023-02-15 21:24:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 21:24:45,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2023-02-15 21:24:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:45,980 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 21:24:45,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 21:24:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 21:24:45,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 21:24:45,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 21:24:45,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:46,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:46,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 21:24:47,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 21:24:47,048 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-15 21:24:47,048 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~b~0#1| 5) (<= 0 |ULTIMATE.start_main_~b~0#1|)) [2023-02-15 21:24:47,048 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-15 21:24:47,048 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-15 21:24:47,048 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-15 21:24:47,048 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 21:24:47,049 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 49) the Hoare annotation is: true [2023-02-15 21:24:47,049 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse8 (+ |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse2 (not (= 0 .cse8))) (.cse3 (<= 0 .cse8)) (.cse6 (= 1 (mod |ULTIMATE.start_main_~b~0#1| 2))) (.cse4 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse5 (<= |ULTIMATE.start_main_~b~0#1| 5))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse2 .cse3 .cse4 .cse5 (not .cse6)) (and .cse2 (= |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~a~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (div (+ |ULTIMATE.start_main_~b~0#1| (- 1)) 2)) .cse5 .cse6 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) .cse4 .cse5) (let ((.cse7 (div |ULTIMATE.start_main_~y~0#1| 2))) (and .cse0 .cse1 (<= .cse7 1) (= 1 (mod (+ .cse7 1) 2)) (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse5))))) [2023-02-15 21:24:47,049 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 21:24:47,049 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0) (<= |ULTIMATE.start_main_~b~0#1| 5))) [2023-02-15 21:24:47,049 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 21:24:47,050 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-02-15 21:24:47,050 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2023-02-15 21:24:47,050 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2023-02-15 21:24:47,050 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse8 (+ |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse2 (not (= 0 .cse8))) (.cse3 (<= 0 .cse8)) (.cse6 (= 1 (mod |ULTIMATE.start_main_~b~0#1| 2))) (.cse4 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse5 (<= |ULTIMATE.start_main_~b~0#1| 5))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse2 .cse3 .cse4 .cse5 (not .cse6)) (and .cse2 (= |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~a~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (div (+ |ULTIMATE.start_main_~b~0#1| (- 1)) 2)) .cse5 .cse6 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) .cse4 .cse5) (let ((.cse7 (div |ULTIMATE.start_main_~y~0#1| 2))) (and .cse0 .cse1 (<= .cse7 1) (= 1 (mod (+ .cse7 1) 2)) (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse5))))) [2023-02-15 21:24:47,050 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2023-02-15 21:24:47,050 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2023-02-15 21:24:47,051 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2023-02-15 21:24:47,052 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2023-02-15 21:24:47,052 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-02-15 21:24:47,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-15 21:24:47,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 21:24:47,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 09:24:47 BoogieIcfgContainer [2023-02-15 21:24:47,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 21:24:47,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 21:24:47,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 21:24:47,069 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 21:24:47,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:34" (3/4) ... [2023-02-15 21:24:47,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 21:24:47,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 21:24:47,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 21:24:47,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 21:24:47,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 21:24:47,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 21:24:47,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 21:24:47,107 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 21:24:47,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 21:24:47,108 INFO L158 Benchmark]: Toolchain (without parser) took 12983.06ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.5MB in the beginning and 102.3MB in the end (delta: -9.7MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,108 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:24:47,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.12ms. Allocated memory is still 132.1MB. Free memory was 92.3MB in the beginning and 82.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.40ms. Allocated memory is still 132.1MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,109 INFO L158 Benchmark]: Boogie Preprocessor took 35.92ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 79.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,109 INFO L158 Benchmark]: RCFGBuilder took 239.81ms. Allocated memory is still 132.1MB. Free memory was 79.4MB in the beginning and 69.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,110 INFO L158 Benchmark]: TraceAbstraction took 12422.25ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 68.6MB in the beginning and 105.4MB in the end (delta: -36.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,110 INFO L158 Benchmark]: Witness Printer took 38.81ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 102.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 21:24:47,111 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 107.0MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.12ms. Allocated memory is still 132.1MB. Free memory was 92.3MB in the beginning and 82.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.40ms. Allocated memory is still 132.1MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.92ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 79.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 239.81ms. Allocated memory is still 132.1MB. Free memory was 79.4MB in the beginning and 69.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12422.25ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 68.6MB in the beginning and 105.4MB in the end (delta: -36.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Witness Printer took 38.81ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 102.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 15]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.4s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 588 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 977 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 122 mSDtfsCounter, 977 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=5, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 40 NumberOfFragments, 281 HoareAnnotationTreeSize, 24 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 327 ConstructedInterpolants, 1 QuantifiedInterpolants, 1380 SizeOfPredicates, 21 NumberOfNonLiveVariables, 587 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 200/233 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((1 <= b && y * x + z == a * b) && y <= 2) && !(0 == y + 1)) && 0 <= y + 1) && z == 0) && b <= 5) && !(1 == b % 2)) || ((((((!(0 == y + 1) && z == a) && 0 <= y + 1) && y == (b + -1) / 2) && b <= 5) && 1 == b % 2) && x == 2 * a)) || ((((y == b && 1 <= b) && x == a) && z == 0) && b <= 5)) || (((((1 <= b && y * x + z == a * b) && y / 2 <= 1) && 1 == (y / 2 + 1) % 2) && 0 <= y) && b <= 5) RESULT: Ultimate proved your program to be correct! [2023-02-15 21:24:47,134 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