./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/lcm2_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f07dfd29134e87fb8840c55cea4fca74cbf39cfbb92d83a07db93f4706876200 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:41:52,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:41:52,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:41:52,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:41:52,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:41:52,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:41:52,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:41:52,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:41:52,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:41:52,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:41:52,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:41:52,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:41:52,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:41:52,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:41:52,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:41:52,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:41:52,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:41:52,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:41:52,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:41:52,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:41:52,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:41:52,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:41:52,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:41:52,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:41:52,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:41:52,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:41:52,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:41:52,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:41:52,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:41:52,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:41:52,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:41:52,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:41:52,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:41:52,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:41:52,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:41:52,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:41:52,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:41:52,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:41:52,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:41:52,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:41:52,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:41:52,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:41:52,573 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:41:52,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:41:52,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:41:52,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:41:52,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:41:52,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:41:52,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:41:52,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:41:52,576 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:41:52,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:41:52,576 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:41:52,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:41:52,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:41:52,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:41:52,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:41:52,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:41:52,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:41:52,578 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:41:52,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:41:52,578 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:41:52,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:41:52,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:41:52,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:41:52,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:41:52,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:41:52,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:41:52,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:41:52,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:41:52,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:41:52,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:41:52,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:41:52,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:41:52,581 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:41:52,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:41:52,581 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:41:52,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07dfd29134e87fb8840c55cea4fca74cbf39cfbb92d83a07db93f4706876200 [2023-02-16 02:41:52,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:41:52,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:41:52,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:41:52,847 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:41:52,847 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:41:52,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2023-02-16 02:41:53,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:41:54,009 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:41:54,010 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2023-02-16 02:41:54,014 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed167091e/b723f521c276468f81f55d2dda0fb134/FLAGfea03b686 [2023-02-16 02:41:54,028 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed167091e/b723f521c276468f81f55d2dda0fb134 [2023-02-16 02:41:54,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:41:54,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:41:54,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:41:54,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:41:54,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:41:54,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f6cf0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54, skipping insertion in model container [2023-02-16 02:41:54,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:41:54,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:41:54,162 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/lcm2_valuebound50.c[537,550] [2023-02-16 02:41:54,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:41:54,178 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:41:54,186 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/lcm2_valuebound50.c[537,550] [2023-02-16 02:41:54,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:41:54,198 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:41:54,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54 WrapperNode [2023-02-16 02:41:54,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:41:54,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:41:54,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:41:54,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:41:54,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,220 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-02-16 02:41:54,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:41:54,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:41:54,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:41:54,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:41:54,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:41:54,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:41:54,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:41:54,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:41:54,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (1/1) ... [2023-02-16 02:41:54,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:41:54,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:41:54,279 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) [2023-02-16 02:41:54,297 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 [2023-02-16 02:41:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:41:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:41:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:41:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:41:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:41:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:41:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:41:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:41:54,359 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:41:54,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:41:54,520 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:41:54,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:41:54,567 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:41:54,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:54 BoogieIcfgContainer [2023-02-16 02:41:54,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:41:54,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:41:54,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:41:54,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:41:54,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:41:54" (1/3) ... [2023-02-16 02:41:54,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:41:54, skipping insertion in model container [2023-02-16 02:41:54,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:54" (2/3) ... [2023-02-16 02:41:54,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:41:54, skipping insertion in model container [2023-02-16 02:41:54,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:54" (3/3) ... [2023-02-16 02:41:54,576 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound50.c [2023-02-16 02:41:54,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:41:54,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:41:54,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:41:54,639 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;@3d1e96ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:41:54,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:41:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:41:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 02:41:54,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:41:54,649 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:41:54,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:41:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:41:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 887431403, now seen corresponding path program 1 times [2023-02-16 02:41:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:41:54,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264609431] [2023-02-16 02:41:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:41:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:41:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:41:54,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264609431] [2023-02-16 02:41:54,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:41:54,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426185574] [2023-02-16 02:41:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:54,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:41:54,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:41:54,798 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) [2023-02-16 02:41:54,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:41:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:41:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:41:54,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:41:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-16 02:41:54,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:41:54,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426185574] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:41:54,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:41:54,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:41:54,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224364477] [2023-02-16 02:41:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:41:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:41:54,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:41:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:41:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:41:54,933 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:41:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:41:54,953 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2023-02-16 02:41:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:41:54,954 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-02-16 02:41:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:41:54,958 INFO L225 Difference]: With dead ends: 55 [2023-02-16 02:41:54,959 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 02:41:54,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:41:54,966 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2023-02-16 02:41:54,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:41:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 02:41:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-16 02:41:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:41:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-02-16 02:41:54,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 39 [2023-02-16 02:41:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:41:54,996 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-02-16 02:41:54,997 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:41:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-02-16 02:41:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 02:41:55,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:41:55,002 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:41:55,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 02:41:55,209 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 [2023-02-16 02:41:55,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:41:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:41:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -722599373, now seen corresponding path program 1 times [2023-02-16 02:41:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:41:55,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459661405] [2023-02-16 02:41:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:41:55,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:41:55,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133142341] [2023-02-16 02:41:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:55,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:41:55,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:41:55,231 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) [2023-02-16 02:41:55,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:41:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:41:55,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:41:55,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:41:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 02:41:55,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:41:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:41:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459661405] [2023-02-16 02:41:55,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:41:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133142341] [2023-02-16 02:41:55,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133142341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:41:55,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:41:55,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 02:41:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581559188] [2023-02-16 02:41:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:41:55,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:41:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:41:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:41:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:41:55,461 INFO L87 Difference]: Start difference. First operand 25 states and 32 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:41:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:41:55,608 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-02-16 02:41:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:41:55,609 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-16 02:41:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:41:55,614 INFO L225 Difference]: With dead ends: 38 [2023-02-16 02:41:55,614 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 02:41:55,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:41:55,615 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:41:55,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:41:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 02:41:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-16 02:41:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:41:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-16 02:41:55,631 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 39 [2023-02-16 02:41:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:41:55,632 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-16 02:41:55,632 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:41:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-16 02:41:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 02:41:55,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:41:55,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:41:55,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:41:55,839 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 [2023-02-16 02:41:55,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:41:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:41:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1459116230, now seen corresponding path program 1 times [2023-02-16 02:41:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:41:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906727673] [2023-02-16 02:41:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:41:55,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:41:55,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307047672] [2023-02-16 02:41:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:41:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:41:55,858 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) [2023-02-16 02:41:55,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:41:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-02-16 02:41:55,949 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-02-16 02:41:55,949 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-02-16 02:41:55,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:41:55,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:41:56,155 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 [2023-02-16 02:41:56,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-16 02:41:56,165 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:41:56,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:41:56 BoogieIcfgContainer [2023-02-16 02:41:56,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:41:56,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:41:56,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:41:56,176 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:41:56,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:54" (3/4) ... [2023-02-16 02:41:56,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-16 02:41:56,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:41:56,181 INFO L158 Benchmark]: Toolchain (without parser) took 2147.97ms. Allocated memory is still 151.0MB. Free memory was 117.4MB in the beginning and 118.7MB in the end (delta: -1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:41:56,185 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:41:56,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.60ms. Allocated memory is still 151.0MB. Free memory was 116.8MB in the beginning and 106.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:41:56,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.76ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:41:56,186 INFO L158 Benchmark]: Boogie Preprocessor took 28.35ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:41:56,187 INFO L158 Benchmark]: RCFGBuilder took 319.83ms. Allocated memory is still 151.0MB. Free memory was 103.9MB in the beginning and 119.5MB in the end (delta: -15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-16 02:41:56,188 INFO L158 Benchmark]: TraceAbstraction took 1603.70ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 119.0MB in the end (delta: -324.9kB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2023-02-16 02:41:56,188 INFO L158 Benchmark]: Witness Printer took 2.71ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 118.7MB in the end (delta: 309.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:41:56,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.60ms. Allocated memory is still 151.0MB. Free memory was 116.8MB in the beginning and 106.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.76ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.35ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.83ms. Allocated memory is still 151.0MB. Free memory was 103.9MB in the beginning and 119.5MB in the end (delta: -15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1603.70ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 119.0MB in the end (delta: -324.9kB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 2.71ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 118.7MB in the end (delta: 309.6kB). There was no memory consumed. 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 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned a, b; [L21] unsigned x, y, u, v; [L22] a = __VERIFIER_nondet_uint() [L23] CALL assume_abort_if_not(a>=0 && a<=50) [L9] COND FALSE !(!cond) [L23] RET assume_abort_if_not(a>=0 && a<=50) [L24] b = __VERIFIER_nondet_uint() [L25] CALL assume_abort_if_not(b>=0 && b<=50) [L9] COND FALSE !(!cond) [L25] RET assume_abort_if_not(b>=0 && b<=50) [L26] CALL assume_abort_if_not(a >= 1) [L9] COND FALSE !(!cond) [L26] RET assume_abort_if_not(a >= 1) [L27] CALL assume_abort_if_not(b >= 1) [L9] COND FALSE !(!cond) [L27] RET assume_abort_if_not(b >= 1) [L29] CALL assume_abort_if_not(a <= 65535) [L9] COND FALSE !(!cond) [L29] RET assume_abort_if_not(a <= 65535) [L30] CALL assume_abort_if_not(b <= 65535) [L9] COND FALSE !(!cond) [L30] RET assume_abort_if_not(b <= 65535) [L32] x = a [L33] y = b [L34] u = b [L35] v = a [L37] COND TRUE 1 [L38] CALL __VERIFIER_assert(x*u + y*v == 2*a*b) [L12] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert(x*u + y*v == 2*a*b) [L40] COND FALSE !(!(x != y)) [L43] COND TRUE x > y [L44] x = x - y [L45] v = v + u [L37] COND TRUE 1 [L38] CALL __VERIFIER_assert(x*u + y*v == 2*a*b) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 54 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 3 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 120/120 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-16 02:41:56,207 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/lcm2_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 f07dfd29134e87fb8840c55cea4fca74cbf39cfbb92d83a07db93f4706876200 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:41:57,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:41:57,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:41:57,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:41:57,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:41:57,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:41:57,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:41:57,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:41:57,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:41:57,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:41:57,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:41:57,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:41:57,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:41:57,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:41:57,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:41:57,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:41:57,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:41:57,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:41:57,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:41:57,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:41:57,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:41:57,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:41:57,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:41:57,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:41:57,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:41:57,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:41:57,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:41:57,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:41:57,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:41:57,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:41:57,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:41:57,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:41:57,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:41:57,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:41:57,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:41:57,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:41:57,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:41:57,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:41:57,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:41:57,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:41:57,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:41:57,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-16 02:41:57,930 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:41:57,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:41:57,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:41:57,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:41:57,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:41:57,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:41:57,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:41:57,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:41:57,933 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:41:57,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:41:57,934 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:41:57,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:41:57,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:41:57,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:41:57,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:41:57,936 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:41:57,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:41:57,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:41:57,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:41:57,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:41:57,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:41:57,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:41:57,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:41:57,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:41:57,937 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 02:41:57,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 02:41:57,938 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:41:57,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07dfd29134e87fb8840c55cea4fca74cbf39cfbb92d83a07db93f4706876200 [2023-02-16 02:41:58,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:41:58,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:41:58,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:41:58,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:41:58,235 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:41:58,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2023-02-16 02:41:59,268 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:41:59,411 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:41:59,412 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2023-02-16 02:41:59,415 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6a3a27e/79fb63249d324024af1d12cba25987f6/FLAGb314283a7 [2023-02-16 02:41:59,426 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6a3a27e/79fb63249d324024af1d12cba25987f6 [2023-02-16 02:41:59,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:41:59,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:41:59,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:41:59,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:41:59,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:41:59,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456374d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59, skipping insertion in model container [2023-02-16 02:41:59,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:41:59,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:41:59,546 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/lcm2_valuebound50.c[537,550] [2023-02-16 02:41:59,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:41:59,563 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:41:59,571 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/lcm2_valuebound50.c[537,550] [2023-02-16 02:41:59,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:41:59,588 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:41:59,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59 WrapperNode [2023-02-16 02:41:59,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:41:59,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:41:59,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:41:59,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:41:59,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,615 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-02-16 02:41:59,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:41:59,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:41:59,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:41:59,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:41:59,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,631 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:41:59,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:41:59,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:41:59,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:41:59,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (1/1) ... [2023-02-16 02:41:59,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:41:59,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:41:59,664 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) [2023-02-16 02:41:59,672 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 [2023-02-16 02:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-16 02:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:41:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:41:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:41:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:41:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:41:59,744 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:41:59,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:41:59,904 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:41:59,908 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:41:59,908 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:41:59,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:59 BoogieIcfgContainer [2023-02-16 02:41:59,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:41:59,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:41:59,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:41:59,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:41:59,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:41:59" (1/3) ... [2023-02-16 02:41:59,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f817253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:41:59, skipping insertion in model container [2023-02-16 02:41:59,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:41:59" (2/3) ... [2023-02-16 02:41:59,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f817253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:41:59, skipping insertion in model container [2023-02-16 02:41:59,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:59" (3/3) ... [2023-02-16 02:41:59,915 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound50.c [2023-02-16 02:41:59,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:41:59,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:41:59,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:41:59,959 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;@1df5c17f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:41:59,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:41:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:41:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 02:41:59,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:41:59,967 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:41:59,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:41:59,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:41:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 887431403, now seen corresponding path program 1 times [2023-02-16 02:41:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:41:59,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080697672] [2023-02-16 02:41:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:41:59,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:41:59,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:41:59,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:41:59,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-16 02:42:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:00,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:42:00,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-16 02:42:00,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:42:00,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:42:00,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080697672] [2023-02-16 02:42:00,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080697672] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:42:00,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:42:00,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:42:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939531228] [2023-02-16 02:42:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:42:00,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:42:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:42:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:42:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:42:00,159 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:42:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:00,174 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2023-02-16 02:42:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:42:00,176 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-16 02:42:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:00,191 INFO L225 Difference]: With dead ends: 55 [2023-02-16 02:42:00,191 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 02:42:00,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:42:00,195 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2023-02-16 02:42:00,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:42:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 02:42:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-16 02:42:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:42:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-02-16 02:42:00,218 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 39 [2023-02-16 02:42:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:00,218 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-02-16 02:42:00,218 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:42:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-02-16 02:42:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 02:42:00,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:00,220 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:00,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:00,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:00,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash -722599373, now seen corresponding path program 1 times [2023-02-16 02:42:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:42:00,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192928238] [2023-02-16 02:42:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:00,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:00,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:42:00,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:42:00,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-16 02:42:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:01,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:42:01,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 02:42:01,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-16 02:42:02,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:42:02,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192928238] [2023-02-16 02:42:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192928238] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:42:02,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:42:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-02-16 02:42:02,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992263985] [2023-02-16 02:42:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:42:02,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:42:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:42:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:42:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:42:02,204 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:42:05,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:07,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:07,253 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2023-02-16 02:42:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:42:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-16 02:42:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:07,260 INFO L225 Difference]: With dead ends: 36 [2023-02-16 02:42:07,260 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 02:42:07,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:42:07,262 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:07,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-02-16 02:42:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 02:42:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-02-16 02:42:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:42:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-16 02:42:07,280 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 39 [2023-02-16 02:42:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:07,284 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-16 02:42:07,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 02:42:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-16 02:42:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 02:42:07,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:07,288 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:07,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:07,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1459116230, now seen corresponding path program 1 times [2023-02-16 02:42:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:42:07,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948212643] [2023-02-16 02:42:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:42:07,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:42:07,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-16 02:42:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:08,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 02:42:08,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 02:42:08,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-16 02:42:12,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:42:12,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948212643] [2023-02-16 02:42:12,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948212643] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:12,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:12,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2023-02-16 02:42:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944391731] [2023-02-16 02:42:12,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-16 02:42:12,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:42:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-16 02:42:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-16 02:42:12,555 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-16 02:42:23,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:23,448 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-02-16 02:42:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 02:42:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 47 [2023-02-16 02:42:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:23,457 INFO L225 Difference]: With dead ends: 48 [2023-02-16 02:42:23,457 INFO L226 Difference]: Without dead ends: 44 [2023-02-16 02:42:23,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:42:23,458 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:23,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 104 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2023-02-16 02:42:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-16 02:42:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-02-16 02:42:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 02:42:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-02-16 02:42:23,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 47 [2023-02-16 02:42:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:23,476 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-02-16 02:42:23,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-16 02:42:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-02-16 02:42:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-16 02:42:23,478 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:23,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2023-02-16 02:42:23,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:23,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:23,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 381530325, now seen corresponding path program 1 times [2023-02-16 02:42:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:42:23,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967453904] [2023-02-16 02:42:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:23,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:42:23,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:42:23,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-16 02:42:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-16 02:42:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 02:42:25,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-16 02:42:33,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:42:33,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967453904] [2023-02-16 02:42:33,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967453904] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:33,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:33,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2023-02-16 02:42:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098257541] [2023-02-16 02:42:33,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 02:42:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:42:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 02:42:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-02-16 02:42:33,369 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-16 02:42:42,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:44,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:46,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:42:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:47,533 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-02-16 02:42:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 02:42:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 55 [2023-02-16 02:42:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:47,535 INFO L225 Difference]: With dead ends: 58 [2023-02-16 02:42:47,535 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 02:42:47,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-02-16 02:42:47,536 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:47,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 116 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 387 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2023-02-16 02:42:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 02:42:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 02:42:47,537 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) [2023-02-16 02:42:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 02:42:47,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2023-02-16 02:42:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:47,538 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 02:42:47,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-16 02:42:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 02:42:47,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 02:42:47,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:42:47,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:47,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:42:47,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 02:42:58,379 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 02:42:58,379 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-02-16 02:42:58,379 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-02-16 02:42:58,380 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) [2023-02-16 02:42:58,380 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32))) [2023-02-16 02:42:58,380 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-02-16 02:42:58,380 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-02-16 02:42:58,380 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-02-16 02:42:58,380 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 02:42:58,380 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 57) the Hoare annotation is: true [2023-02-16 02:42:58,381 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) (bvmul (_ bv2 32) (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|))) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-02-16 02:42:58,381 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2023-02-16 02:42:58,381 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 02:42:58,381 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-02-16 02:42:58,381 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 02:42:58,381 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32))) [2023-02-16 02:42:58,381 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2023-02-16 02:42:58,381 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) (bvmul (_ bv2 32) (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|))) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv50 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-02-16 02:42:58,382 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) (bvmul (_ bv2 32) (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|))) [2023-02-16 02:42:58,382 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-16 02:42:58,382 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-16 02:42:58,383 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-16 02:42:58,383 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-16 02:42:58,383 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-16 02:42:58,385 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-16 02:42:58,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:42:58,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:42:58 BoogieIcfgContainer [2023-02-16 02:42:58,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:42:58,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:42:58,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:42:58,395 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:42:58,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:41:59" (3/4) ... [2023-02-16 02:42:58,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 02:42:58,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-16 02:42:58,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 02:42:58,404 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-02-16 02:42:58,404 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-02-16 02:42:58,404 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-16 02:42:58,404 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:42:58,404 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:42:58,425 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:42:58,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:42:58,426 INFO L158 Benchmark]: Toolchain (without parser) took 58996.67ms. Allocated memory is still 104.9MB. Free memory was 82.5MB in the beginning and 37.1MB in the end (delta: 45.4MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,426 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:42:58,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.08ms. Allocated memory is still 104.9MB. Free memory was 82.5MB in the beginning and 71.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.79ms. Allocated memory is still 104.9MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,427 INFO L158 Benchmark]: Boogie Preprocessor took 17.45ms. Allocated memory is still 104.9MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:42:58,427 INFO L158 Benchmark]: RCFGBuilder took 276.05ms. Allocated memory is still 104.9MB. Free memory was 68.7MB in the beginning and 56.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,427 INFO L158 Benchmark]: TraceAbstraction took 58483.46ms. Allocated memory is still 104.9MB. Free memory was 56.5MB in the beginning and 40.1MB in the end (delta: 16.4MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,427 INFO L158 Benchmark]: Witness Printer took 30.40ms. Allocated memory is still 104.9MB. Free memory was 40.1MB in the beginning and 37.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:42:58,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.08ms. Allocated memory is still 104.9MB. Free memory was 82.5MB in the beginning and 71.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.79ms. Allocated memory is still 104.9MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.45ms. Allocated memory is still 104.9MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.05ms. Allocated memory is still 104.9MB. Free memory was 68.7MB in the beginning and 56.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 58483.46ms. Allocated memory is still 104.9MB. Free memory was 56.5MB in the beginning and 40.1MB in the end (delta: 16.4MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 30.40ms. Allocated memory is still 104.9MB. Free memory was 40.1MB in the beginning and 37.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.4s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 25.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 344 SdHoareTripleChecker+Invalid, 24.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 246 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 756 IncrementalHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 98 mSDtfsCounter, 756 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 33 PreInvPairs, 52 NumberOfFragments, 115 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 434 FormulaSimplificationTreeSizeReductionInter, 10.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 314 ConstructedInterpolants, 0 QuantifiedInterpolants, 1346 SizeOfPredicates, 21 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 373/460 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((~bvule32(a, 50bv32) && ~bvuge32(a, 1bv32)) && ~bvadd128(~bvmul32(y, v), ~bvmul32(u, x)) == ~bvmul32(2bv32, ~bvmul32(b, a))) && ~bvule32(b, 50bv32)) && ~bvuge32(b, 1bv32) RESULT: Ultimate proved your program to be correct! [2023-02-16 02:42:58,460 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