./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/loop-invariants/linear-inequality-inv-b.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 6b7e4344a1b47d68a491e369e16c1769051091e9 ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:31:04,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:31:04,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:31:04,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:31:04,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:31:04,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:31:04,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:31:04,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:31:04,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:31:04,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:31:04,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:31:04,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:31:04,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:31:04,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:31:04,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:31:04,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:31:04,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:31:04,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:31:04,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:31:04,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:31:04,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:31:04,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:31:04,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:31:04,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:31:04,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:31:04,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:31:04,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:31:04,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:31:04,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:31:04,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:31:04,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:31:04,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:31:04,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:31:04,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:31:04,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:31:04,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:31:04,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:31:04,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:31:04,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:31:04,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:31:04,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:31:04,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:31:04,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:31:04,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:31:04,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:31:04,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:31:04,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:31:04,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:31:04,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:31:04,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:31:04,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:31:04,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:31:04,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:31:04,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:31:04,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:31:04,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:31:04,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:31:04,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:31:04,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:31:04,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:31:04,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:31:04,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:31:04,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:31:04,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:31:04,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:31:04,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:31:04,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:31:04,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:31:04,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:31:04,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:31:04,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:31:04,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b7e4344a1b47d68a491e369e16c1769051091e9 [2020-10-25 22:31:04,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:31:04,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:31:04,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:31:04,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:31:04,992 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:31:04,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-10-25 22:31:05,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47030217/8894e6680a35492092c5e740ac38e73b/FLAGa999d9d0a [2020-10-25 22:31:05,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:31:05,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-10-25 22:31:05,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47030217/8894e6680a35492092c5e740ac38e73b/FLAGa999d9d0a [2020-10-25 22:31:05,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47030217/8894e6680a35492092c5e740ac38e73b [2020-10-25 22:31:05,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:31:05,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:31:05,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:31:05,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:31:06,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:31:06,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:31:05" (1/1) ... [2020-10-25 22:31:06,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cadca39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06, skipping insertion in model container [2020-10-25 22:31:06,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:31:05" (1/1) ... [2020-10-25 22:31:06,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:31:06,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:31:06,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:31:06,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:31:06,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:31:06,324 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:31:06,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06 WrapperNode [2020-10-25 22:31:06,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:31:06,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:31:06,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:31:06,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:31:06,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:31:06,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:31:06,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:31:06,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:31:06,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... [2020-10-25 22:31:06,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:31:06,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:31:06,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:31:06,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:31:06,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:31:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:31:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:31:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:31:06,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:31:06,714 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:31:06,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:06 BoogieIcfgContainer [2020-10-25 22:31:06,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:31:06,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:31:06,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:31:06,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:31:06,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:31:05" (1/3) ... [2020-10-25 22:31:06,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c36347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:31:06, skipping insertion in model container [2020-10-25 22:31:06,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:06" (2/3) ... [2020-10-25 22:31:06,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c36347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:31:06, skipping insertion in model container [2020-10-25 22:31:06,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:06" (3/3) ... [2020-10-25 22:31:06,726 INFO L111 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-b.c [2020-10-25 22:31:06,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:31:06,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-25 22:31:06,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-25 22:31:06,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:31:06,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:31:06,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:31:06,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:31:06,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:31:06,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:31:06,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:31:06,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:31:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-25 22:31:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:31:06,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:06,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:31:06,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:06,824 INFO L82 PathProgramCache]: Analyzing trace with hash 889577263, now seen corresponding path program 1 times [2020-10-25 22:31:06,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:06,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941190137] [2020-10-25 22:31:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:07,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941190137] [2020-10-25 22:31:07,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:31:07,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:31:07,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860485161] [2020-10-25 22:31:07,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:31:07,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:31:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:31:07,104 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-25 22:31:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:07,126 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-10-25 22:31:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:31:07,128 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 22:31:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:07,138 INFO L225 Difference]: With dead ends: 22 [2020-10-25 22:31:07,139 INFO L226 Difference]: Without dead ends: 7 [2020-10-25 22:31:07,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:31:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-25 22:31:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-25 22:31:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-25 22:31:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-10-25 22:31:07,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2020-10-25 22:31:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:07,178 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-10-25 22:31:07,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:31:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-10-25 22:31:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:31:07,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:07,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:31:07,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:31:07,180 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:07,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:07,181 INFO L82 PathProgramCache]: Analyzing trace with hash 889573419, now seen corresponding path program 1 times [2020-10-25 22:31:07,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:07,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234155623] [2020-10-25 22:31:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:07,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234155623] [2020-10-25 22:31:07,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:31:07,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:31:07,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226907594] [2020-10-25 22:31:07,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:31:07,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:07,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:31:07,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:31:07,370 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2020-10-25 22:31:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:07,400 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-25 22:31:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:31:07,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-25 22:31:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:07,402 INFO L225 Difference]: With dead ends: 11 [2020-10-25 22:31:07,402 INFO L226 Difference]: Without dead ends: 8 [2020-10-25 22:31:07,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:31:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-25 22:31:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-25 22:31:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-25 22:31:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-25 22:31:07,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-25 22:31:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:07,409 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-25 22:31:07,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:31:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-25 22:31:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:31:07,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:07,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:31:07,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:31:07,412 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1807024099, now seen corresponding path program 1 times [2020-10-25 22:31:07,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:07,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471289679] [2020-10-25 22:31:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:07,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471289679] [2020-10-25 22:31:07,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544053060] [2020-10-25 22:31:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:31:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 22:31:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:31:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:07,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:31:07,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:31:07,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790646930] [2020-10-25 22:31:07,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:31:07,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:07,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:31:07,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:31:07,690 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-10-25 22:31:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:07,729 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-25 22:31:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:31:07,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-25 22:31:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:07,731 INFO L225 Difference]: With dead ends: 12 [2020-10-25 22:31:07,731 INFO L226 Difference]: Without dead ends: 9 [2020-10-25 22:31:07,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:31:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-25 22:31:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-25 22:31:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-25 22:31:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-25 22:31:07,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-25 22:31:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:07,736 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-25 22:31:07,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:31:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-25 22:31:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:31:07,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:07,738 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-25 22:31:07,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 22:31:07,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 183224107, now seen corresponding path program 2 times [2020-10-25 22:31:07,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:07,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303223091] [2020-10-25 22:31:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:31:07,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:31:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:31:08,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:31:08,044 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:31:08,044 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:31:08,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:31:08,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:31:08 BoogieIcfgContainer [2020-10-25 22:31:08,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:31:08,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:31:08,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:31:08,070 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:31:08,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:06" (3/4) ... [2020-10-25 22:31:08,073 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:31:08,118 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:31:08,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:31:08,121 INFO L168 Benchmark]: Toolchain (without parser) took 2132.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 35.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,122 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:31:08,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.75 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 37.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.19 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:31:08,124 INFO L168 Benchmark]: Boogie Preprocessor took 40.02 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 34.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,124 INFO L168 Benchmark]: RCFGBuilder took 304.86 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 37.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,125 INFO L168 Benchmark]: TraceAbstraction took 1351.43 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 37.3 MB in the end (delta: -197.4 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,126 INFO L168 Benchmark]: Witness Printer took 49.14 ms. Allocated memory is still 69.2 MB. Free memory was 37.3 MB in the beginning and 35.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:08,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.75 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 37.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.19 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.02 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 34.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 304.86 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 37.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1351.43 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 37.3 MB in the end (delta: -197.4 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 49.14 ms. Allocated memory is still 69.2 MB. Free memory was 37.3 MB in the beginning and 35.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 2]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L5] unsigned char n = __VERIFIER_nondet_uchar(); [L6] COND FALSE !(n == 0) [L9] unsigned char v = 0; [L10] unsigned char s = 0; [L11] unsigned int i = 0; [L12] COND TRUE i < n [L13] v = __VERIFIER_nondet_uchar() [L14] s += v [L15] ++i [L12] COND TRUE i < n [L13] v = __VERIFIER_nondet_uchar() [L14] s += v [L15] ++i [L12] COND FALSE !(i < n) [L17] COND TRUE s < v [L2] __assert_fail("0", "linear-inequality-inv-b.c", 2, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 412 SizeOfPredicates, 2 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 proved your program to be incorrect! Received shutdown request...