./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 01:09:18,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:09:18,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:09:18,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:09:18,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:09:18,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:09:18,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:09:18,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:09:18,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:09:18,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:09:18,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:09:19,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:09:19,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:09:19,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:09:19,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:09:19,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:09:19,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:09:19,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:09:19,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:09:19,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:09:19,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:09:19,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:09:19,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:09:19,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:09:19,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:09:19,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:09:19,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:09:19,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:09:19,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:09:19,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:09:19,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:09:19,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:09:19,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:09:19,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:09:19,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:09:19,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:09:19,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:09:19,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:09:19,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:09:19,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:09:19,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:09:19,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:09:19,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:09:19,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:09:19,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:09:19,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:09:19,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:09:19,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:09:19,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:09:19,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:09:19,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:09:19,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:09:19,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:09:19,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:09:19,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:09:19,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:09:19,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:09:19,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:09:19,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:09:19,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:09:19,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:09:19,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:09:19,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:09:19,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:09:19,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:09:19,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:09:19,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:09:19,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:09:19,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:09:19,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:09:19,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:09:19,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-20 01:09:19,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:09:19,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:09:19,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:09:19,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:09:19,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:09:19,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-10-20 01:09:19,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ee16ce4/ab4dcf7ee8394abebeec0d694cd74358/FLAGee1f7a1a5 [2020-10-20 01:09:19,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:09:19,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-10-20 01:09:19,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ee16ce4/ab4dcf7ee8394abebeec0d694cd74358/FLAGee1f7a1a5 [2020-10-20 01:09:20,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ee16ce4/ab4dcf7ee8394abebeec0d694cd74358 [2020-10-20 01:09:20,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:09:20,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:09:20,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:09:20,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:09:20,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:09:20,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e115949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20, skipping insertion in model container [2020-10-20 01:09:20,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:09:20,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:09:20,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:09:20,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:09:20,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:09:20,801 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:09:20,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20 WrapperNode [2020-10-20 01:09:20,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:09:20,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:09:20,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:09:20,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:09:20,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:09:20,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:09:20,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:09:20,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:09:20,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (1/1) ... [2020-10-20 01:09:20,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:09:20,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:09:20,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:09:20,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:09:20,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (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 [2020-10-20 01:09:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:09:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:09:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:09:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:09:21,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:09:21,159 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 01:09:21,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:21 BoogieIcfgContainer [2020-10-20 01:09:21,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:09:21,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:09:21,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:09:21,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:09:21,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:09:20" (1/3) ... [2020-10-20 01:09:21,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5d98d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:09:21, skipping insertion in model container [2020-10-20 01:09:21,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:20" (2/3) ... [2020-10-20 01:09:21,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5d98d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:09:21, skipping insertion in model container [2020-10-20 01:09:21,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:21" (3/3) ... [2020-10-20 01:09:21,197 INFO L111 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-b.c [2020-10-20 01:09:21,213 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:09:21,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 01:09:21,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 01:09:21,284 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:09:21,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:09:21,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:09:21,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:09:21,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:09:21,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:09:21,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:09:21,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:09:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 01:09:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 01:09:21,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:21,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 01:09:21,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:21,321 INFO L82 PathProgramCache]: Analyzing trace with hash 889577263, now seen corresponding path program 1 times [2020-10-20 01:09:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:21,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078249334] [2020-10-20 01:09:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:21,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078249334] [2020-10-20 01:09:21,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:09:21,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:09:21,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522682608] [2020-10-20 01:09:21,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:09:21,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:09:21,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:09:21,496 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 01:09:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:21,513 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-10-20 01:09:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:09:21,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 01:09:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:21,525 INFO L225 Difference]: With dead ends: 22 [2020-10-20 01:09:21,525 INFO L226 Difference]: Without dead ends: 7 [2020-10-20 01:09:21,529 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 [2020-10-20 01:09:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-20 01:09:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 01:09:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 01:09:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-10-20 01:09:21,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2020-10-20 01:09:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:21,557 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-10-20 01:09:21,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:09:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-10-20 01:09:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 01:09:21,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:21,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 01:09:21,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:09:21,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash 889573419, now seen corresponding path program 1 times [2020-10-20 01:09:21,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:21,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123156420] [2020-10-20 01:09:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:21,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123156420] [2020-10-20 01:09:21,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:09:21,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:09:21,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650829214] [2020-10-20 01:09:21,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:09:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:09:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:09:21,663 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2020-10-20 01:09:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:21,679 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-20 01:09:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:09:21,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 01:09:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:21,683 INFO L225 Difference]: With dead ends: 11 [2020-10-20 01:09:21,683 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 01:09:21,684 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 [2020-10-20 01:09:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 01:09:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 01:09:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 01:09:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-20 01:09:21,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-20 01:09:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:21,689 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-20 01:09:21,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:09:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-20 01:09:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 01:09:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:21,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:09:21,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:09:21,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1807024099, now seen corresponding path program 1 times [2020-10-20 01:09:21,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:21,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033583213] [2020-10-20 01:09:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033583213] [2020-10-20 01:09:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221043746] [2020-10-20 01:09:21,808 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 [2020-10-20 01:09:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:21,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 01:09:21,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:21,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:21,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 01:09:21,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848116493] [2020-10-20 01:09:21,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:09:21,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:21,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:09:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:09:21,929 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-10-20 01:09:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:21,964 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-20 01:09:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:09:21,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 01:09:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:21,966 INFO L225 Difference]: With dead ends: 12 [2020-10-20 01:09:21,966 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 01:09:21,967 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 [2020-10-20 01:09:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 01:09:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 01:09:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 01:09:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 01:09:21,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-20 01:09:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:21,972 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 01:09:21,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:09:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 01:09:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 01:09:21,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:21,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 01:09:22,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 01:09:22,183 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 183224107, now seen corresponding path program 2 times [2020-10-20 01:09:22,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:22,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755764334] [2020-10-20 01:09:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:09:22,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:09:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:09:22,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:09:22,305 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:09:22,305 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:09:22,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:09:22,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:09:22 BoogieIcfgContainer [2020-10-20 01:09:22,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:09:22,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:09:22,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:09:22,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:09:22,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:21" (3/4) ... [2020-10-20 01:09:22,352 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:09:22,435 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:09:22,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:09:22,439 INFO L168 Benchmark]: Toolchain (without parser) took 2116.24 ms. Allocated memory was 35.1 MB in the beginning and 48.8 MB in the end (delta: 13.6 MB). Free memory was 12.7 MB in the beginning and 23.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,441 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.7 MB in the end (delta: 65.4 kB). Peak memory consumption was 34.2 kB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.78 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.8 MB in the beginning and 25.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,444 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 ms. Allocated memory is still 44.0 MB. Free memory was 23.3 MB in the beginning and 22.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,449 INFO L168 Benchmark]: RCFGBuilder took 306.75 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 22.1 MB in the beginning and 22.3 MB in the end (delta: -148.2 kB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,450 INFO L168 Benchmark]: TraceAbstraction took 1167.96 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 21.6 MB in the beginning and 25.9 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:09:22,451 INFO L168 Benchmark]: Witness Printer took 87.82 ms. Allocated memory is still 48.8 MB. Free memory was 25.9 MB in the beginning and 23.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:22,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.7 MB in the end (delta: 65.4 kB). Peak memory consumption was 34.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 471.78 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.8 MB in the beginning and 25.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.27 ms. Allocated memory is still 44.0 MB. Free memory was 23.3 MB in the beginning and 22.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 306.75 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 22.1 MB in the beginning and 22.3 MB in the end (delta: -148.2 kB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1167.96 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 21.6 MB in the beginning and 25.9 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 87.82 ms. Allocated memory is still 48.8 MB. Free memory was 25.9 MB in the beginning and 23.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 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: 1.0s, 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, 0.0s 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, 0.2s 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...