./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-loops/diamond_2-1.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/bitvector-loops/diamond_2-1.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 fdc3c556d58a22f0b5db1f711cca081eb180f3b4 ..................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-10-19 22:22:57,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:57,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:57,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:57,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:57,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:57,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:57,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:57,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:57,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:57,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:57,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:57,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:57,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:57,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:57,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:57,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:57,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:57,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:57,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:57,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:57,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:57,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:57,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:57,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:57,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:57,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:57,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:57,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:57,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:57,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:57,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:57,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:57,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:57,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:57,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:57,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:57,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:57,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:57,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:57,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:57,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:57,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:57,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:57,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:57,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:57,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:57,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:57,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:57,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:57,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:57,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:57,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:57,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:57,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:57,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:57,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:57,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:57,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:57,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:57,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:57,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:57,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:57,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:57,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:57,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:57,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:57,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:57,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:57,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:57,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:57,216 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 -> fdc3c556d58a22f0b5db1f711cca081eb180f3b4 [2020-10-19 22:22:57,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:57,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:57,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:57,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:57,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:57,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2020-10-19 22:22:57,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5850de60b/8dec54f291c9466493f0bf051931b9ea/FLAG1b6551ec1 [2020-10-19 22:22:58,009 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:58,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2020-10-19 22:22:58,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5850de60b/8dec54f291c9466493f0bf051931b9ea/FLAG1b6551ec1 [2020-10-19 22:22:58,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5850de60b/8dec54f291c9466493f0bf051931b9ea [2020-10-19 22:22:58,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:58,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:58,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:58,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:58,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:58,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d34d80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58, skipping insertion in model container [2020-10-19 22:22:58,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:58,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:58,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:58,563 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:58,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:58,610 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58 WrapperNode [2020-10-19 22:22:58,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:58,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:58,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:58,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:58,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:58,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:58,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:58,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:58,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (1/1) ... [2020-10-19 22:22:58,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:58,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:58,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:58,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:58,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (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 [2020-10-19 22:22:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:58,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:59,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:59,095 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:22:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:59 BoogieIcfgContainer [2020-10-19 22:22:59,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:59,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:59,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:59,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:59,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:58" (1/3) ... [2020-10-19 22:22:59,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1de91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:59, skipping insertion in model container [2020-10-19 22:22:59,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:58" (2/3) ... [2020-10-19 22:22:59,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1de91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:59, skipping insertion in model container [2020-10-19 22:22:59,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:59" (3/3) ... [2020-10-19 22:22:59,125 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-10-19 22:22:59,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:59,144 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:22:59,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:22:59,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:59,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:59,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:59,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:59,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:59,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:59,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:59,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-19 22:22:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:22:59,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:59,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:22:59,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2020-10-19 22:22:59,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:59,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170572596] [2020-10-19 22:22:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:59,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170572596] [2020-10-19 22:22:59,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:59,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:22:59,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992213018] [2020-10-19 22:22:59,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:22:59,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:59,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:22:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:22:59,356 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-19 22:22:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:59,381 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-10-19 22:22:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:22:59,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-19 22:22:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:59,393 INFO L225 Difference]: With dead ends: 28 [2020-10-19 22:22:59,393 INFO L226 Difference]: Without dead ends: 17 [2020-10-19 22:22:59,396 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 [2020-10-19 22:22:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-19 22:22:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-19 22:22:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 22:22:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2020-10-19 22:22:59,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2020-10-19 22:22:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:59,430 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-10-19 22:22:59,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:22:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2020-10-19 22:22:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:22:59,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:59,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:22:59,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:59,431 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2020-10-19 22:22:59,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:59,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475092661] [2020-10-19 22:22:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:59,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475092661] [2020-10-19 22:22:59,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:59,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189491505] [2020-10-19 22:22:59,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:59,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:59,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:59,528 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2020-10-19 22:22:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:59,599 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2020-10-19 22:22:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:59,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 22:22:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:59,603 INFO L225 Difference]: With dead ends: 23 [2020-10-19 22:22:59,603 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:22:59,604 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 [2020-10-19 22:22:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:22:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-19 22:22:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 22:22:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2020-10-19 22:22:59,610 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2020-10-19 22:22:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:59,611 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-10-19 22:22:59,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2020-10-19 22:22:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:22:59,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:59,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:59,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:59,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2020-10-19 22:22:59,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:59,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818553872] [2020-10-19 22:22:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:59,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818553872] [2020-10-19 22:22:59,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:59,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:59,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73627858] [2020-10-19 22:22:59,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:59,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:59,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:59,675 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand 3 states. [2020-10-19 22:22:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:59,781 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2020-10-19 22:22:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:59,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:22:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:59,783 INFO L225 Difference]: With dead ends: 48 [2020-10-19 22:22:59,783 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 22:22:59,784 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 [2020-10-19 22:22:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 22:22:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-19 22:22:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 22:22:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-19 22:22:59,791 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2020-10-19 22:22:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:59,791 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-19 22:22:59,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-19 22:22:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:22:59,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:59,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:59,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:59,794 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2020-10-19 22:22:59,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:59,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293426022] [2020-10-19 22:22:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:59,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:59,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:59,954 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:22:59,954 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:59,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:23:00,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:23:00 BoogieIcfgContainer [2020-10-19 22:23:00,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:23:00,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:23:00,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:23:00,016 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:23:00,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:59" (3/4) ... [2020-10-19 22:23:00,019 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:23:00,100 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:23:00,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:23:00,103 INFO L168 Benchmark]: Toolchain (without parser) took 1782.99 ms. Allocated memory was 42.5 MB in the beginning and 48.2 MB in the end (delta: 5.8 MB). Free memory was 23.1 MB in the beginning and 12.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,104 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.39 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.2 MB in the beginning and 24.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 43.0 MB. Free memory was 24.2 MB in the beginning and 22.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,106 INFO L168 Benchmark]: Boogie Preprocessor took 32.99 ms. Allocated memory is still 43.0 MB. Free memory was 22.3 MB in the beginning and 20.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,107 INFO L168 Benchmark]: RCFGBuilder took 408.23 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.7 MB in the beginning and 23.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,108 INFO L168 Benchmark]: TraceAbstraction took 915.78 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 22.9 MB in the beginning and 14.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,109 INFO L168 Benchmark]: Witness Printer took 85.23 ms. Allocated memory is still 48.2 MB. Free memory was 14.9 MB in the beginning and 12.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:00,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 284.39 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.2 MB in the beginning and 24.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 43.0 MB. Free memory was 24.2 MB in the beginning and 22.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.99 ms. Allocated memory is still 43.0 MB. Free memory was 22.3 MB in the beginning and 20.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 408.23 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.7 MB in the beginning and 23.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 915.78 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 22.9 MB in the beginning and 14.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Witness Printer took 85.23 ms. Allocated memory is still 48.2 MB. Free memory was 14.9 MB in the beginning and 12.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 [L17] COND FALSE !(x < 99) [L7] COND TRUE !(cond) [L3] __assert_fail("0", "diamond_2-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 15 SDslu, 8 SDs, 0 SdLazy, 49 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...