./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 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/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 0.2.0-5485861 [2020-10-25 19:37:09,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:37:09,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:37:09,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:37:09,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:37:09,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:37:09,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:37:09,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:37:09,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:37:09,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:37:09,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:37:09,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:37:09,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:37:09,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:37:09,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:37:09,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:37:09,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:37:09,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:37:09,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:37:09,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:37:09,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:37:09,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:37:09,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:37:09,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:37:09,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:37:09,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:37:09,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:37:09,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:37:09,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:37:09,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:37:09,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:37:09,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:37:09,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:37:09,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:37:09,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:37:09,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:37:09,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:37:09,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:37:09,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:37:09,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:37:09,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:37:09,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:37:09,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:37:09,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:37:09,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:37:09,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:37:09,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:37:09,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:37:09,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:37:09,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:37:09,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:37:09,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:37:09,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:37:09,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:37:09,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:37:09,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:37:09,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:37:09,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:37:09,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:37:09,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:37:09,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:37:09,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:37:09,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:37:09,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:37:09,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:37:09,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:37:09,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:37:09,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:37:09,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:37:09,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:37:09,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:37:09,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc3c556d58a22f0b5db1f711cca081eb180f3b4 [2020-10-25 19:37:09,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:37:09,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:37:09,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:37:09,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:37:09,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:37:09,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2020-10-25 19:37:09,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89fad1182/2de46d3f851447b4a11c609871b6b81c/FLAG4cff93610 [2020-10-25 19:37:10,599 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:37:10,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2020-10-25 19:37:10,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89fad1182/2de46d3f851447b4a11c609871b6b81c/FLAG4cff93610 [2020-10-25 19:37:10,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89fad1182/2de46d3f851447b4a11c609871b6b81c [2020-10-25 19:37:10,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:37:10,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:37:10,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:37:10,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:37:10,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:37:10,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:37:10" (1/1) ... [2020-10-25 19:37:10,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4478fd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:10, skipping insertion in model container [2020-10-25 19:37:10,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:37:10" (1/1) ... [2020-10-25 19:37:10,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:37:10,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:37:11,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:37:11,208 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:37:11,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:37:11,253 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:37:11,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11 WrapperNode [2020-10-25 19:37:11,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:37:11,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:37:11,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:37:11,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:37:11,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:37:11,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:37:11,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:37:11,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:37:11,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (1/1) ... [2020-10-25 19:37:11,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:37:11,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:37:11,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:37:11,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:37:11,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (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 19:37:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:37:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:37:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:37:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:37:11,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:37:11,762 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 19:37:11,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:37:11 BoogieIcfgContainer [2020-10-25 19:37:11,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:37:11,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:37:11,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:37:11,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:37:11,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:37:10" (1/3) ... [2020-10-25 19:37:11,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f711901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:37:11, skipping insertion in model container [2020-10-25 19:37:11,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:37:11" (2/3) ... [2020-10-25 19:37:11,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f711901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:37:11, skipping insertion in model container [2020-10-25 19:37:11,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:37:11" (3/3) ... [2020-10-25 19:37:11,776 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-10-25 19:37:11,790 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:37:11,796 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:37:11,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:37:11,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:37:11,842 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:37:11,842 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:37:11,842 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:37:11,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:37:11,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:37:11,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:37:11,843 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:37:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-25 19:37:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 19:37:11,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:11,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 19:37:11,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2020-10-25 19:37:11,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:37:11,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846971655] [2020-10-25 19:37:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:37:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:12,075 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 19:37:12,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846971655] [2020-10-25 19:37:12,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:12,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:37:12,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447164452] [2020-10-25 19:37:12,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:37:12,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:37:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:37:12,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:37:12,114 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-25 19:37:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:12,136 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-10-25 19:37:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:37:12,138 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 19:37:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:12,152 INFO L225 Difference]: With dead ends: 28 [2020-10-25 19:37:12,152 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 19:37:12,158 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 19:37:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 19:37:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-25 19:37:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-25 19:37:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2020-10-25 19:37:12,207 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2020-10-25 19:37:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:12,208 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-10-25 19:37:12,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:37:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2020-10-25 19:37:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 19:37:12,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:12,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 19:37:12,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:37:12,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2020-10-25 19:37:12,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:37:12,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458494841] [2020-10-25 19:37:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:37:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:12,277 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 19:37:12,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458494841] [2020-10-25 19:37:12,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:12,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:37:12,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477650264] [2020-10-25 19:37:12,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:37:12,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:37:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:37:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:37:12,282 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2020-10-25 19:37:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:12,396 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2020-10-25 19:37:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:37:12,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-25 19:37:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:12,400 INFO L225 Difference]: With dead ends: 23 [2020-10-25 19:37:12,400 INFO L226 Difference]: Without dead ends: 19 [2020-10-25 19:37:12,401 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 19:37:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-25 19:37:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-25 19:37:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 19:37:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2020-10-25 19:37:12,408 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2020-10-25 19:37:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:12,409 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-10-25 19:37:12,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:37:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2020-10-25 19:37:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:37:12,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:12,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:37:12,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:37:12,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2020-10-25 19:37:12,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:37:12,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760424763] [2020-10-25 19:37:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:37:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:12,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760424763] [2020-10-25 19:37:12,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:12,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:37:12,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963901122] [2020-10-25 19:37:12,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:37:12,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:37:12,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:37:12,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:37:12,589 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand 3 states. [2020-10-25 19:37:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:12,766 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2020-10-25 19:37:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:37:12,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:37:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:12,768 INFO L225 Difference]: With dead ends: 48 [2020-10-25 19:37:12,768 INFO L226 Difference]: Without dead ends: 33 [2020-10-25 19:37:12,769 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 19:37:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-25 19:37:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-25 19:37:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-25 19:37:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-25 19:37:12,776 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2020-10-25 19:37:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:12,776 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-25 19:37:12,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:37:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-25 19:37:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:37:12,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:12,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:37:12,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:37:12,779 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2020-10-25 19:37:12,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:37:12,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398600951] [2020-10-25 19:37:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:37:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:37:12,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:37:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:37:12,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:37:12,895 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:37:12,895 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:37:12,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:37:12,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:37:12 BoogieIcfgContainer [2020-10-25 19:37:12,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:37:12,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:37:12,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:37:12,929 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:37:12,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:37:11" (3/4) ... [2020-10-25 19:37:12,931 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:37:12,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:37:12,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:37:12,991 INFO L168 Benchmark]: Toolchain (without parser) took 2035.97 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 36.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:12,992 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 48.2 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:37:12,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 26.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:12,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.48 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:12,995 INFO L168 Benchmark]: Boogie Preprocessor took 44.83 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 23.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:37:12,996 INFO L168 Benchmark]: RCFGBuilder took 380.38 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 32.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:12,996 INFO L168 Benchmark]: TraceAbstraction took 1160.31 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 38.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:12,997 INFO L168 Benchmark]: Witness Printer took 60.83 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 36.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:13,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 48.2 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 26.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.48 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.83 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 23.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 380.38 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 32.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1160.31 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 38.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.83 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 36.2 MB in the end (delta: 2.4 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: 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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...