./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/multivar_1-2.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-acceleration/multivar_1-2.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 ff2ba79908c4cc0df057811cedfb5347cbd1ad1a .............................................................................................................................................................................................................................. 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 00:57:49,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:57:49,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:57:49,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:57:49,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:57:49,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:57:49,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:57:49,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:57:49,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:57:49,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:57:49,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:57:49,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:57:49,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:57:49,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:57:49,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:57:49,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:57:49,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:57:49,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:57:49,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:57:49,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:57:49,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:57:49,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:57:49,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:57:49,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:57:49,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:57:49,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:57:49,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:57:49,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:57:49,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:57:49,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:57:49,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:57:49,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:57:49,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:57:49,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:57:49,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:57:49,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:57:49,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:57:49,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:57:49,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:57:49,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:57:49,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:57:49,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:57:49,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:57:49,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:57:49,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:57:49,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:57:49,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:57:49,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:57:49,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:57:49,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:57:49,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:57:49,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:57:49,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:57:49,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:57:49,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:57:49,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:57:49,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:57:49,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:57:49,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:57:49,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:57:49,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:57:49,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:57:49,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:57:49,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:57:49,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:57:49,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:57:49,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:57:49,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:57:49,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:57:49,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:57:49,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:57:49,965 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 -> ff2ba79908c4cc0df057811cedfb5347cbd1ad1a [2020-10-20 00:57:50,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:57:50,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:57:50,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:57:50,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:57:50,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:57:50,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/multivar_1-2.c [2020-10-20 00:57:50,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f326db30/5b88fd48acb447d481a556d7552ca600/FLAG87fe5093d [2020-10-20 00:57:50,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:57:50,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/multivar_1-2.c [2020-10-20 00:57:50,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f326db30/5b88fd48acb447d481a556d7552ca600/FLAG87fe5093d [2020-10-20 00:57:51,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f326db30/5b88fd48acb447d481a556d7552ca600 [2020-10-20 00:57:51,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:57:51,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:57:51,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:57:51,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:57:51,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:57:51,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6063d29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51, skipping insertion in model container [2020-10-20 00:57:51,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:57:51,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:57:51,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:57:51,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:57:51,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:57:51,615 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:57:51,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51 WrapperNode [2020-10-20 00:57:51,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:57:51,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:57:51,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:57:51,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:57:51,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:57:51,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:57:51,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:57:51,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:57:51,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (1/1) ... [2020-10-20 00:57:51,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:57:51,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:57:51,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:57:51,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:57:51,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (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 00:57:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:57:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:57:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:57:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:57:51,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:57:51,996 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 00:57:51,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:57:51 BoogieIcfgContainer [2020-10-20 00:57:51,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:57:52,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:57:52,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:57:52,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:57:52,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:57:51" (1/3) ... [2020-10-20 00:57:52,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab08c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:57:52, skipping insertion in model container [2020-10-20 00:57:52,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:57:51" (2/3) ... [2020-10-20 00:57:52,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab08c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:57:52, skipping insertion in model container [2020-10-20 00:57:52,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:57:51" (3/3) ... [2020-10-20 00:57:52,008 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2020-10-20 00:57:52,021 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:57:52,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:57:52,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:57:52,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:57:52,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:57:52,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:57:52,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:57:52,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:57:52,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:57:52,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:57:52,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:57:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 00:57:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:57:52,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:57:52,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:57:52,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:57:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:57:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-10-20 00:57:52,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:57:52,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546502365] [2020-10-20 00:57:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:57:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:57:52,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:57:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:57:52,319 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:57:52,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:57:52,343 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:57:52,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:57:52,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:57:52 BoogieIcfgContainer [2020-10-20 00:57:52,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:57:52,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:57:52,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:57:52,366 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:57:52,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:57:51" (3/4) ... [2020-10-20 00:57:52,369 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:57:52,410 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:57:52,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:57:52,413 INFO L168 Benchmark]: Toolchain (without parser) took 1158.81 ms. Allocated memory was 38.8 MB in the beginning and 41.9 MB in the end (delta: 3.1 MB). Free memory was 16.7 MB in the beginning and 15.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,414 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 30.4 MB. Free memory was 5.6 MB in the beginning and 5.5 MB in the end (delta: 37.0 kB). Peak memory consumption was 37.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.10 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 15.8 MB in the beginning and 16.8 MB in the end (delta: -947.1 kB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 39.8 MB. Free memory was 16.8 MB in the beginning and 15.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,417 INFO L168 Benchmark]: Boogie Preprocessor took 42.72 ms. Allocated memory is still 39.8 MB. Free memory was 15.0 MB in the beginning and 13.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,418 INFO L168 Benchmark]: RCFGBuilder took 289.12 ms. Allocated memory was 39.8 MB in the beginning and 41.4 MB in the end (delta: 1.6 MB). Free memory was 13.9 MB in the beginning and 18.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,419 INFO L168 Benchmark]: TraceAbstraction took 365.52 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 17.4 MB in the beginning and 17.5 MB in the end (delta: -119.7 kB). Peak memory consumption was 404.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,420 INFO L168 Benchmark]: Witness Printer took 44.64 ms. Allocated memory is still 41.9 MB. Free memory was 17.2 MB in the beginning and 15.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:57:52,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 30.4 MB. Free memory was 5.6 MB in the beginning and 5.5 MB in the end (delta: 37.0 kB). Peak memory consumption was 37.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 357.10 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 15.8 MB in the beginning and 16.8 MB in the end (delta: -947.1 kB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 39.8 MB. Free memory was 16.8 MB in the beginning and 15.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.72 ms. Allocated memory is still 39.8 MB. Free memory was 15.0 MB in the beginning and 13.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 289.12 ms. Allocated memory was 39.8 MB in the beginning and 41.4 MB in the end (delta: 1.6 MB). Free memory was 13.9 MB in the beginning and 18.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 365.52 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 17.4 MB in the beginning and 17.5 MB in the end (delta: -119.7 kB). Peak memory consumption was 404.6 kB. Max. memory is 14.3 GB. * Witness Printer took 44.64 ms. Allocated memory is still 41.9 MB. Free memory was 17.2 MB in the beginning and 15.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 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 = __VERIFIER_nondet_uint(); [L15] unsigned int y = x + 1; [L17] COND FALSE !(x < 1024) [L7] COND TRUE !(cond) [L3] __assert_fail("0", "multivar_1-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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...