./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/terminator_03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/loops/terminator_03-1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99b8f1cc5bec62c63bdabd96b82a49433aa34505 ............................................................................................................................................................................................................................................................... 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-f470102 [2019-11-28 17:04:06,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:04:06,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:04:06,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:04:06,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:04:06,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:04:06,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:04:06,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:04:06,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:04:06,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:04:06,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:04:06,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:04:06,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:04:06,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:04:06,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:04:06,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:04:06,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:04:06,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:04:06,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:04:06,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:04:06,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:04:06,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:04:06,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:04:06,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:04:06,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:04:06,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:04:06,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:04:06,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:04:06,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:04:06,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:04:06,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:04:06,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:04:06,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:04:06,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:04:06,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:04:06,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:04:06,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:04:06,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:04:06,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:04:06,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:04:06,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:04:06,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:04:06,162 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:04:06,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:04:06,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:04:06,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:04:06,165 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:04:06,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:04:06,166 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:04:06,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:04:06,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:04:06,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:04:06,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:04:06,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:04:06,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:04:06,169 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:04:06,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:04:06,169 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:04:06,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:04:06,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:04:06,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:04:06,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:04:06,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:04:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:04:06,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:04:06,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:04:06,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:04:06,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:04:06,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:04:06,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:04:06,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:04:06,173 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(__VERIFIER_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 -> 99b8f1cc5bec62c63bdabd96b82a49433aa34505 [2019-11-28 17:04:06,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:04:06,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:04:06,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:04:06,494 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:04:06,495 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:04:06,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_03-1.c [2019-11-28 17:04:06,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2263a91/a68a18f9af85463381fd99e89debe49e/FLAG66985269d [2019-11-28 17:04:07,036 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:04:07,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_03-1.c [2019-11-28 17:04:07,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2263a91/a68a18f9af85463381fd99e89debe49e/FLAG66985269d [2019-11-28 17:04:07,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2263a91/a68a18f9af85463381fd99e89debe49e [2019-11-28 17:04:07,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:04:07,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:04:07,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:07,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:04:07,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:04:07,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07, skipping insertion in model container [2019-11-28 17:04:07,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:04:07,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:04:07,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:07,670 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:04:07,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:07,696 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:04:07,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07 WrapperNode [2019-11-28 17:04:07,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:07,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:07,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:04:07,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:04:07,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:07,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:04:07,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:04:07,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:04:07,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (1/1) ... [2019-11-28 17:04:07,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:04:07,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:04:07,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:04:07,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:04:07,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (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 [2019-11-28 17:04:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:04:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:04:08,030 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:04:08,031 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:04:08,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:08 BoogieIcfgContainer [2019-11-28 17:04:08,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:04:08,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:04:08,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:04:08,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:04:08,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:07" (1/3) ... [2019-11-28 17:04:08,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e6d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:08, skipping insertion in model container [2019-11-28 17:04:08,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07" (2/3) ... [2019-11-28 17:04:08,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e6d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:08, skipping insertion in model container [2019-11-28 17:04:08,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:08" (3/3) ... [2019-11-28 17:04:08,039 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2019-11-28 17:04:08,049 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:04:08,056 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:04:08,068 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:04:08,095 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:04:08,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:04:08,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:04:08,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:04:08,096 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:04:08,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:04:08,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:04:08,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:04:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:04:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:04:08,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:08,119 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:04:08,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-28 17:04:08,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:08,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643931637] [2019-11-28 17:04:08,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:08,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643931637] [2019-11-28 17:04:08,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:04:08,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:04:08,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259604035] [2019-11-28 17:04:08,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:04:08,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:04:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:04:08,415 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-28 17:04:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:08,480 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-11-28 17:04:08,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:04:08,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 17:04:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:08,492 INFO L225 Difference]: With dead ends: 25 [2019-11-28 17:04:08,493 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:04:08,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:04:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:04:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:04:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:04:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 17:04:08,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-28 17:04:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:08,530 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 17:04:08,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:04:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 17:04:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:04:08,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:08,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:04:08,531 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:08,532 INFO L82 PathProgramCache]: Analyzing trace with hash 920174575, now seen corresponding path program 1 times [2019-11-28 17:04:08,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:08,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484417598] [2019-11-28 17:04:08,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:08,569 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:04:08,569 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:04:08,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:04:08 BoogieIcfgContainer [2019-11-28 17:04:08,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:04:08,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:04:08,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:04:08,587 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:04:08,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:08" (3/4) ... [2019-11-28 17:04:08,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:04:08,624 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:04:08,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:04:08,627 INFO L168 Benchmark]: Toolchain (without parser) took 1190.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -123.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:08,628 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:08,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:08,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:08,630 INFO L168 Benchmark]: Boogie Preprocessor took 21.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:08,631 INFO L168 Benchmark]: RCFGBuilder took 228.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:08,632 INFO L168 Benchmark]: TraceAbstraction took 553.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:08,632 INFO L168 Benchmark]: Witness Printer took 37.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:08,637 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 553.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Witness Printer took 37.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 [L18] COND FALSE !(x<100) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 13 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...