./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/while_infinite_loop_4.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 ef9ee2b82a40720ec57dc1562759dd601b686b38 ................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 00:00:05,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:00:05,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:00:05,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:00:05,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:00:05,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:00:05,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:00:05,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:00:05,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:00:05,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:00:05,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:00:05,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:00:05,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:00:05,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:00:05,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:00:05,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:00:05,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:00:05,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:00:05,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:00:05,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:00:05,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:00:05,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:00:05,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:00:05,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:00:05,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:00:05,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:00:05,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:00:05,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:00:05,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:00:05,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:00:05,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:00:05,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:00:05,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:00:05,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:00:05,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:00:05,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:00:05,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:00:05,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:00:05,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:00:05,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:00:05,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:00:05,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:00:05,143 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:00:05,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:00:05,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:00:05,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:00:05,148 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:00:05,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:00:05,150 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:00:05,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:00:05,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:00:05,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:00:05,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:00:05,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:00:05,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:00:05,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:00:05,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:00:05,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:00:05,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:00:05,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:00:05,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:00:05,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:00:05,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:00:05,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:00:05,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:00:05,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:00:05,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:00:05,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:00:05,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:00:05,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:00:05,158 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 -> ef9ee2b82a40720ec57dc1562759dd601b686b38 [2019-11-28 00:00:05,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:00:05,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:00:05,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:00:05,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:00:05,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:00:05,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-28 00:00:05,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a1d692c/7c22ee0f4aab4037afe2801aacef6e81/FLAG2970c0e4a [2019-11-28 00:00:06,008 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:00:06,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-11-28 00:00:06,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a1d692c/7c22ee0f4aab4037afe2801aacef6e81/FLAG2970c0e4a [2019-11-28 00:00:06,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a1d692c/7c22ee0f4aab4037afe2801aacef6e81 [2019-11-28 00:00:06,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:00:06,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:00:06,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:00:06,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:00:06,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:00:06,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1ff36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06, skipping insertion in model container [2019-11-28 00:00:06,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:00:06,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:00:06,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:00:06,676 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:00:06,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:00:06,711 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:00:06,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06 WrapperNode [2019-11-28 00:00:06,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:00:06,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:00:06,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:00:06,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:00:06,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:00:06,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:00:06,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:00:06,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:00:06,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (1/1) ... [2019-11-28 00:00:06,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:00:06,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:00:06,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:00:06,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:00:06,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (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 00:00:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:00:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:00:07,053 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:00:07,054 INFO L297 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-28 00:00:07,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:07 BoogieIcfgContainer [2019-11-28 00:00:07,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:00:07,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:00:07,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:00:07,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:00:07,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:00:06" (1/3) ... [2019-11-28 00:00:07,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415dc65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:07, skipping insertion in model container [2019-11-28 00:00:07,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:06" (2/3) ... [2019-11-28 00:00:07,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415dc65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:07, skipping insertion in model container [2019-11-28 00:00:07,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:07" (3/3) ... [2019-11-28 00:00:07,062 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-11-28 00:00:07,071 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:00:07,077 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:00:07,089 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:00:07,113 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:00:07,113 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:00:07,113 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:00:07,113 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:00:07,113 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:00:07,113 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:00:07,114 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:00:07,114 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:00:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 00:00:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 00:00:07,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:00:07,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 00:00:07,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:00:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:00:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2019-11-28 00:00:07,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:00:07,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774112086] [2019-11-28 00:00:07,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:00:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:00:07,239 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 00:00:07,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774112086] [2019-11-28 00:00:07,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:00:07,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:00:07,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542172479] [2019-11-28 00:00:07,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:00:07,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:00:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:00:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:00:07,258 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-28 00:00:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:00:07,277 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2019-11-28 00:00:07,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:00:07,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 00:00:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:00:07,286 INFO L225 Difference]: With dead ends: 22 [2019-11-28 00:00:07,286 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 00:00:07,289 INFO L630 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 [2019-11-28 00:00:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 00:00:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 00:00:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 00:00:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 00:00:07,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 00:00:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:00:07,323 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 00:00:07,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:00:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 00:00:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:00:07,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:00:07,325 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:00:07,325 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:00:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:00:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2019-11-28 00:00:07,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:00:07,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492127193] [2019-11-28 00:00:07,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:00:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:00:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:00:07,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 00:00:07,370 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 00:00:07,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:00:07 BoogieIcfgContainer [2019-11-28 00:00:07,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:00:07,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:00:07,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:00:07,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:00:07,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:07" (3/4) ... [2019-11-28 00:00:07,400 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 00:00:07,452 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:00:07,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:00:07,455 INFO L168 Benchmark]: Toolchain (without parser) took 1041.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -148.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:00:07,456 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:00:07,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:07,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:07,458 INFO L168 Benchmark]: Boogie Preprocessor took 22.16 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 00:00:07,459 INFO L168 Benchmark]: RCFGBuilder took 226.92 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:07,460 INFO L168 Benchmark]: TraceAbstraction took 339.73 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:07,460 INFO L168 Benchmark]: Witness Printer took 56.57 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 00:00:07,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.16 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 226.92 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 339.73 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.57 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: [L10] int x=0; VAL [x=0] [L24] COND TRUE 1 VAL [x=0] [L14] COND TRUE 1 [L15] x=1 VAL [x=1] [L4] COND TRUE !(cond) VAL [x=1] [L5] __VERIFIER_error() VAL [x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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...