./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test02.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/ldv-regression/test02.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 4dac52ac01526cd7c5a6c950ddf0191864040fa0 ................................................................................................................................................................................................................................. 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 16:57:25,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:25,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:25,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:25,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:25,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:25,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:25,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:25,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:25,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:25,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:25,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:25,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:25,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:25,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:25,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:25,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:25,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:25,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:25,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:25,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:25,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:25,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:25,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:25,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:25,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:25,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:25,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:25,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:25,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:25,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:25,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:25,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:25,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:25,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:25,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:25,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:25,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:25,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:25,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:25,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:25,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:25,853 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:25,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:25,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:25,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:25,857 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:25,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:25,857 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:25,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:25,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:25,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:25,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:25,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:25,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:25,861 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:25,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:25,861 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:25,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:25,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:25,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:25,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:25,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:25,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:25,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:25,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:25,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:25,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:25,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:25,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:25,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:25,865 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 -> 4dac52ac01526cd7c5a6c950ddf0191864040fa0 [2019-11-28 16:57:26,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:26,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:26,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:26,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:26,185 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:26,186 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test02.c [2019-11-28 16:57:26,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415338362/83c7d1ce97c74c6ab211a7bb9c04924d/FLAG4a9c33713 [2019-11-28 16:57:26,737 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:26,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test02.c [2019-11-28 16:57:26,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415338362/83c7d1ce97c74c6ab211a7bb9c04924d/FLAG4a9c33713 [2019-11-28 16:57:27,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415338362/83c7d1ce97c74c6ab211a7bb9c04924d [2019-11-28 16:57:27,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:27,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:27,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:27,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:27,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:27,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6b09b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27, skipping insertion in model container [2019-11-28 16:57:27,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:27,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:27,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:27,398 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:27,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:27,426 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:27,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27 WrapperNode [2019-11-28 16:57:27,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:27,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:27,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:27,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:27,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:27,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:27,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:27,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:27,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (1/1) ... [2019-11-28 16:57:27,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:27,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:27,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:27,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:27,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (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 16:57:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:27,757 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:27,757 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:57:27,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:27 BoogieIcfgContainer [2019-11-28 16:57:27,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:27,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:27,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:27,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:27,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:27" (1/3) ... [2019-11-28 16:57:27,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2d06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:27, skipping insertion in model container [2019-11-28 16:57:27,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:27" (2/3) ... [2019-11-28 16:57:27,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2d06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:27, skipping insertion in model container [2019-11-28 16:57:27,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:27" (3/3) ... [2019-11-28 16:57:27,766 INFO L109 eAbstractionObserver]: Analyzing ICFG test02.c [2019-11-28 16:57:27,774 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:27,779 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:27,790 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:27,816 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:27,817 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:27,817 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:27,818 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:27,818 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:27,818 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:27,818 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:27,818 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-28 16:57:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:57:27,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:27,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:57:27,841 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-28 16:57:27,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:27,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253893108] [2019-11-28 16:57:27,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:27,967 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:27,968 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:27,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:27 BoogieIcfgContainer [2019-11-28 16:57:27,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:27,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:27,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:27,996 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:27,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:27" (3/4) ... [2019-11-28 16:57:28,001 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:57:28,044 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:28,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:28,047 INFO L168 Benchmark]: Toolchain (without parser) took 877.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:28,047 INFO L168 Benchmark]: CDTParser took 0.93 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 16:57:28,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:28,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:28,050 INFO L168 Benchmark]: Boogie Preprocessor took 16.93 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 16:57:28,050 INFO L168 Benchmark]: RCFGBuilder took 220.30 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:28,051 INFO L168 Benchmark]: TraceAbstraction took 235.66 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:28,052 INFO L168 Benchmark]: Witness Printer took 49.10 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 16:57:28,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 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 257.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 93.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.93 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 220.30 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 235.66 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 49.10 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: 19]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int q; VAL [q=0] [L7] int a, b; [L8] int *p1 = &a; [L9] int *p2 = p1; [L11] q = 0 VAL [q=0] [L13] COND TRUE p1 == p2 VAL [q=0] [L19] __VERIFIER_error() VAL [q=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 4 NumberOfCodeBlocks, 4 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...