./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa3ae4378a5284e50be7191d52900376e96b0fdc ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:46:30,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:46:30,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:46:30,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:46:30,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:46:30,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:46:30,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:46:30,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:46:30,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:46:30,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:46:30,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:46:30,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:46:30,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:46:30,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:46:30,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:46:30,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:46:30,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:46:30,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:46:30,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:46:30,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:46:30,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:46:30,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:46:30,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:46:30,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:46:30,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:46:30,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:46:30,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:46:30,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:46:30,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:46:30,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:46:30,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:46:30,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:46:30,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:46:30,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:46:30,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:46:30,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:46:30,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:46:30,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:46:30,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:46:30,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:46:30,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:46:30,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:46:30,889 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:46:30,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:46:30,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:46:30,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:46:30,891 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:46:30,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:46:30,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:46:30,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:46:30,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:46:30,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:46:30,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:46:30,893 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:46:30,894 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:46:30,894 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:46:30,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:46:30,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:46:30,895 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:46:30,895 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:46:30,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:46:30,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:46:30,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:46:30,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:46:30,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:46:30,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:46:30,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:46:30,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:46:30,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:46:30,898 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> aa3ae4378a5284e50be7191d52900376e96b0fdc [2019-11-28 02:46:31,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:46:31,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:46:31,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:46:31,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:46:31,298 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:46:31,299 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2019-11-28 02:46:31,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53688372c/d814881d91ce4b4cb6d6f3c81690573a/FLAG5f0d6e550 [2019-11-28 02:46:31,813 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:46:31,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2019-11-28 02:46:31,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53688372c/d814881d91ce4b4cb6d6f3c81690573a/FLAG5f0d6e550 [2019-11-28 02:46:32,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53688372c/d814881d91ce4b4cb6d6f3c81690573a [2019-11-28 02:46:32,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:46:32,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:46:32,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:46:32,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:46:32,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:46:32,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f57c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32, skipping insertion in model container [2019-11-28 02:46:32,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:46:32,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:46:32,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:46:32,438 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:46:32,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:46:32,464 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:46:32,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32 WrapperNode [2019-11-28 02:46:32,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:46:32,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:46:32,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:46:32,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:46:32,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (1/1) ... [2019-11-28 02:46:32,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:46:32,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:46:32,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:46:32,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:46:32,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (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 02:46:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:46:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:46:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:46:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:46:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:46:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:46:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:46:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:46:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:46:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:46:32,833 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:46:32,833 INFO L297 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-28 02:46:32,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:32 BoogieIcfgContainer [2019-11-28 02:46:32,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:46:32,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:46:32,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:46:32,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:46:32,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:46:32" (1/3) ... [2019-11-28 02:46:32,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7658d9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:32, skipping insertion in model container [2019-11-28 02:46:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:32" (2/3) ... [2019-11-28 02:46:32,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7658d9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:32, skipping insertion in model container [2019-11-28 02:46:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:32" (3/3) ... [2019-11-28 02:46:32,849 INFO L109 eAbstractionObserver]: Analyzing ICFG derefInLoop1.c [2019-11-28 02:46:32,860 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:46:32,869 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 02:46:32,902 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 02:46:32,931 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:46:32,931 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:46:32,931 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:46:32,931 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:46:32,932 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:46:32,932 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:46:32,932 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:46:32,932 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:46:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-28 02:46:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:46:32,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:32,962 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:32,963 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:46:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1075805963, now seen corresponding path program 1 times [2019-11-28 02:46:32,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:32,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117384239] [2019-11-28 02:46:32,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,133 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 02:46:33,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117384239] [2019-11-28 02:46:33,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:46:33,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:46:33,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669876124] [2019-11-28 02:46:33,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:46:33,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:46:33,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:46:33,159 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-11-28 02:46:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:33,277 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-28 02:46:33,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:46:33,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 02:46:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:33,299 INFO L225 Difference]: With dead ends: 21 [2019-11-28 02:46:33,300 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:46:33,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:46:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:46:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:46:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:46:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-28 02:46:33,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2019-11-28 02:46:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:33,353 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-28 02:46:33,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:46:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-28 02:46:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:46:33,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:33,358 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:33,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:46:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1075817783, now seen corresponding path program 1 times [2019-11-28 02:46:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:33,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862805926] [2019-11-28 02:46:33,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,477 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 02:46:33,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862805926] [2019-11-28 02:46:33,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:46:33,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:46:33,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477892891] [2019-11-28 02:46:33,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:46:33,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:33,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:46:33,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:46:33,481 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-11-28 02:46:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:33,534 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-28 02:46:33,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:46:33,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 02:46:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:33,536 INFO L225 Difference]: With dead ends: 18 [2019-11-28 02:46:33,536 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 02:46:33,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:46:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 02:46:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-28 02:46:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 02:46:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-28 02:46:33,541 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-11-28 02:46:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:33,543 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-28 02:46:33,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:46:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-28 02:46:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:46:33,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:33,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:33,546 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:46:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -643356833, now seen corresponding path program 1 times [2019-11-28 02:46:33,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:33,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393755959] [2019-11-28 02:46:33,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:33,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393755959] [2019-11-28 02:46:33,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126876893] [2019-11-28 02:46:33,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:33,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:46:33,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:33,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:33,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-28 02:46:33,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700106912] [2019-11-28 02:46:33,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:46:33,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:33,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:46:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:46:33,733 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2019-11-28 02:46:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:33,808 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-28 02:46:33,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:46:33,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 02:46:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:33,809 INFO L225 Difference]: With dead ends: 19 [2019-11-28 02:46:33,809 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 02:46:33,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:46:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 02:46:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-28 02:46:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 02:46:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-28 02:46:33,814 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2019-11-28 02:46:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:33,814 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-28 02:46:33,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:46:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-28 02:46:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:46:33,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:33,815 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:34,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:34,021 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:46:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:34,022 INFO L82 PathProgramCache]: Analyzing trace with hash -643355199, now seen corresponding path program 1 times [2019-11-28 02:46:34,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:34,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213085741] [2019-11-28 02:46:34,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:46:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:46:34,079 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:46:34,079 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:46:34,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:46:34 BoogieIcfgContainer [2019-11-28 02:46:34,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:46:34,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:46:34,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:46:34,108 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:46:34,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:32" (3/4) ... [2019-11-28 02:46:34,111 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:46:34,155 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:46:34,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:46:34,158 INFO L168 Benchmark]: Toolchain (without parser) took 1947.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -93.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,158 INFO L168 Benchmark]: CDTParser took 1.50 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 02:46:34,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.79 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,160 INFO L168 Benchmark]: Boogie Preprocessor took 88.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,161 INFO L168 Benchmark]: RCFGBuilder took 280.70 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,162 INFO L168 Benchmark]: TraceAbstraction took 1271.23 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: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,163 INFO L168 Benchmark]: Witness Printer took 47.31 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:34,167 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 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 251.79 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 280.70 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1271.23 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: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. * Witness Printer took 47.31 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={3:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={3:0}, i=0, p={3:0}] [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={2:0}, i=1, p={3:0}] [L5] COND FALSE !(i == 0) VAL [a={2:0}, i=1, p={3:0}] [L8] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 13 SDslu, 34 SDs, 0 SdLazy, 62 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 821 SizeOfPredicates, 1 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...