./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.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/ldv-memsafety/ArraysOfVariableLength2_-write.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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ..................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:37:33,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:37:33,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:37:33,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:37:33,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:37:33,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:37:33,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:37:33,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:37:33,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:37:33,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:37:33,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:37:33,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:37:33,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:37:33,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:37:33,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:37:33,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:37:33,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:37:33,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:37:33,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:37:33,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:37:33,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:37:33,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:37:33,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:37:33,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:37:33,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:37:33,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:37:33,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:37:33,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:37:33,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:37:33,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:37:33,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:37:33,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:37:33,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:37:33,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:37:33,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:37:33,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:37:33,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:37:33,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:37:33,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:37:33,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:37:33,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:37:33,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:37:33,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:37:33,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:37:33,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:37:33,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:37:33,501 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:37:33,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:37:33,502 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:37:33,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:37:33,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:37:33,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:37:33,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:37:33,504 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:37:33,504 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:37:33,505 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:37:33,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:37:33,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:37:33,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:37:33,506 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:37:33,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:37:33,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:37:33,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:37:33,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:37:33,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:37:33,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:37:33,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:37:33,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:37:33,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:37:33,509 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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-11-28 02:37:33,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:37:33,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:37:33,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:37:33,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:37:33,867 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:37:33,868 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-28 02:37:33,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31c83918/a61afba6a3d74344bf4bfa8b07a0099c/FLAG021d0e6c5 [2019-11-28 02:37:34,431 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:37:34,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-28 02:37:34,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31c83918/a61afba6a3d74344bf4bfa8b07a0099c/FLAG021d0e6c5 [2019-11-28 02:37:34,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31c83918/a61afba6a3d74344bf4bfa8b07a0099c [2019-11-28 02:37:34,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:37:34,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:37:34,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:37:34,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:37:34,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:37:34,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:34" (1/1) ... [2019-11-28 02:37:34,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5d8596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:34, skipping insertion in model container [2019-11-28 02:37:34,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:34" (1/1) ... [2019-11-28 02:37:34,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:37:34,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:37:35,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:37:35,120 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:37:35,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:37:35,223 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:37:35,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35 WrapperNode [2019-11-28 02:37:35,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:37:35,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:37:35,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:37:35,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:37:35,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (1/1) ... [2019-11-28 02:37:35,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:37:35,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:37:35,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:37:35,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:37:35,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (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 02:37:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:37:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:37:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-11-28 02:37:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-28 02:37:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:37:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-11-28 02:37:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:37:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-28 02:37:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:37:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:37:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:37:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:37:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:37:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:37:35,737 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:37:35,737 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:37:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:35 BoogieIcfgContainer [2019-11-28 02:37:35,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:37:35,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:37:35,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:37:35,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:37:35,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:34" (1/3) ... [2019-11-28 02:37:35,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1a87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:35, skipping insertion in model container [2019-11-28 02:37:35,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:35" (2/3) ... [2019-11-28 02:37:35,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1a87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:35, skipping insertion in model container [2019-11-28 02:37:35,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:35" (3/3) ... [2019-11-28 02:37:35,752 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2019-11-28 02:37:35,761 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:37:35,768 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-28 02:37:35,779 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-28 02:37:35,800 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:37:35,801 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:37:35,801 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:37:35,801 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:37:35,802 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:37:35,802 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:37:35,802 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:37:35,803 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:37:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-28 02:37:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:37:35,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:35,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:35,833 INFO L410 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:35,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2019-11-28 02:37:35,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:35,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65280421] [2019-11-28 02:37:35,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,058 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 02:37:36,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65280421] [2019-11-28 02:37:36,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:37:36,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:37:36,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767362180] [2019-11-28 02:37:36,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:37:36,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:37:36,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:37:36,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:37:36,086 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2019-11-28 02:37:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:37:36,214 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-11-28 02:37:36,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:37:36,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 02:37:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:37:36,225 INFO L225 Difference]: With dead ends: 52 [2019-11-28 02:37:36,226 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 02:37:36,228 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 02:37:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 02:37:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-28 02:37:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 02:37:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2019-11-28 02:37:36,273 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2019-11-28 02:37:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:37:36,274 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2019-11-28 02:37:36,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:37:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2019-11-28 02:37:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:37:36,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:36,275 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:36,276 INFO L410 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2019-11-28 02:37:36,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:36,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812944754] [2019-11-28 02:37:36,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,363 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 02:37:36,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812944754] [2019-11-28 02:37:36,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:37:36,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:37:36,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304070792] [2019-11-28 02:37:36,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:37:36,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:37:36,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:37:36,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:37:36,371 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2019-11-28 02:37:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:37:36,539 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2019-11-28 02:37:36,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:37:36,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:37:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:37:36,544 INFO L225 Difference]: With dead ends: 56 [2019-11-28 02:37:36,544 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 02:37:36,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:37:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 02:37:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2019-11-28 02:37:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 02:37:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-11-28 02:37:36,572 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2019-11-28 02:37:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:37:36,573 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-11-28 02:37:36,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:37:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-11-28 02:37:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:37:36,574 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:36,575 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:36,576 INFO L410 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2019-11-28 02:37:36,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:36,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328993108] [2019-11-28 02:37:36,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:36,762 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 02:37:36,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328993108] [2019-11-28 02:37:36,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:37:36,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:37:36,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279718187] [2019-11-28 02:37:36,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:37:36,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:37:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:37:36,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:37:36,767 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2019-11-28 02:37:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:37:36,956 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-11-28 02:37:36,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:37:36,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 02:37:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:37:36,960 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:37:36,960 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 02:37:36,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:37:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 02:37:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-28 02:37:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 02:37:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-11-28 02:37:36,972 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2019-11-28 02:37:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:37:36,973 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-11-28 02:37:36,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:37:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-11-28 02:37:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:37:36,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:36,975 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:36,975 INFO L410 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2019-11-28 02:37:36,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:36,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072041008] [2019-11-28 02:37:36,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:37,180 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 02:37:37,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072041008] [2019-11-28 02:37:37,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:37:37,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:37:37,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381734831] [2019-11-28 02:37:37,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:37:37,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:37:37,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:37:37,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:37:37,184 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2019-11-28 02:37:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:37:37,469 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-11-28 02:37:37,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:37:37,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-28 02:37:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:37:37,474 INFO L225 Difference]: With dead ends: 72 [2019-11-28 02:37:37,474 INFO L226 Difference]: Without dead ends: 72 [2019-11-28 02:37:37,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:37:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-28 02:37:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2019-11-28 02:37:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 02:37:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-11-28 02:37:37,484 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2019-11-28 02:37:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:37:37,485 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-28 02:37:37,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:37:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-11-28 02:37:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:37:37,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:37,486 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:37,486 INFO L410 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:37,487 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2019-11-28 02:37:37,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:37,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703683084] [2019-11-28 02:37:37,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:37:37,553 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 02:37:37,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703683084] [2019-11-28 02:37:37,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:37:37,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:37:37,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820595298] [2019-11-28 02:37:37,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:37:37,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:37:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:37:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:37:37,556 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2019-11-28 02:37:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:37:37,674 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-11-28 02:37:37,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:37:37,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 02:37:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:37:37,677 INFO L225 Difference]: With dead ends: 55 [2019-11-28 02:37:37,677 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 02:37:37,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:37:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 02:37:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-28 02:37:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 02:37:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2019-11-28 02:37:37,701 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2019-11-28 02:37:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:37:37,703 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-11-28 02:37:37,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:37:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2019-11-28 02:37:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:37:37,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:37:37,705 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:37:37,705 INFO L410 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:37:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:37:37,706 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2019-11-28 02:37:37,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:37:37,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787991194] [2019-11-28 02:37:37,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:37:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:37:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:37:37,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:37:37,769 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:37:37,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:37:37 BoogieIcfgContainer [2019-11-28 02:37:37,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:37:37,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:37:37,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:37:37,802 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:37:37,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:35" (3/4) ... [2019-11-28 02:37:37,805 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:37:37,856 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:37:37,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:37:37,861 INFO L168 Benchmark]: Toolchain (without parser) took 3044.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 960.3 MB in the beginning and 935.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 152.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,861 INFO L168 Benchmark]: CDTParser took 0.33 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 02:37:37,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,863 INFO L168 Benchmark]: Boogie Preprocessor took 73.98 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,864 INFO L168 Benchmark]: RCFGBuilder took 441.36 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,865 INFO L168 Benchmark]: TraceAbstraction took 2058.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.0 MB in the end (delta: 148.2 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,866 INFO L168 Benchmark]: Witness Printer took 55.18 ms. Allocated memory is still 1.2 GB. Free memory was 942.0 MB in the beginning and 935.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:37:37,870 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 409.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -161.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.98 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 441.36 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2058.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.0 MB in the end (delta: 148.2 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. * Witness Printer took 55.18 ms. Allocated memory is still 1.2 GB. Free memory was 942.0 MB in the beginning and 935.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Result: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 126 SDslu, 177 SDs, 0 SdLazy, 483 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...