./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/derefAfterFree1.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 d452f938d74713dbff7e0330f8ef393409d67ffe ..................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-26 03:55:54,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:55:54,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:55:54,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:55:54,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:55:54,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:55:54,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:55:54,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:55:54,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:55:54,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:55:54,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:55:54,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:55:54,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:55:54,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:55:54,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:55:54,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:55:54,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:55:54,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:55:54,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:55:54,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:55:54,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:55:54,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:55:54,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:55:54,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:55:54,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:55:54,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:55:54,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:55:54,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:55:54,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:55:54,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:55:54,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:55:54,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:55:54,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:55:54,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:55:54,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:55:54,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:55:54,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:55:54,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:55:54,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:55:54,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:55:54,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:55:54,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:55:54,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:55:54,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:55:54,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:55:54,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:55:54,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:55:54,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:55:54,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:55:54,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:55:54,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:55:54,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:55:54,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:55:54,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:55:54,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:55:54,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:55:54,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:55:54,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:55:54,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:55:54,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:55:54,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:55:54,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:55:54,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:55:54,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:55:54,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:55:54,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d452f938d74713dbff7e0330f8ef393409d67ffe [2020-10-26 03:55:55,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:55:55,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:55:55,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:55:55,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:55:55,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:55:55,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-10-26 03:55:55,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f28cc67/4e42f491958e4869b81c6bb31ec74879/FLAG02ee5f94b [2020-10-26 03:55:55,866 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:55:55,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-10-26 03:55:55,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f28cc67/4e42f491958e4869b81c6bb31ec74879/FLAG02ee5f94b [2020-10-26 03:55:56,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f28cc67/4e42f491958e4869b81c6bb31ec74879 [2020-10-26 03:55:56,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:55:56,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:55:56,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:56,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:55:56,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:55:56,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@802cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56, skipping insertion in model container [2020-10-26 03:55:56,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:55:56,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:55:56,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:56,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:55:56,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:56,475 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:55:56,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56 WrapperNode [2020-10-26 03:55:56,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:56,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:55:56,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:55:56,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:55:56,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (1/1) ... [2020-10-26 03:55:56,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:55:56,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:55:56,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:55:56,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:55:56,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (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 [2020-10-26 03:55:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:55:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:55:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure freePointer [2020-10-26 03:55:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:55:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:55:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:55:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure freePointer [2020-10-26 03:55:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:55:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:55:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:55:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:55:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:55:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:55:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:55:56,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:55:56,828 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-26 03:55:56,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:56 BoogieIcfgContainer [2020-10-26 03:55:56,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:55:56,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:55:56,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:55:56,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:55:56,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:55:56" (1/3) ... [2020-10-26 03:55:56,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5a5577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:56, skipping insertion in model container [2020-10-26 03:55:56,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:56" (2/3) ... [2020-10-26 03:55:56,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5a5577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:56, skipping insertion in model container [2020-10-26 03:55:56,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:56" (3/3) ... [2020-10-26 03:55:56,840 INFO L111 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2020-10-26 03:55:56,854 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:55:56,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-26 03:55:56,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-26 03:55:56,956 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:55:56,959 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:55:56,959 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:55:56,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:55:56,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:55:56,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:55:56,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:55:56,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:55:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-26 03:55:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 03:55:57,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:57,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:57,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:55:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1608321379, now seen corresponding path program 1 times [2020-10-26 03:55:57,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:57,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48758650] [2020-10-26 03:55:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48758650] [2020-10-26 03:55:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:57,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:55:57,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190507437] [2020-10-26 03:55:57,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:55:57,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:55:57,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:55:57,313 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-26 03:55:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:57,554 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-26 03:55:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:55:57,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-26 03:55:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:57,569 INFO L225 Difference]: With dead ends: 24 [2020-10-26 03:55:57,569 INFO L226 Difference]: Without dead ends: 21 [2020-10-26 03:55:57,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:55:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-26 03:55:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-26 03:55:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-26 03:55:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-10-26 03:55:57,624 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2020-10-26 03:55:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:57,624 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-10-26 03:55:57,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:55:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-10-26 03:55:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:55:57,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:57,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:57,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:55:57,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:55:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1681644769, now seen corresponding path program 1 times [2020-10-26 03:55:57,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:57,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385050231] [2020-10-26 03:55:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:57,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385050231] [2020-10-26 03:55:57,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:57,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:55:57,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878044478] [2020-10-26 03:55:57,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:55:57,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:55:57,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:55:57,755 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 6 states. [2020-10-26 03:55:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:57,853 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-10-26 03:55:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:55:57,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 03:55:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:57,854 INFO L225 Difference]: With dead ends: 20 [2020-10-26 03:55:57,855 INFO L226 Difference]: Without dead ends: 20 [2020-10-26 03:55:57,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:55:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-26 03:55:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-26 03:55:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 03:55:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-10-26 03:55:57,861 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2020-10-26 03:55:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:57,861 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-10-26 03:55:57,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:55:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-10-26 03:55:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:55:57,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:57,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:57,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:55:57,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:55:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:57,865 INFO L82 PathProgramCache]: Analyzing trace with hash -591380251, now seen corresponding path program 1 times [2020-10-26 03:55:57,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:57,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112949275] [2020-10-26 03:55:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:57,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112949275] [2020-10-26 03:55:57,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:57,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:55:57,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677070697] [2020-10-26 03:55:57,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:55:57,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:55:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:55:57,942 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2020-10-26 03:55:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:58,025 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-26 03:55:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:55:58,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-26 03:55:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:58,027 INFO L225 Difference]: With dead ends: 19 [2020-10-26 03:55:58,027 INFO L226 Difference]: Without dead ends: 19 [2020-10-26 03:55:58,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:55:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-26 03:55:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-26 03:55:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 03:55:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-26 03:55:58,033 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2020-10-26 03:55:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:58,033 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-26 03:55:58,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:55:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-26 03:55:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 03:55:58,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:58,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:58,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:55:58,036 INFO L429 AbstractCegarLoop]: === Iteration 4 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:55:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:58,037 INFO L82 PathProgramCache]: Analyzing trace with hash 146827991, now seen corresponding path program 1 times [2020-10-26 03:55:58,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:58,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193058527] [2020-10-26 03:55:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:58,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:58,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:58,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:55:58,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:55:58,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:55:58,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:55:58 BoogieIcfgContainer [2020-10-26 03:55:58,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:55:58,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:55:58,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:55:58,130 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:55:58,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:56" (3/4) ... [2020-10-26 03:55:58,133 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:55:58,195 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:55:58,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:55:58,200 INFO L168 Benchmark]: Toolchain (without parser) took 2046.56 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 31.3 MB in the beginning and 26.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,201 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:58,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.90 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 32.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,204 INFO L168 Benchmark]: Boogie Preprocessor took 37.94 ms. Allocated memory is still 48.2 MB. Free memory was 32.1 MB in the beginning and 30.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,207 INFO L168 Benchmark]: RCFGBuilder took 314.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 29.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,208 INFO L168 Benchmark]: TraceAbstraction took 1296.42 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 29.2 MB in the beginning and 27.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,211 INFO L168 Benchmark]: Witness Printer took 65.81 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 26.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:58,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.90 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 32.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.94 ms. Allocated memory is still 48.2 MB. Free memory was 32.1 MB in the beginning and 30.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 314.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 29.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1296.42 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 29.2 MB in the beginning and 27.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 65.81 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 26.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); VAL [malloc(10 * sizeof(int))={2:0}, p={2:0}] [L12] CALL freePointer(p) VAL [p={2:0}] [L6] free(p) VAL [p={2:0}, p={2:0}] [L6] free(p) VAL [p={2:0}, p={2:0}] [L6] free(p) [L12] RET freePointer(p) VAL [malloc(10 * sizeof(int))={2:0}, p={2:0}] [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 47 SDslu, 75 SDs, 0 SdLazy, 114 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...