./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-crafted/Arrays02-EquivalentConstantIndices.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 072df04afae5ae28487e0b8208c52f13961dea34 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:56:28,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:56:28,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:56:28,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:56:28,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:56:28,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:56:28,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:56:28,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:56:28,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:56:28,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:56:28,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:56:28,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:56:28,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:56:28,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:56:28,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:56:28,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:56:28,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:56:28,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:56:28,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:56:28,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:56:28,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:56:28,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:56:28,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:56:28,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:56:28,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:56:28,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:56:28,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:56:28,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:56:28,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:56:28,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:56:28,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:56:28,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:56:28,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:56:28,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:56:28,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:56:28,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:56:28,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:56:28,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:56:28,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:56:28,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:56:28,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:56:28,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-26 03:56:28,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:56:28,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:56:28,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:56:28,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:56:28,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:56:28,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:56:28,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:56:28,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:56:28,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:56:28,621 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:56:28,621 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:56:28,621 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:56:28,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:56:28,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:56:28,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:56:28,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:56:28,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:56:28,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:56:28,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:56:28,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:56:28,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:56:28,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:56:28,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:56:28,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:56:28,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:56:28,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 072df04afae5ae28487e0b8208c52f13961dea34 [2020-10-26 03:56:29,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:56:29,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:56:29,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:56:29,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:56:29,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:56:29,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2020-10-26 03:56:29,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d02b7285/3e3b2eac90014748a88459db67569072/FLAG636eb3010 [2020-10-26 03:56:29,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:56:29,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays02-EquivalentConstantIndices.c [2020-10-26 03:56:29,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d02b7285/3e3b2eac90014748a88459db67569072/FLAG636eb3010 [2020-10-26 03:56:30,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d02b7285/3e3b2eac90014748a88459db67569072 [2020-10-26 03:56:30,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:56:30,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:56:30,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:30,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:56:30,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:56:30,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dd5905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30, skipping insertion in model container [2020-10-26 03:56:30,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:56:30,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:56:30,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:30,348 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:56:30,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:30,390 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:56:30,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30 WrapperNode [2020-10-26 03:56:30,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:30,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:56:30,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:56:30,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:56:30,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (1/1) ... [2020-10-26 03:56:30,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:56:30,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:56:30,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:56:30,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:56:30,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (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 03:56:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:56:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:56:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:56:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:56:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:56:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:56:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:56:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:56:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:56:30,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:56:30,809 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:56:30,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:30 BoogieIcfgContainer [2020-10-26 03:56:30,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:56:30,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:56:30,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:56:30,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:56:30,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:56:30" (1/3) ... [2020-10-26 03:56:30,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3213d4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:30, skipping insertion in model container [2020-10-26 03:56:30,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:30" (2/3) ... [2020-10-26 03:56:30,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3213d4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:30, skipping insertion in model container [2020-10-26 03:56:30,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:30" (3/3) ... [2020-10-26 03:56:30,824 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays02-EquivalentConstantIndices.c [2020-10-26 03:56:30,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:56:30,846 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-26 03:56:30,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-26 03:56:30,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:56:30,903 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:56:30,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:56:30,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:56:30,904 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:56:30,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:56:30,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:56:30,905 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:56:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-26 03:56:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 03:56:30,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:30,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:30,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:56:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:30,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1997870250, now seen corresponding path program 1 times [2020-10-26 03:56:30,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:30,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196697656] [2020-10-26 03:56:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,240 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 03:56:31,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196697656] [2020-10-26 03:56:31,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:31,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:56:31,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946572165] [2020-10-26 03:56:31,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:56:31,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:56:31,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:31,272 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-26 03:56:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:31,431 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-26 03:56:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:31,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 03:56:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:31,443 INFO L225 Difference]: With dead ends: 26 [2020-10-26 03:56:31,444 INFO L226 Difference]: Without dead ends: 23 [2020-10-26 03:56:31,446 INFO L677 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 [2020-10-26 03:56:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-26 03:56:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-26 03:56:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 03:56:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-26 03:56:31,484 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2020-10-26 03:56:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:31,484 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-26 03:56:31,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:56:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-26 03:56:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 03:56:31,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:31,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:31,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:56:31,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:56:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1997870251, now seen corresponding path program 1 times [2020-10-26 03:56:31,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:31,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386346723] [2020-10-26 03:56:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,587 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 03:56:31,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386346723] [2020-10-26 03:56:31,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:31,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:56:31,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42784889] [2020-10-26 03:56:31,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:56:31,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:31,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:56:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:31,593 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2020-10-26 03:56:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:31,675 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-26 03:56:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:31,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 03:56:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:31,677 INFO L225 Difference]: With dead ends: 18 [2020-10-26 03:56:31,677 INFO L226 Difference]: Without dead ends: 18 [2020-10-26 03:56:31,678 INFO L677 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 [2020-10-26 03:56:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-26 03:56:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-26 03:56:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-26 03:56:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-26 03:56:31,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2020-10-26 03:56:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:31,682 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-26 03:56:31,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:56:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-26 03:56:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:56:31,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:31,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:31,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:56:31,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:56:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash -270538361, now seen corresponding path program 1 times [2020-10-26 03:56:31,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:31,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338631205] [2020-10-26 03:56:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:31,779 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 03:56:31,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338631205] [2020-10-26 03:56:31,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:31,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:56:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986777192] [2020-10-26 03:56:31,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:56:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:56:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:56:31,783 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-10-26 03:56:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:31,827 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-26 03:56:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:31,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 03:56:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:31,828 INFO L225 Difference]: With dead ends: 17 [2020-10-26 03:56:31,829 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:56:31,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:56:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:56:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:56:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:56:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:56:31,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-26 03:56:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:31,831 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:56:31,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:56:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:56:31,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:56:31,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:56:31,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:56:31 BoogieIcfgContainer [2020-10-26 03:56:31,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:56:31,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:56:31,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:56:31,838 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:56:31,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:30" (3/4) ... [2020-10-26 03:56:31,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:56:31,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:56:31,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:56:31,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-26 03:56:31,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 03:56:31,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:56:31,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:56:31,908 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:56:31,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:56:31,910 INFO L168 Benchmark]: Toolchain (without parser) took 1823.07 ms. Allocated memory was 41.9 MB in the beginning and 65.0 MB in the end (delta: 23.1 MB). Free memory was 20.1 MB in the beginning and 47.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:31,911 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 41.9 MB. Free memory was 22.9 MB in the beginning and 22.9 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:31,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 20.2 MB in the end (delta: -682.9 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:31,913 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 18.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:31,913 INFO L168 Benchmark]: RCFGBuilder took 383.15 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.7 MB in the beginning and 28.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:31,914 INFO L168 Benchmark]: TraceAbstraction took 1022.39 ms. Allocated memory is still 52.4 MB. Free memory was 27.7 MB in the beginning and 22.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:31,915 INFO L168 Benchmark]: Witness Printer took 70.55 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 47.6 MB in the end (delta: -24.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:31,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 41.9 MB. Free memory was 22.9 MB in the beginning and 22.9 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 20.2 MB in the end (delta: -682.9 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 18.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 383.15 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.7 MB in the beginning and 28.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1022.39 ms. Allocated memory is still 52.4 MB. Free memory was 27.7 MB in the beginning and 22.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.55 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 47.6 MB in the end (delta: -24.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 8]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 31 SDslu, 24 SDs, 0 SdLazy, 81 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 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 correct! Received shutdown request...