/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/heap-manipulation/tree-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:20:27,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:20:27,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:20:27,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:20:27,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:20:27,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:20:27,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:20:27,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:20:27,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:20:27,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:20:27,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:20:27,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:20:27,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:20:27,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:20:27,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:20:27,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:20:27,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:20:27,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:20:27,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:20:27,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:20:27,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:20:27,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:20:27,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:20:27,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:20:27,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 19:20:27,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 19:20:27,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 19:20:27,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 19:20:27,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 19:20:27,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 19:20:27,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:20:27,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:20:27,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:20:27,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:20:27,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:20:27,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:20:27,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:20:27,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:20:27,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:20:27,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:20:27,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:20:27,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:20:27,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:20:27,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:20:27,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:20:27,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:20:27,857 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:20:27,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:20:27,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:20:27,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:20:27,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:20:27,858 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:20:27,859 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:20:27,859 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:20:27,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:20:27,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:20:27,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:20:27,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:20:27,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:20:27,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:20:27,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:20:27,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:20:27,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:20:27,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:20:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:20:27,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:20:27,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:20:28,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:20:28,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:20:28,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:20:28,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:20:28,361 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:20:28,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-1.i [2020-12-22 19:20:28,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2058b55/01bf761385cb44d9b7a1d82d3195fc4f/FLAG8b49f9718 [2020-12-22 19:20:29,179 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:20:29,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-1.i [2020-12-22 19:20:29,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2058b55/01bf761385cb44d9b7a1d82d3195fc4f/FLAG8b49f9718 [2020-12-22 19:20:29,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2058b55/01bf761385cb44d9b7a1d82d3195fc4f [2020-12-22 19:20:29,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:20:29,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:20:29,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:20:29,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:20:29,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:20:29,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:20:29" (1/1) ... [2020-12-22 19:20:29,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f79b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:29, skipping insertion in model container [2020-12-22 19:20:29,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:20:29" (1/1) ... [2020-12-22 19:20:29,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:20:29,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:20:29,926 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2020-12-22 19:20:29,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:20:30,014 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:20:30,095 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2020-12-22 19:20:30,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:20:30,217 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:20:30,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30 WrapperNode [2020-12-22 19:20:30,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:20:30,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:20:30,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:20:30,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:20:30,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:20:30,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:20:30,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:20:30,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:20:30,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (1/1) ... [2020-12-22 19:20:30,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:20:30,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:20:30,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:20:30,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:20:30,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (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 [2020-12-22 19:20:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:20:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:20:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:20:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:20:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:20:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:20:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:20:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:20:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:20:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:20:31,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:20:31,360 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 19:20:31,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:20:31 BoogieIcfgContainer [2020-12-22 19:20:31,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:20:31,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:20:31,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:20:31,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:20:31,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:20:29" (1/3) ... [2020-12-22 19:20:31,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86b848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:20:31, skipping insertion in model container [2020-12-22 19:20:31,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:30" (2/3) ... [2020-12-22 19:20:31,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86b848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:20:31, skipping insertion in model container [2020-12-22 19:20:31,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:20:31" (3/3) ... [2020-12-22 19:20:31,372 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-1.i [2020-12-22 19:20:31,379 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:20:31,385 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2020-12-22 19:20:31,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2020-12-22 19:20:31,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:20:31,430 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:20:31,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:20:31,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:20:31,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:20:31,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:20:31,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:20:31,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:20:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-12-22 19:20:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:20:31,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:31,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:20:31,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr62REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr57REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr61REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-22 19:20:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash 926918, now seen corresponding path program 1 times [2020-12-22 19:20:31,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:31,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261955584] [2020-12-22 19:20:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:31,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261955584] [2020-12-22 19:20:31,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:31,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:20:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132476403] [2020-12-22 19:20:31,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:20:31,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:31,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:20:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:20:31,663 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2020-12-22 19:20:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:31,688 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2020-12-22 19:20:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:20:31,690 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-22 19:20:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:31,702 INFO L225 Difference]: With dead ends: 147 [2020-12-22 19:20:31,702 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 19:20:31,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:20:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 19:20:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-22 19:20:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-22 19:20:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2020-12-22 19:20:31,764 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 4 [2020-12-22 19:20:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:31,765 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2020-12-22 19:20:31,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:20:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2020-12-22 19:20:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:20:31,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:31,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:20:31,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:20:31,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr62REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr57REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr61REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-22 19:20:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 28695819, now seen corresponding path program 1 times [2020-12-22 19:20:31,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:31,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663052734] [2020-12-22 19:20:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:20:31,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:20:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:20:31,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:20:31,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:20:31,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:20:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:20:31,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:20:31 BoogieIcfgContainer [2020-12-22 19:20:31,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:20:31,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:20:31,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:20:31,864 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:20:31,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:20:31" (3/4) ... [2020-12-22 19:20:31,868 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:20:31,909 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/heap-manipulation/tree-1.i-witness.graphml [2020-12-22 19:20:31,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:20:31,912 INFO L168 Benchmark]: Toolchain (without parser) took 2430.04 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 66.4 MB in the end (delta: 60.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,913 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:20:31,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.91 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 103.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.53 ms. Allocated memory is still 153.1 MB. Free memory was 103.9 MB in the beginning and 135.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,916 INFO L168 Benchmark]: Boogie Preprocessor took 87.08 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 133.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,917 INFO L168 Benchmark]: RCFGBuilder took 930.77 ms. Allocated memory is still 153.1 MB. Free memory was 133.0 MB in the beginning and 90.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,918 INFO L168 Benchmark]: TraceAbstraction took 498.48 ms. Allocated memory is still 153.1 MB. Free memory was 90.0 MB in the beginning and 67.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,919 INFO L168 Benchmark]: Witness Printer took 46.22 ms. Allocated memory is still 153.1 MB. Free memory was 67.9 MB in the beginning and 66.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:20:31,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 732.91 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 103.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 122.53 ms. Allocated memory is still 153.1 MB. Free memory was 103.9 MB in the beginning and 135.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.08 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 133.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 930.77 ms. Allocated memory is still 153.1 MB. Free memory was 133.0 MB in the beginning and 90.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 498.48 ms. Allocated memory is still 153.1 MB. Free memory was 90.0 MB in the beginning and 67.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 46.22 ms. Allocated memory is still 153.1 MB. Free memory was 67.9 MB in the beginning and 66.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 601]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] node->parent = ((void *)0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 67 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 157 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...