/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/memsafety/cmp-freed-ptr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:58:05,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:58:05,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:58:05,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:58:05,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:58:05,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:58:05,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:58:05,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:58:05,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:58:05,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:58:05,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:58:05,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:58:05,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:58:05,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:58:05,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:58:05,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:58:05,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:58:05,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:58:05,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:58:05,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:58:05,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:58:05,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:58:05,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:58:05,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:58:05,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 16:58:05,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 16:58:05,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 16:58:05,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 16:58:05,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 16:58:05,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 16:58:05,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:58:05,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:58:05,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:58:05,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:58:05,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:58:05,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:58:05,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:58:05,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:58:05,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:58:05,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:58:05,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:58:05,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:58:05,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:58:05,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:58:05,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:58:05,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:58:05,166 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:58:05,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:58:05,166 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:58:05,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:58:05,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:58:05,167 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:58:05,168 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:58:05,168 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:58:05,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:58:05,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:58:05,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:58:05,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:58:05,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:58:05,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:58:05,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:58:05,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:58:05,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:58:05,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:58:05,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:58:05,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:58:05,172 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:58:05,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:58:05,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:58:05,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:58:05,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:58:05,676 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:58:05,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-12-23 16:58:05,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09fc93596/ed83273a3de14ab2b6f589464c339df5/FLAG2e28c5615 [2020-12-23 16:58:06,525 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:58:06,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-12-23 16:58:06,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09fc93596/ed83273a3de14ab2b6f589464c339df5/FLAG2e28c5615 [2020-12-23 16:58:06,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09fc93596/ed83273a3de14ab2b6f589464c339df5 [2020-12-23 16:58:06,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:58:06,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:58:06,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:58:06,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:58:06,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:58:06,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:58:06" (1/1) ... [2020-12-23 16:58:06,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649188a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:06, skipping insertion in model container [2020-12-23 16:58:06,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:58:06" (1/1) ... [2020-12-23 16:58:06,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:58:06,876 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 16:58:07,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:58:07,234 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 16:58:07,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:58:07,356 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:58:07,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07 WrapperNode [2020-12-23 16:58:07,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:58:07,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:58:07,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:58:07,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:58:07,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:58:07,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:58:07,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:58:07,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:58:07,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... [2020-12-23 16:58:07,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:58:07,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:58:07,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:58:07,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:58:07,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:58:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:58:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:58:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:58:07,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:58:07,831 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 16:58:07,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:58:07 BoogieIcfgContainer [2020-12-23 16:58:07,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:58:07,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:58:07,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:58:07,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:58:07,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:58:06" (1/3) ... [2020-12-23 16:58:07,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766ff020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:58:07, skipping insertion in model container [2020-12-23 16:58:07,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:07" (2/3) ... [2020-12-23 16:58:07,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766ff020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:58:07, skipping insertion in model container [2020-12-23 16:58:07,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:58:07" (3/3) ... [2020-12-23 16:58:07,846 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-12-23 16:58:07,856 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:58:07,863 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-23 16:58:07,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-23 16:58:07,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:58:07,921 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:58:07,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:58:07,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:58:07,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:58:07,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:58:07,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:58:07,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:58:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-23 16:58:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:58:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:07,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:58:07,951 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2020-12-23 16:58:07,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:07,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119189841] [2020-12-23 16:58:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:08,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119189841] [2020-12-23 16:58:08,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:08,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:08,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029285241] [2020-12-23 16:58:08,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:08,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:08,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,367 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-12-23 16:58:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:08,402 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-23 16:58:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:08,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:58:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:08,416 INFO L225 Difference]: With dead ends: 24 [2020-12-23 16:58:08,417 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 16:58:08,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 16:58:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-23 16:58:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 16:58:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-23 16:58:08,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 3 [2020-12-23 16:58:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:08,472 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-23 16:58:08,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-23 16:58:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 16:58:08,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:08,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 16:58:08,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:58:08,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:08,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:08,481 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2020-12-23 16:58:08,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:08,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465229921] [2020-12-23 16:58:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:08,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465229921] [2020-12-23 16:58:08,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:08,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:08,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628855133] [2020-12-23 16:58:08,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:08,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:08,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,588 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2020-12-23 16:58:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:08,623 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-23 16:58:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:08,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 16:58:08,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:08,625 INFO L225 Difference]: With dead ends: 21 [2020-12-23 16:58:08,625 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 16:58:08,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 16:58:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-23 16:58:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 16:58:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-23 16:58:08,638 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 4 [2020-12-23 16:58:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:08,639 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-23 16:58:08,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-23 16:58:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 16:58:08,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:08,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 16:58:08,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:58:08,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:08,642 INFO L82 PathProgramCache]: Analyzing trace with hash 28692770, now seen corresponding path program 1 times [2020-12-23 16:58:08,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:08,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983972751] [2020-12-23 16:58:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:08,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983972751] [2020-12-23 16:58:08,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:08,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:08,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198989469] [2020-12-23 16:58:08,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:08,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:08,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:08,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,724 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-12-23 16:58:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:08,762 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-23 16:58:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:08,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-23 16:58:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:08,763 INFO L225 Difference]: With dead ends: 20 [2020-12-23 16:58:08,763 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 16:58:08,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 16:58:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 16:58:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 16:58:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 16:58:08,771 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 5 [2020-12-23 16:58:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:08,772 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 16:58:08,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 16:58:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:58:08,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:08,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:08,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:58:08,780 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:08,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1803949765, now seen corresponding path program 1 times [2020-12-23 16:58:08,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:08,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378052836] [2020-12-23 16:58:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:08,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378052836] [2020-12-23 16:58:08,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:08,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:08,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443783878] [2020-12-23 16:58:08,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:08,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:08,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:08,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,913 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2020-12-23 16:58:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:08,925 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-23 16:58:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:08,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:58:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:08,926 INFO L225 Difference]: With dead ends: 18 [2020-12-23 16:58:08,927 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 16:58:08,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 16:58:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 16:58:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 16:58:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-23 16:58:08,930 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2020-12-23 16:58:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:08,936 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-23 16:58:08,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-23 16:58:08,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:58:08,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:08,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:08,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:58:08,938 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:08,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:08,939 INFO L82 PathProgramCache]: Analyzing trace with hash 87867921, now seen corresponding path program 1 times [2020-12-23 16:58:08,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:08,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117310598] [2020-12-23 16:58:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:08,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117310598] [2020-12-23 16:58:08,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:08,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:08,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731984177] [2020-12-23 16:58:08,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:08,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:08,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,976 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-12-23 16:58:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:08,996 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-23 16:58:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:08,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 16:58:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:08,998 INFO L225 Difference]: With dead ends: 16 [2020-12-23 16:58:08,998 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 16:58:08,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 16:58:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 16:58:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 16:58:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-23 16:58:09,002 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-12-23 16:58:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:09,002 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-23 16:58:09,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-23 16:58:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:58:09,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:09,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:09,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:58:09,003 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:09,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1571061689, now seen corresponding path program 1 times [2020-12-23 16:58:09,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856293439] [2020-12-23 16:58:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:09,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856293439] [2020-12-23 16:58:09,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:09,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:09,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682467455] [2020-12-23 16:58:09,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:09,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:09,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:09,039 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-23 16:58:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:09,060 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-23 16:58:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:09,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 16:58:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:09,062 INFO L225 Difference]: With dead ends: 18 [2020-12-23 16:58:09,062 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 16:58:09,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 16:58:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 16:58:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 16:58:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-23 16:58:09,070 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-12-23 16:58:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:09,071 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-23 16:58:09,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-23 16:58:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:58:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:09,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:09,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:58:09,073 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1458272044, now seen corresponding path program 1 times [2020-12-23 16:58:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:09,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450893189] [2020-12-23 16:58:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:09,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450893189] [2020-12-23 16:58:09,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:09,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:58:09,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144322028] [2020-12-23 16:58:09,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:58:09,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:09,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:58:09,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:09,158 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-12-23 16:58:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:09,206 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-23 16:58:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:58:09,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 16:58:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:09,207 INFO L225 Difference]: With dead ends: 17 [2020-12-23 16:58:09,208 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 16:58:09,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 16:58:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 16:58:09,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 16:58:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-23 16:58:09,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-12-23 16:58:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:09,211 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-23 16:58:09,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:58:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-23 16:58:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:58:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:09,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:09,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:58:09,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:58:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash -16437808, now seen corresponding path program 1 times [2020-12-23 16:58:09,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:09,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211634382] [2020-12-23 16:58:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:58:09,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:58:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:58:09,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:58:09,273 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 16:58:09,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 16:58:09,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:58:09,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:58:09 BoogieIcfgContainer [2020-12-23 16:58:09,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:58:09,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:58:09,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:58:09,302 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:58:09,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:58:07" (3/4) ... [2020-12-23 16:58:09,305 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 16:58:09,363 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety/cmp-freed-ptr.i-witness.graphml [2020-12-23 16:58:09,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:58:09,365 INFO L168 Benchmark]: Toolchain (without parser) took 2579.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 58.4 MB in the end (delta: 66.7 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,366 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:58:09,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 105.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 103.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,368 INFO L168 Benchmark]: Boogie Preprocessor took 39.34 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 102.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,369 INFO L168 Benchmark]: RCFGBuilder took 387.21 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 125.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,370 INFO L168 Benchmark]: TraceAbstraction took 1465.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 60.5 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,370 INFO L168 Benchmark]: Witness Printer took 61.47 ms. Allocated memory is still 151.0 MB. Free memory was 60.5 MB in the beginning and 58.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:58:09,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 105.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 103.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.34 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 102.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.21 ms. Allocated memory is still 151.0 MB. Free memory was 102.5 MB in the beginning and 125.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1465.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 60.5 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Witness Printer took 61.47 ms. Allocated memory is still 151.0 MB. Free memory was 60.5 MB in the beginning and 58.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; [L547] free(y) [L547] free(y) [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; [L550] COND TRUE adressX == adressY [L552] free(x) [L552] free(x) [L552] free(x) [L554] free(x) [L554] free(x) [L554] free(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 73 SDslu, 27 SDs, 0 SdLazy, 67 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...