/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-dev-4f750a8 [2020-12-22 19:05:25,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:05:25,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:05:25,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 19:05:25,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:05:25,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:05:25,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:05:25,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:05:25,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:05:25,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:05:25,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:05:25,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:05:25,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:05:25,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:05:25,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:05:25,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:05:25,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:05:25,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:05:25,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:05:25,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:05:25,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:05:25,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:05:25,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:05:25,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:05:25,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:05:25,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:05:25,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:05:25,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:05:25,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:05:25,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:05:25,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:05:25,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:05:25,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:05:25,899 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:05:25,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:05:25,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:05:25,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:05:25,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:05:25,903 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:05:25,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:05:25,904 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:05:25,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:05:25,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:05:25,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:05:25,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:05:25,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:05:25,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:05:25,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:05:25,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:05:25,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:05:25,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:05:25,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:05:25,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:05:25,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:05:26,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:05:26,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:05:26,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:05:26,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:05:26,398 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:05:26,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-12-22 19:05:26,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b42295d9/bf90de8502c04507ba18cf52fd852f65/FLAG6481b7a4a [2020-12-22 19:05:27,296 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:05:27,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-12-22 19:05:27,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b42295d9/bf90de8502c04507ba18cf52fd852f65/FLAG6481b7a4a [2020-12-22 19:05:27,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b42295d9/bf90de8502c04507ba18cf52fd852f65 [2020-12-22 19:05:27,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:05:27,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:05:27,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:05:27,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:05:27,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:05:27,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:05:27" (1/1) ... [2020-12-22 19:05:27,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9ebe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:27, skipping insertion in model container [2020-12-22 19:05:27,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:05:27" (1/1) ... [2020-12-22 19:05:27,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:05:27,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:05:27,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:05:28,000 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:05:28,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:05:28,159 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:05:28,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28 WrapperNode [2020-12-22 19:05:28,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:05:28,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:05:28,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:05:28,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:05:28,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:05:28,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:05:28,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:05:28,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:05:28,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (1/1) ... [2020-12-22 19:05:28,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:05:28,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:05:28,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:05:28,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:05:28,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (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 19:05:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:05:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:05:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:05:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:05:28,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:05:28,731 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 19:05:28,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:05:28 BoogieIcfgContainer [2020-12-22 19:05:28,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:05:28,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:05:28,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:05:28,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:05:28,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:05:27" (1/3) ... [2020-12-22 19:05:28,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eed7b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:05:28, skipping insertion in model container [2020-12-22 19:05:28,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:28" (2/3) ... [2020-12-22 19:05:28,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eed7b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:05:28, skipping insertion in model container [2020-12-22 19:05:28,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:05:28" (3/3) ... [2020-12-22 19:05:28,763 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-12-22 19:05:28,776 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:05:28,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 19:05:28,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 19:05:28,837 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:05:28,838 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:05:28,838 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:05:28,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:05:28,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:05:28,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:05:28,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:05:28,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:05:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-22 19:05:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-22 19:05:28,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:28,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-22 19:05:28,870 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]=== [2020-12-22 19:05:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2020-12-22 19:05:28,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:28,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124776200] [2020-12-22 19:05:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,133 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 19:05:29,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124776200] [2020-12-22 19:05:29,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701404633] [2020-12-22 19:05:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,162 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-12-22 19:05:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,182 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-22 19:05:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-22 19:05:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,194 INFO L225 Difference]: With dead ends: 24 [2020-12-22 19:05:29,194 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 19:05:29,196 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 [2020-12-22 19:05:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 19:05:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 19:05:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 19:05:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-22 19:05:29,236 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 3 [2020-12-22 19:05:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,236 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-22 19:05:29,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-22 19:05:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:05:29,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:05:29,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:05:29,238 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]=== [2020-12-22 19:05:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2020-12-22 19:05:29,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841344041] [2020-12-22 19:05:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,282 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 19:05:29,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841344041] [2020-12-22 19:05:29,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59195526] [2020-12-22 19:05:29,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,287 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2020-12-22 19:05:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,308 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-22 19:05:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:05:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,309 INFO L225 Difference]: With dead ends: 21 [2020-12-22 19:05:29,309 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 19:05:29,310 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 [2020-12-22 19:05:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 19:05:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-22 19:05:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 19:05:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-22 19:05:29,315 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 4 [2020-12-22 19:05:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,315 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-22 19:05:29,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-22 19:05:29,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:05:29,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:05:29,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:05:29,317 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]=== [2020-12-22 19:05:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,319 INFO L82 PathProgramCache]: Analyzing trace with hash 28692770, now seen corresponding path program 1 times [2020-12-22 19:05:29,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236435439] [2020-12-22 19:05:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,354 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 19:05:29,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236435439] [2020-12-22 19:05:29,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473701456] [2020-12-22 19:05:29,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,358 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-12-22 19:05:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,379 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-22 19:05:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:05:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,381 INFO L225 Difference]: With dead ends: 20 [2020-12-22 19:05:29,381 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 19:05:29,382 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 [2020-12-22 19:05:29,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 19:05:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 19:05:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 19:05:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-22 19:05:29,386 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 5 [2020-12-22 19:05:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,386 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-22 19:05:29,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-22 19:05:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:05:29,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:29,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:05:29,388 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]=== [2020-12-22 19:05:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1803949765, now seen corresponding path program 1 times [2020-12-22 19:05:29,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696935665] [2020-12-22 19:05:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,503 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 19:05:29,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696935665] [2020-12-22 19:05:29,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234882781] [2020-12-22 19:05:29,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,508 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2020-12-22 19:05:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,527 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-22 19:05:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:05:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,530 INFO L225 Difference]: With dead ends: 18 [2020-12-22 19:05:29,531 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 19:05:29,533 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 [2020-12-22 19:05:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 19:05:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 19:05:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 19:05:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-22 19:05:29,539 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2020-12-22 19:05:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,540 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-22 19:05:29,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-22 19:05:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:05:29,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:29,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:05:29,545 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]=== [2020-12-22 19:05:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash 87867921, now seen corresponding path program 1 times [2020-12-22 19:05:29,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314588494] [2020-12-22 19:05:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,609 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 19:05:29,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314588494] [2020-12-22 19:05:29,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795504885] [2020-12-22 19:05:29,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,612 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-12-22 19:05:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,631 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-22 19:05:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 19:05:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,632 INFO L225 Difference]: With dead ends: 16 [2020-12-22 19:05:29,633 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 19:05:29,633 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 [2020-12-22 19:05:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 19:05:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 19:05:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 19:05:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 19:05:29,636 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-12-22 19:05:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,636 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 19:05:29,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 19:05:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:05:29,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:29,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:05:29,638 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]=== [2020-12-22 19:05:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1571061689, now seen corresponding path program 1 times [2020-12-22 19:05:29,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220105818] [2020-12-22 19:05:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,676 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 19:05:29,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220105818] [2020-12-22 19:05:29,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:05:29,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995596929] [2020-12-22 19:05:29,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:05:29,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:05:29,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:05:29,679 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-22 19:05:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,697 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-22 19:05:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:05:29,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 19:05:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,699 INFO L225 Difference]: With dead ends: 18 [2020-12-22 19:05:29,699 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 19:05:29,699 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 [2020-12-22 19:05:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 19:05:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 19:05:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 19:05:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-22 19:05:29,703 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-12-22 19:05:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,703 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-22 19:05:29,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:05:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-22 19:05:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:05:29,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:29,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:05:29,705 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]=== [2020-12-22 19:05:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1458272044, now seen corresponding path program 1 times [2020-12-22 19:05:29,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502227156] [2020-12-22 19:05:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:29,784 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 19:05:29,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502227156] [2020-12-22 19:05:29,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:29,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:05:29,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51354594] [2020-12-22 19:05:29,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:05:29,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:29,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:05:29,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:29,788 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-12-22 19:05:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:29,833 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-22 19:05:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:05:29,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 19:05:29,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:29,834 INFO L225 Difference]: With dead ends: 17 [2020-12-22 19:05:29,834 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 19:05:29,835 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 [2020-12-22 19:05:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 19:05:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 19:05:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 19:05:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-22 19:05:29,838 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-12-22 19:05:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:29,838 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-22 19:05:29,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:05:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-22 19:05:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:05:29,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:29,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:29,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:05:29,840 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]=== [2020-12-22 19:05:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash -16437808, now seen corresponding path program 1 times [2020-12-22 19:05:29,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:29,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230656066] [2020-12-22 19:05:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:05:29,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:05:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:05:29,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:05:29,923 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:05:29,923 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:05:29,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:05:29,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:05:29 BoogieIcfgContainer [2020-12-22 19:05:29,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:05:29,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:05:29,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:05:29,958 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:05:29,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:05:28" (3/4) ... [2020-12-22 19:05:29,961 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:05:30,006 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety/cmp-freed-ptr.i-witness.graphml [2020-12-22 19:05:30,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:05:30,008 INFO L168 Benchmark]: Toolchain (without parser) took 2411.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 74.1 MB in the end (delta: 51.2 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,009 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:05:30,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 105.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.35 ms. Allocated memory is still 151.0 MB. Free memory was 105.7 MB in the beginning and 104.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,011 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 102.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,012 INFO L168 Benchmark]: RCFGBuilder took 444.53 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 88.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,013 INFO L168 Benchmark]: TraceAbstraction took 1212.07 ms. Allocated memory is still 151.0 MB. Free memory was 87.7 MB in the beginning and 76.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,013 INFO L168 Benchmark]: Witness Printer took 48.33 ms. Allocated memory is still 151.0 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:05:30,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 561.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 105.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 75.35 ms. Allocated memory is still 151.0 MB. Free memory was 105.7 MB in the beginning and 104.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 102.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 444.53 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 88.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1212.07 ms. Allocated memory is still 151.0 MB. Free memory was 87.7 MB in the beginning and 76.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Witness Printer took 48.33 ms. Allocated memory is still 151.0 MB. Free memory was 76.2 MB in the beginning and 74.1 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: 1.0s, 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, 0.0s 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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...