/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/test-0158-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:10:41,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:10:41,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:10:41,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:10:41,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:10:41,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:10:41,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:10:41,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:10:41,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:10:41,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:10:41,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:10:41,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:10:41,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:10:41,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:10:41,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:10:41,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:10:41,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:10:41,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:10:41,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:10:41,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:10:41,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:10:41,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:10:41,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:10:41,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:10:41,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:10:41,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:10:41,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:10:41,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:10:41,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:10:41,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:10:41,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:10:41,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:10:41,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:10:41,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:10:41,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:10:41,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:10:41,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:10:41,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:10:41,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:10:41,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:10:41,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:10:41,956 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:10:41,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:10:41,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:10:41,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:10:41,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:10:41,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:10:41,958 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:10:41,958 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:10:41,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:10:41,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:10:41,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:10:41,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:10:41,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:10:41,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:10:41,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:10:41,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:10:41,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:10:41,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:10:41,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:10:41,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:10:41,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:10:42,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:10:42,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:10:42,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:10:42,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:10:42,445 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:10:42,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2021-01-07 05:10:42,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8532785ab/8744c2e92b9b43a89ca293d53be18e75/FLAG90b0db99d [2021-01-07 05:10:43,349 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:10:43,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2021-01-07 05:10:43,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8532785ab/8744c2e92b9b43a89ca293d53be18e75/FLAG90b0db99d [2021-01-07 05:10:43,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8532785ab/8744c2e92b9b43a89ca293d53be18e75 [2021-01-07 05:10:43,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:10:43,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:10:43,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:10:43,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:10:43,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:10:43,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:10:43" (1/1) ... [2021-01-07 05:10:43,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c941c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:43, skipping insertion in model container [2021-01-07 05:10:43,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:10:43" (1/1) ... [2021-01-07 05:10:43,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:10:43,744 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~data~0,],p0] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~data~0,],str],p2] [2021-01-07 05:10:44,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:10:44,112 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[10],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]]] [2021-01-07 05:10:44,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:10:44,263 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:10:44,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44 WrapperNode [2021-01-07 05:10:44,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:10:44,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:10:44,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:10:44,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:10:44,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:10:44,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:10:44,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:10:44,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:10:44,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (1/1) ... [2021-01-07 05:10:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:10:44,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:10:44,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:10:44,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:10:44,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (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 [2021-01-07 05:10:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:10:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:10:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:10:44,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:10:44,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:10:44,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:10:44,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:10:44,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:10:44,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:10:44,975 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-07 05:10:44,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:10:44 BoogieIcfgContainer [2021-01-07 05:10:44,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:10:44,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:10:44,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:10:44,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:10:44,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:10:43" (1/3) ... [2021-01-07 05:10:44,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302c182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:10:44, skipping insertion in model container [2021-01-07 05:10:44,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:10:44" (2/3) ... [2021-01-07 05:10:44,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302c182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:10:44, skipping insertion in model container [2021-01-07 05:10:44,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:10:44" (3/3) ... [2021-01-07 05:10:44,990 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-01-07 05:10:44,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:10:45,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-01-07 05:10:45,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-01-07 05:10:45,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:10:45,064 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:10:45,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:10:45,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:10:45,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:10:45,065 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:10:45,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:10:45,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:10:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-07 05:10:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:10:45,092 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:45,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:10:45,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-01-07 05:10:45,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:45,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686930109] [2021-01-07 05:10:45,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:45,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686930109] [2021-01-07 05:10:45,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:45,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:10:45,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802169974] [2021-01-07 05:10:45,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:10:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:45,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:10:45,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:10:45,424 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2021-01-07 05:10:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:45,511 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-01-07 05:10:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:10:45,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:10:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:45,523 INFO L225 Difference]: With dead ends: 18 [2021-01-07 05:10:45,523 INFO L226 Difference]: Without dead ends: 16 [2021-01-07 05:10:45,526 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 [2021-01-07 05:10:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-07 05:10:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-07 05:10:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-07 05:10:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-01-07 05:10:45,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 3 [2021-01-07 05:10:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:45,561 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-01-07 05:10:45,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:10:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-01-07 05:10:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:10:45,562 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:45,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:10:45,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:10:45,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:45,564 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-01-07 05:10:45,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:45,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123669617] [2021-01-07 05:10:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:45,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123669617] [2021-01-07 05:10:45,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:45,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:10:45,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192420531] [2021-01-07 05:10:45,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:10:45,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:45,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:10:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:10:45,623 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2021-01-07 05:10:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:45,653 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-01-07 05:10:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:10:45,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:10:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:45,656 INFO L225 Difference]: With dead ends: 13 [2021-01-07 05:10:45,656 INFO L226 Difference]: Without dead ends: 13 [2021-01-07 05:10:45,658 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 [2021-01-07 05:10:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-07 05:10:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-07 05:10:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-07 05:10:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-01-07 05:10:45,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2021-01-07 05:10:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-01-07 05:10:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:10:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-01-07 05:10:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:10:45,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:45,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:10:45,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:10:45,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-01-07 05:10:45,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:45,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646556729] [2021-01-07 05:10:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:45,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646556729] [2021-01-07 05:10:45,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:45,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:10:45,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847830564] [2021-01-07 05:10:45,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:10:45,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:10:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:10:45,788 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 5 states. [2021-01-07 05:10:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:45,855 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-01-07 05:10:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:10:45,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-01-07 05:10:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:45,857 INFO L225 Difference]: With dead ends: 12 [2021-01-07 05:10:45,857 INFO L226 Difference]: Without dead ends: 12 [2021-01-07 05:10:45,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:10:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-07 05:10:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-01-07 05:10:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-01-07 05:10:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-01-07 05:10:45,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 6 [2021-01-07 05:10:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:45,876 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-01-07 05:10:45,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:10:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-01-07 05:10:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:10:45,878 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:45,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:45,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:10:45,879 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027012, now seen corresponding path program 1 times [2021-01-07 05:10:45,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:45,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062401638] [2021-01-07 05:10:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:46,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062401638] [2021-01-07 05:10:46,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:46,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:10:46,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765358063] [2021-01-07 05:10:46,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:10:46,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:10:46,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:10:46,044 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2021-01-07 05:10:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:46,114 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-01-07 05:10:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:10:46,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-07 05:10:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:46,117 INFO L225 Difference]: With dead ends: 11 [2021-01-07 05:10:46,117 INFO L226 Difference]: Without dead ends: 11 [2021-01-07 05:10:46,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:10:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-01-07 05:10:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-01-07 05:10:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-07 05:10:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-01-07 05:10:46,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2021-01-07 05:10:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:46,126 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-01-07 05:10:46,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:10:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-01-07 05:10:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:10:46,127 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:46,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:46,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:10:46,127 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash 59262571, now seen corresponding path program 1 times [2021-01-07 05:10:46,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:46,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175890520] [2021-01-07 05:10:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:46,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175890520] [2021-01-07 05:10:46,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:46,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:10:46,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763341618] [2021-01-07 05:10:46,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:10:46,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:46,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:10:46,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:10:46,240 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 5 states. [2021-01-07 05:10:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:46,295 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-01-07 05:10:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:10:46,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-07 05:10:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:46,297 INFO L225 Difference]: With dead ends: 10 [2021-01-07 05:10:46,297 INFO L226 Difference]: Without dead ends: 10 [2021-01-07 05:10:46,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:10:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-07 05:10:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-07 05:10:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-07 05:10:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-01-07 05:10:46,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 8 [2021-01-07 05:10:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:46,301 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-01-07 05:10:46,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:10:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-01-07 05:10:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:10:46,302 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:46,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:46,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:10:46,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:10:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1837139751, now seen corresponding path program 1 times [2021-01-07 05:10:46,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:46,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108927375] [2021-01-07 05:10:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:46,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108927375] [2021-01-07 05:10:46,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:10:46,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:10:46,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540672277] [2021-01-07 05:10:46,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:10:46,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:10:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:10:46,515 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 6 states. [2021-01-07 05:10:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:46,586 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-01-07 05:10:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:10:46,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-07 05:10:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:46,587 INFO L225 Difference]: With dead ends: 9 [2021-01-07 05:10:46,587 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:10:46,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:10:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:10:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:10:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:10:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:10:46,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-01-07 05:10:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:46,589 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:10:46,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:10:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:10:46,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:10:46,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:10:46,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:10:46 BoogieIcfgContainer [2021-01-07 05:10:46,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:10:46,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:10:46,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:10:46,596 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:10:46,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:10:44" (3/4) ... [2021-01-07 05:10:46,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:10:46,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-01-07 05:10:46,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:10:46,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:10:46,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-07 05:10:46,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety/test-0158-1.i-witness.graphml [2021-01-07 05:10:46,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:10:46,652 INFO L168 Benchmark]: Toolchain (without parser) took 2997.73 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 117.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,653 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:10:46,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.97 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 106.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.17 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 136.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,655 INFO L168 Benchmark]: Boogie Preprocessor took 45.01 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 135.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,655 INFO L168 Benchmark]: RCFGBuilder took 586.41 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 119.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,656 INFO L168 Benchmark]: TraceAbstraction took 1615.52 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 119.8 MB in the end (delta: -1.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:10:46,657 INFO L168 Benchmark]: Witness Printer took 54.25 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 117.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:10:46,660 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 153.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 605.97 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 106.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 79.17 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 136.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.01 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 135.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 586.41 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 119.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1615.52 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 119.8 MB in the end (delta: -1.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 54.25 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 117.7 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: - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 61 SDslu, 10 SDs, 0 SdLazy, 83 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1786 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...