/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-ext3/scopes4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:36:22,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:36:22,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:36:22,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 17:36:22,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:36:22,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:36:22,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:36:22,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:36:22,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:36:22,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:36:22,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:36:22,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:36:22,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:36:22,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:36:22,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:36:22,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:36:22,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:36:22,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:36:22,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:36:22,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:36:22,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:36:22,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:36:22,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:36:22,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:36:22,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:36:22,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:36:22,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:36:22,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:36:22,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:36:22,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:36:22,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:36:22,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:36:22,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:36:22,812 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:36:22,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:36:22,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:36:22,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:36:22,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:36:22,813 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:36:22,814 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:36:22,814 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:36:22,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:36:22,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:36:22,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:36:22,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:36:22,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:36:22,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:36:22,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:36:22,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:36:22,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:36:22,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:36:22,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:36:22,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:36:22,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:36:23,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:36:23,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:36:23,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:36:23,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:36:23,202 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:36:23,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-12-23 17:36:23,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14940801f/04d96154ad2d40bc833b44e57a455aa2/FLAG226d79ba3 [2020-12-23 17:36:23,883 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:36:23,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-12-23 17:36:23,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14940801f/04d96154ad2d40bc833b44e57a455aa2/FLAG226d79ba3 [2020-12-23 17:36:24,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14940801f/04d96154ad2d40bc833b44e57a455aa2 [2020-12-23 17:36:24,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:36:24,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:36:24,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:24,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:36:24,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:36:24,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e59f8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24, skipping insertion in model container [2020-12-23 17:36:24,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:36:24,301 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~arr~0,GLOBAL],[IntegerLiteral[194]]] [2020-12-23 17:36:24,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:24,473 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#arr~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[776],StructAccessExpression[IdentifierExpression[~#arr~0,GLOBAL],offset]]]] [2020-12-23 17:36:24,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:24,512 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:36:24,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24 WrapperNode [2020-12-23 17:36:24,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:24,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:24,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:36:24,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:36:24,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:24,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:36:24,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:36:24,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:36:24,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... [2020-12-23 17:36:24,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:36:24,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:36:24,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:36:24,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:36:24,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:36:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:36:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:36:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:36:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:36:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:36:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:36:24,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:36:24,988 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 17:36:24,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:24 BoogieIcfgContainer [2020-12-23 17:36:24,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:36:24,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:36:24,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:36:24,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:36:24,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:36:24" (1/3) ... [2020-12-23 17:36:24,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f283bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:24, skipping insertion in model container [2020-12-23 17:36:24,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:24" (2/3) ... [2020-12-23 17:36:24,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f283bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:24, skipping insertion in model container [2020-12-23 17:36:24,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:24" (3/3) ... [2020-12-23 17:36:25,000 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-1.c [2020-12-23 17:36:25,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:36:25,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 17:36:25,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 17:36:25,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:36:25,064 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:36:25,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:36:25,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:36:25,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:36:25,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:36:25,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:36:25,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:36:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 17:36:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:36:25,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:25,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:36:25,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:25,098 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 17:36:25,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:25,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451630601] [2020-12-23 17:36:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:25,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451630601] [2020-12-23 17:36:25,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:25,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 17:36:25,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084147768] [2020-12-23 17:36:25,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:25,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:25,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:25,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:25,349 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-12-23 17:36:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:25,397 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-12-23 17:36:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:25,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:36:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:25,408 INFO L225 Difference]: With dead ends: 15 [2020-12-23 17:36:25,409 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 17:36:25,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 17:36:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 17:36:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 17:36:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-23 17:36:25,445 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2020-12-23 17:36:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:25,445 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-23 17:36:25,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-23 17:36:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:36:25,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:25,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:36:25,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:36:25,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:25,448 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 17:36:25,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:25,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340216243] [2020-12-23 17:36:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:25,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340216243] [2020-12-23 17:36:25,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:25,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 17:36:25,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017269014] [2020-12-23 17:36:25,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:25,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:25,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:25,511 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-12-23 17:36:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:25,525 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-23 17:36:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:25,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:36:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:25,527 INFO L225 Difference]: With dead ends: 12 [2020-12-23 17:36:25,527 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 17:36:25,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 17:36:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 17:36:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 17:36:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-23 17:36:25,531 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2020-12-23 17:36:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:25,532 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-23 17:36:25,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-23 17:36:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:36:25,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:25,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:25,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:36:25,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025956, now seen corresponding path program 1 times [2020-12-23 17:36:25,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:25,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688192433] [2020-12-23 17:36:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:25,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688192433] [2020-12-23 17:36:25,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:25,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:36:25,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718103704] [2020-12-23 17:36:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:36:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:36:25,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:36:25,677 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 6 states. [2020-12-23 17:36:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:25,818 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-23 17:36:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:36:25,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-23 17:36:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:25,822 INFO L225 Difference]: With dead ends: 11 [2020-12-23 17:36:25,822 INFO L226 Difference]: Without dead ends: 11 [2020-12-23 17:36:25,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:36:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-23 17:36:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-23 17:36:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-23 17:36:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-23 17:36:25,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2020-12-23 17:36:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:25,833 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-23 17:36:25,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:36:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-23 17:36:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:36:25,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:25,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:25,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:36:25,840 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025957, now seen corresponding path program 1 times [2020-12-23 17:36:25,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:25,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113846383] [2020-12-23 17:36:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:26,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113846383] [2020-12-23 17:36:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:26,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:36:26,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895044112] [2020-12-23 17:36:26,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:36:26,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:36:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:36:26,075 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-12-23 17:36:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:26,269 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-12-23 17:36:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:36:26,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-23 17:36:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:26,271 INFO L225 Difference]: With dead ends: 10 [2020-12-23 17:36:26,271 INFO L226 Difference]: Without dead ends: 10 [2020-12-23 17:36:26,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:36:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-23 17:36:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-23 17:36:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-23 17:36:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-12-23 17:36:26,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 7 [2020-12-23 17:36:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:26,275 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-12-23 17:36:26,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:36:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-12-23 17:36:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 17:36:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:26,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:26,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:36:26,276 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1836122917, now seen corresponding path program 1 times [2020-12-23 17:36:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:26,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713840417] [2020-12-23 17:36:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713840417] [2020-12-23 17:36:26,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:26,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444074272] [2020-12-23 17:36:26,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:26,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:26,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:26,319 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 3 states. [2020-12-23 17:36:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:26,329 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-12-23 17:36:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:26,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 17:36:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:26,333 INFO L225 Difference]: With dead ends: 9 [2020-12-23 17:36:26,333 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:36:26,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:36:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:36:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:36:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:36:26,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-23 17:36:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:26,335 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:36:26,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:36:26,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:36:26,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:36:26,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:36:26 BoogieIcfgContainer [2020-12-23 17:36:26,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:36:26,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:36:26,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:36:26,342 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:36:26,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:24" (3/4) ... [2020-12-23 17:36:26,346 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:36:26,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-23 17:36:26,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:36:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 17:36:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:36:26,398 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/scopes4-1.c-witness.graphml [2020-12-23 17:36:26,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:36:26,400 INFO L168 Benchmark]: Toolchain (without parser) took 2139.77 ms. Allocated memory was 164.6 MB in the beginning and 208.7 MB in the end (delta: 44.0 MB). Free memory was 118.8 MB in the beginning and 170.7 MB in the end (delta: -51.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:26,401 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:26,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.01 ms. Allocated memory is still 164.6 MB. Free memory was 118.7 MB in the beginning and 109.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.52 ms. Allocated memory is still 164.6 MB. Free memory was 109.5 MB in the beginning and 147.6 MB in the end (delta: -38.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,403 INFO L168 Benchmark]: Boogie Preprocessor took 25.87 ms. Allocated memory is still 164.6 MB. Free memory was 147.6 MB in the beginning and 146.9 MB in the end (delta: 743.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,403 INFO L168 Benchmark]: RCFGBuilder took 379.55 ms. Allocated memory is still 164.6 MB. Free memory was 146.9 MB in the beginning and 137.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,404 INFO L168 Benchmark]: TraceAbstraction took 1349.35 ms. Allocated memory was 164.6 MB in the beginning and 208.7 MB in the end (delta: 44.0 MB). Free memory was 137.4 MB in the beginning and 172.8 MB in the end (delta: -35.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,405 INFO L168 Benchmark]: Witness Printer took 56.15 ms. Allocated memory is still 208.7 MB. Free memory was 172.8 MB in the beginning and 170.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:26,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.01 ms. Allocated memory is still 164.6 MB. Free memory was 118.7 MB in the beginning and 109.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 68.52 ms. Allocated memory is still 164.6 MB. Free memory was 109.5 MB in the beginning and 147.6 MB in the end (delta: -38.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.87 ms. Allocated memory is still 164.6 MB. Free memory was 147.6 MB in the beginning and 146.9 MB in the end (delta: 743.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 379.55 ms. Allocated memory is still 164.6 MB. Free memory was 146.9 MB in the beginning and 137.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1349.35 ms. Allocated memory was 164.6 MB in the beginning and 208.7 MB in the end (delta: 44.0 MB). Free memory was 137.4 MB in the beginning and 172.8 MB in the end (delta: -35.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. * Witness Printer took 56.15 ms. Allocated memory is still 208.7 MB. Free memory was 172.8 MB in the beginning and 170.7 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: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 62 SDslu, 0 SDs, 0 SdLazy, 52 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...