/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/termination-crafted/Arrays03-ValueRestictsIndex-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:08:28,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:08:28,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:08:28,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:08:28,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:08:28,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:08:28,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:08:28,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:08:28,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:08:28,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:08:28,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:08:28,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:08:28,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:08:28,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:08:28,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:08:28,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:08:28,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:08:28,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:08:28,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:08:28,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:08:28,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:08:28,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:08:28,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:08:28,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:08:28,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:08:28,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:08:28,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:08:28,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:08:28,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:08:28,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:08:28,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:08:28,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:08:28,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:08:28,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:08:28,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:08:28,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:08:28,976 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 05:08:29,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:08:29,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:08:29,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:08:29,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:08:29,037 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:08:29,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:08:29,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:08:29,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:08:29,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:08:29,039 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:08:29,039 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:08:29,040 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:08:29,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:08:29,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:08:29,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:08:29,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:08:29,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:08:29,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:08:29,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:29,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:08:29,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:08:29,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:08:29,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:08:29,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:08:29,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:08:29,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:08:29,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:08:29,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:08:29,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:08:29,522 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:08:29,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2021-01-07 05:08:29,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cbd3e8719/cc5946243007409cac358d435b00c5e1/FLAGcc388e1cb [2021-01-07 05:08:30,363 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:08:30,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2021-01-07 05:08:30,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cbd3e8719/cc5946243007409cac358d435b00c5e1/FLAGcc388e1cb [2021-01-07 05:08:30,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cbd3e8719/cc5946243007409cac358d435b00c5e1 [2021-01-07 05:08:30,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:08:30,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:08:30,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:30,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:08:30,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:08:30,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:30,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f110f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30, skipping insertion in model container [2021-01-07 05:08:30,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:30,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:08:30,740 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-07 05:08:30,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:30,924 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-07 05:08:30,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:30,969 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:08:30,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30 WrapperNode [2021-01-07 05:08:30,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:30,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:30,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:08:30,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:08:30,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:30,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:31,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:08:31,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:08:31,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:08:31,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (1/1) ... [2021-01-07 05:08:31,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:08:31,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:08:31,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:08:31,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:08:31,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (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 05:08:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:08:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:08:31,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:08:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:08:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:08:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:08:31,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:08:31,666 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-07 05:08:31,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:31 BoogieIcfgContainer [2021-01-07 05:08:31,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:08:31,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:08:31,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:08:31,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:08:31,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:08:30" (1/3) ... [2021-01-07 05:08:31,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6845c054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:31, skipping insertion in model container [2021-01-07 05:08:31,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:30" (2/3) ... [2021-01-07 05:08:31,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6845c054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:31, skipping insertion in model container [2021-01-07 05:08:31,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:31" (3/3) ... [2021-01-07 05:08:31,685 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2021-01-07 05:08:31,694 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:08:31,700 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-07 05:08:31,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-07 05:08:31,756 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:08:31,756 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:08:31,756 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:08:31,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:08:31,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:08:31,757 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:08:31,757 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:08:31,757 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:08:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-01-07 05:08:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:31,790 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:31,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:31,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:08:31,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:31,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823223068] [2021-01-07 05:08:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:32,047 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 05:08:32,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823223068] [2021-01-07 05:08:32,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:32,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:32,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821050200] [2021-01-07 05:08:32,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:32,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:32,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:32,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:32,083 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2021-01-07 05:08:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:32,154 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-01-07 05:08:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:32,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:32,172 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:08:32,175 INFO L226 Difference]: Without dead ends: 20 [2021-01-07 05:08:32,186 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 05:08:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-07 05:08:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-07 05:08:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-07 05:08:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-01-07 05:08:32,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2021-01-07 05:08:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:32,246 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-01-07 05:08:32,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-01-07 05:08:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:32,248 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:32,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:32,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:08:32,250 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:32,255 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:08:32,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:32,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879304684] [2021-01-07 05:08:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:32,398 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 05:08:32,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879304684] [2021-01-07 05:08:32,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:32,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:32,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381937020] [2021-01-07 05:08:32,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:32,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:32,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:32,408 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2021-01-07 05:08:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:32,507 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-01-07 05:08:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:32,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:32,509 INFO L225 Difference]: With dead ends: 24 [2021-01-07 05:08:32,509 INFO L226 Difference]: Without dead ends: 24 [2021-01-07 05:08:32,510 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 05:08:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-07 05:08:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-01-07 05:08:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-07 05:08:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-01-07 05:08:32,516 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2021-01-07 05:08:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:32,516 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-01-07 05:08:32,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-01-07 05:08:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:08:32,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:32,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:32,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:08:32,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:32,519 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:08:32,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:32,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467260723] [2021-01-07 05:08:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:32,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467260723] [2021-01-07 05:08:32,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535771829] [2021-01-07 05:08:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:32,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:32,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:32,814 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:08:32,815 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:32,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:32,825 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:32,825 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:32,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:32,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-01-07 05:08:32,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987104091] [2021-01-07 05:08:32,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:32,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:32,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:32,867 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2021-01-07 05:08:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:32,929 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-01-07 05:08:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:32,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:08:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:32,931 INFO L225 Difference]: With dead ends: 27 [2021-01-07 05:08:32,931 INFO L226 Difference]: Without dead ends: 27 [2021-01-07 05:08:32,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-07 05:08:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-07 05:08:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:08:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-01-07 05:08:32,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2021-01-07 05:08:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:32,937 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-01-07 05:08:32,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-01-07 05:08:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:08:32,938 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:32,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:33,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:08:33,155 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:33,158 INFO L82 PathProgramCache]: Analyzing trace with hash 502867326, now seen corresponding path program 1 times [2021-01-07 05:08:33,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:33,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653016830] [2021-01-07 05:08:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:33,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653016830] [2021-01-07 05:08:33,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944047685] [2021-01-07 05:08:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:33,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:08:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:33,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:33,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:08:33,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886471594] [2021-01-07 05:08:33,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:33,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:33,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:33,474 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2021-01-07 05:08:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:33,521 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-01-07 05:08:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:33,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-07 05:08:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:33,525 INFO L225 Difference]: With dead ends: 34 [2021-01-07 05:08:33,525 INFO L226 Difference]: Without dead ends: 34 [2021-01-07 05:08:33,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-07 05:08:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-01-07 05:08:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-07 05:08:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-01-07 05:08:33,542 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2021-01-07 05:08:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:33,542 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-01-07 05:08:33,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-01-07 05:08:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:08:33,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:33,544 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:33,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:33,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:33,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1080337215, now seen corresponding path program 2 times [2021-01-07 05:08:33,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:33,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075373736] [2021-01-07 05:08:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:33,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075373736] [2021-01-07 05:08:33,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303049784] [2021-01-07 05:08:33,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:33,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:33,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:33,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:33,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:33,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:33,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:08:33,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507197393] [2021-01-07 05:08:33,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:33,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:33,957 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2021-01-07 05:08:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:33,987 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-01-07 05:08:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:33,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-01-07 05:08:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:33,990 INFO L225 Difference]: With dead ends: 30 [2021-01-07 05:08:33,990 INFO L226 Difference]: Without dead ends: 25 [2021-01-07 05:08:33,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-07 05:08:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-07 05:08:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:08:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-01-07 05:08:34,000 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-01-07 05:08:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:34,000 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-01-07 05:08:34,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-01-07 05:08:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:08:34,002 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:34,002 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:34,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:34,211 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:34,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1145547875, now seen corresponding path program 1 times [2021-01-07 05:08:34,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:34,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446056315] [2021-01-07 05:08:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:34,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446056315] [2021-01-07 05:08:34,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:34,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:08:34,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312228443] [2021-01-07 05:08:34,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:34,327 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2021-01-07 05:08:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:34,334 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-07 05:08:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:34,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-01-07 05:08:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:34,335 INFO L225 Difference]: With dead ends: 24 [2021-01-07 05:08:34,335 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:08:34,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:08:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:08:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:08:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:08:34,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-01-07 05:08:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:34,337 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:08:34,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:08:34,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:08:34,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:08:34,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:08:34 BoogieIcfgContainer [2021-01-07 05:08:34,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:08:34,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:08:34,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:08:34,344 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:08:34,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:31" (3/4) ... [2021-01-07 05:08:34,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:08:34,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-07 05:08:34,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:08:34,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:08:34,403 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c-witness.graphml [2021-01-07 05:08:34,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:08:34,404 INFO L168 Benchmark]: Toolchain (without parser) took 3708.28 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 128.5 MB in the end (delta: -1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:08:34,405 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:08:34,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:34,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 152.0 MB. Free memory was 117.9 MB in the beginning and 116.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:34,406 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 115.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:34,407 INFO L168 Benchmark]: RCFGBuilder took 624.10 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 101.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:34,408 INFO L168 Benchmark]: TraceAbstraction took 2669.87 ms. Allocated memory is still 152.0 MB. Free memory was 100.6 MB in the beginning and 131.1 MB in the end (delta: -30.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:08:34,408 INFO L168 Benchmark]: Witness Printer took 59.14 ms. Allocated memory is still 152.0 MB. Free memory was 131.1 MB in the beginning and 128.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:34,412 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 152.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 152.0 MB. Free memory was 117.9 MB in the beginning and 116.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.71 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 115.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 624.10 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 101.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2669.87 ms. Allocated memory is still 152.0 MB. Free memory was 100.6 MB in the beginning and 131.1 MB in the end (delta: -30.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 59.14 ms. Allocated memory is still 152.0 MB. Free memory was 131.1 MB in the beginning and 128.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 72 SDslu, 93 SDs, 0 SdLazy, 97 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 1 QuantifiedInterpolants, 13979 SizeOfPredicates, 0 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 56/118 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...