/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/realloc1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:36:11,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:36:11,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:36:11,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:36:11,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:36:11,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:36:11,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:36:11,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:36:11,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:36:11,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:36:11,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:36:11,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:36:11,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:36:11,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:36:11,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:36:11,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:36:11,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:36:11,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:36:11,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:36:11,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:36:11,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:36:11,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:36:11,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:36:11,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:36:11,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:36:11,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:36:11,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:36:11,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:36:11,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:36:11,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:36:11,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:36:11,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:36:11,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:36:11,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:36:11,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:36:11,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:36:11,580 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 17:36:11,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:36:11,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:36:11,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:36:11,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:36:11,629 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:36:11,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:36:11,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:36:11,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:36:11,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:36:11,630 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:36:11,631 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:36:11,631 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:36:11,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:36:11,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:36:11,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:36:11,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:36:11,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:36:11,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:36:11,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:36:11,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:36:11,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:36:11,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:36:11,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:36:11,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:36:11,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:36:12,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:36:12,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:36:12,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:36:12,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:36:12,080 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:36:12,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-12-23 17:36:12,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/40f6ab873/4f6ba4f9c183431da98db8698e694b4f/FLAGc0c39a550 [2020-12-23 17:36:12,791 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:36:12,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-12-23 17:36:12,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/40f6ab873/4f6ba4f9c183431da98db8698e694b4f/FLAGc0c39a550 [2020-12-23 17:36:13,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/40f6ab873/4f6ba4f9c183431da98db8698e694b4f [2020-12-23 17:36:13,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:36:13,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:36:13,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:13,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:36:13,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:36:13,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672098f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13, skipping insertion in model container [2020-12-23 17:36:13,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:36:13,220 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~p~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:36:13,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:13,456 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~p~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:36:13,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:36:13,493 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:36:13,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13 WrapperNode [2020-12-23 17:36:13,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:36:13,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:13,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:36:13,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:36:13,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:36:13,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:36:13,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:36:13,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:36:13,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (1/1) ... [2020-12-23 17:36:13,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:36:13,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:36:13,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:36:13,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:36:13,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (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 17:36:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:36:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:36:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:36:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:36:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:36:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:36:14,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:36:14,050 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 17:36:14,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:14 BoogieIcfgContainer [2020-12-23 17:36:14,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:36:14,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:36:14,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:36:14,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:36:14,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:36:13" (1/3) ... [2020-12-23 17:36:14,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae7fe44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:14, skipping insertion in model container [2020-12-23 17:36:14,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:13" (2/3) ... [2020-12-23 17:36:14,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae7fe44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:14, skipping insertion in model container [2020-12-23 17:36:14,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:14" (3/3) ... [2020-12-23 17:36:14,087 INFO L111 eAbstractionObserver]: Analyzing ICFG realloc1.c [2020-12-23 17:36:14,094 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:36:14,100 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-23 17:36:14,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-23 17:36:14,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:36:14,170 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:36:14,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:36:14,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:36:14,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:36:14,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:36:14,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:36:14,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:36:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-23 17:36:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:36:14,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:36:14,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash 926021, now seen corresponding path program 1 times [2020-12-23 17:36:14,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719805683] [2020-12-23 17:36:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,415 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 17:36:14,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719805683] [2020-12-23 17:36:14,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:14,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:14,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625335148] [2020-12-23 17:36:14,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:36:14,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:36:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:36:14,449 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-23 17:36:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:14,464 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-23 17:36:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:36:14,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-23 17:36:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:14,475 INFO L225 Difference]: With dead ends: 25 [2020-12-23 17:36:14,475 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 17:36:14,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:36:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 17:36:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 17:36:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 17:36:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 17:36:14,514 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2020-12-23 17:36:14,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:14,515 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 17:36:14,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:36:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 17:36:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:36:14,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:36:14,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:36:14,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 925711, now seen corresponding path program 1 times [2020-12-23 17:36:14,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637596671] [2020-12-23 17:36:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,562 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 17:36:14,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637596671] [2020-12-23 17:36:14,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:14,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:36:14,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967214681] [2020-12-23 17:36:14,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:14,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:14,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:14,567 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-12-23 17:36:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:14,592 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-12-23 17:36:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:14,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 17:36:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:14,594 INFO L225 Difference]: With dead ends: 29 [2020-12-23 17:36:14,594 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 17:36:14,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:36:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 17:36:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-12-23 17:36:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 17:36:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-23 17:36:14,601 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 4 [2020-12-23 17:36:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:14,601 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-23 17:36:14,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-23 17:36:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:36:14,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:36:14,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:36:14,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,603 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-23 17:36:14,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096189235] [2020-12-23 17:36:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,635 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 17:36:14,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096189235] [2020-12-23 17:36:14,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:14,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:14,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191529884] [2020-12-23 17:36:14,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:14,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:14,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:14,638 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2020-12-23 17:36:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:14,676 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-23 17:36:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:14,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 17:36:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:14,677 INFO L225 Difference]: With dead ends: 26 [2020-12-23 17:36:14,677 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 17:36:14,678 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 17:36:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 17:36:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-12-23 17:36:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 17:36:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-23 17:36:14,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2020-12-23 17:36:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:14,683 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-23 17:36:14,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-23 17:36:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:36:14,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:36:14,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:36:14,684 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,685 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-23 17:36:14,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924269468] [2020-12-23 17:36:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,733 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 17:36:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924269468] [2020-12-23 17:36:14,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:14,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745209477] [2020-12-23 17:36:14,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:14,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:14,736 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-12-23 17:36:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:14,795 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-23 17:36:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:14,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 17:36:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:14,796 INFO L225 Difference]: With dead ends: 25 [2020-12-23 17:36:14,797 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 17:36:14,797 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 17:36:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 17:36:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-23 17:36:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 17:36:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 17:36:14,802 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2020-12-23 17:36:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:14,802 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 17:36:14,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 17:36:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:36:14,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:14,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:36:14,804 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash 264435858, now seen corresponding path program 1 times [2020-12-23 17:36:14,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242936641] [2020-12-23 17:36:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:36:14,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242936641] [2020-12-23 17:36:14,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:36:14,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:36:14,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768837884] [2020-12-23 17:36:14,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:14,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:14,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:14,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:36:14,843 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-12-23 17:36:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:14,857 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-23 17:36:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:14,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 17:36:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:14,858 INFO L225 Difference]: With dead ends: 25 [2020-12-23 17:36:14,858 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 17:36:14,859 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 17:36:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 17:36:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-23 17:36:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 17:36:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-23 17:36:14,863 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2020-12-23 17:36:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:14,864 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-23 17:36:14,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-23 17:36:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:36:14,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:14,865 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:14,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:36:14,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:14,866 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2020-12-23 17:36:14,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:14,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323201378] [2020-12-23 17:36:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:14,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323201378] [2020-12-23 17:36:14,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591831452] [2020-12-23 17:36:14,988 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 [2020-12-23 17:36:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:15,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 17:36:15,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:15,145 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 [2020-12-23 17:36:15,147 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:36:15,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:36:15,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:36:15,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:36:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:15,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:15,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-23 17:36:15,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833639034] [2020-12-23 17:36:15,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:36:15,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:36:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:36:15,200 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-12-23 17:36:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:15,325 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-12-23 17:36:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:36:15,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 17:36:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:15,328 INFO L225 Difference]: With dead ends: 30 [2020-12-23 17:36:15,329 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 17:36:15,329 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 [2020-12-23 17:36:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 17:36:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-12-23 17:36:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 17:36:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-12-23 17:36:15,340 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2020-12-23 17:36:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:15,340 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-12-23 17:36:15,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:36:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-12-23 17:36:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:36:15,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:15,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-12-23 17:36:15,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 17:36:15,543 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:15,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1401693725, now seen corresponding path program 1 times [2020-12-23 17:36:15,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:15,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779713091] [2020-12-23 17:36:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:15,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779713091] [2020-12-23 17:36:15,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772496944] [2020-12-23 17:36:15,651 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 [2020-12-23 17:36:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:15,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 17:36:15,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:15,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:15,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 17:36:15,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522610888] [2020-12-23 17:36:15,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:36:15,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:36:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:36:15,801 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-12-23 17:36:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:15,854 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-23 17:36:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:36:15,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-23 17:36:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:15,856 INFO L225 Difference]: With dead ends: 34 [2020-12-23 17:36:15,856 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 17:36:15,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:36:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 17:36:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-23 17:36:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 17:36:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 17:36:15,870 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-12-23 17:36:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:15,871 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 17:36:15,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:36:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 17:36:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:36:15,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:15,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-12-23 17:36:16,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:16,074 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:16,075 INFO L82 PathProgramCache]: Analyzing trace with hash 519338618, now seen corresponding path program 2 times [2020-12-23 17:36:16,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:16,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6993587] [2020-12-23 17:36:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:16,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6993587] [2020-12-23 17:36:16,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72760061] [2020-12-23 17:36:16,192 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 [2020-12-23 17:36:16,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 17:36:16,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 17:36:16,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 17:36:16,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:36:16,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2020-12-23 17:36:16,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057652166] [2020-12-23 17:36:16,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:36:16,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:16,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:36:16,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:36:16,270 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 3 states. [2020-12-23 17:36:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:16,285 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-23 17:36:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:36:16,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:36:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:16,286 INFO L225 Difference]: With dead ends: 33 [2020-12-23 17:36:16,286 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 17:36:16,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:36:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 17:36:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-12-23 17:36:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 17:36:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-23 17:36:16,291 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2020-12-23 17:36:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:16,292 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-23 17:36:16,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:36:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-23 17:36:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:36:16,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:16,293 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:16,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:16,508 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash 868207325, now seen corresponding path program 1 times [2020-12-23 17:36:16,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:16,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251396200] [2020-12-23 17:36:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:16,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251396200] [2020-12-23 17:36:16,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944223227] [2020-12-23 17:36:16,599 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:16,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:36:16,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:16,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:16,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 17:36:16,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224103919] [2020-12-23 17:36:16,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:36:16,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:16,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:36:16,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:36:16,696 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-12-23 17:36:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:16,729 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-23 17:36:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:36:16,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 17:36:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:16,731 INFO L225 Difference]: With dead ends: 37 [2020-12-23 17:36:16,731 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 17:36:16,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:36:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 17:36:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-12-23 17:36:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 17:36:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-23 17:36:16,736 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2020-12-23 17:36:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:16,736 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-23 17:36:16,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:36:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-23 17:36:16,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:36:16,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:16,738 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:16,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:16,953 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:16,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1807964806, now seen corresponding path program 2 times [2020-12-23 17:36:16,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:16,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379535114] [2020-12-23 17:36:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:17,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379535114] [2020-12-23 17:36:17,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334697641] [2020-12-23 17:36:17,031 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:17,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:36:17,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:17,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:36:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:17,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:17,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-23 17:36:17,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088794825] [2020-12-23 17:36:17,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:36:17,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:17,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:36:17,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:36:17,144 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2020-12-23 17:36:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:17,191 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-23 17:36:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:36:17,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-23 17:36:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:17,193 INFO L225 Difference]: With dead ends: 41 [2020-12-23 17:36:17,193 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 17:36:17,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:36:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 17:36:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-12-23 17:36:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 17:36:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-12-23 17:36:17,198 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 27 [2020-12-23 17:36:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:17,198 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-12-23 17:36:17,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:36:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-12-23 17:36:17,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:36:17,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:17,199 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:17,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 17:36:17,413 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1600186775, now seen corresponding path program 3 times [2020-12-23 17:36:17,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:17,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199387692] [2020-12-23 17:36:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:17,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199387692] [2020-12-23 17:36:17,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304958248] [2020-12-23 17:36:17,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:17,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 17:36:17,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:36:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:17,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:17,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-23 17:36:17,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425287931] [2020-12-23 17:36:17,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:36:17,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:36:17,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:36:17,708 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2020-12-23 17:36:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:17,760 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-12-23 17:36:17,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:36:17,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 17:36:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:17,762 INFO L225 Difference]: With dead ends: 45 [2020-12-23 17:36:17,762 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:36:17,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:36:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:36:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-12-23 17:36:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 17:36:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-12-23 17:36:17,767 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2020-12-23 17:36:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:17,768 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-12-23 17:36:17,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:36:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-12-23 17:36:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:36:17,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:17,769 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:17,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:17,983 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1201940684, now seen corresponding path program 4 times [2020-12-23 17:36:17,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:17,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769332797] [2020-12-23 17:36:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:18,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769332797] [2020-12-23 17:36:18,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095558098] [2020-12-23 17:36:18,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:18,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 17:36:18,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:18,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 17:36:18,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:18,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:18,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-23 17:36:18,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865485674] [2020-12-23 17:36:18,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:36:18,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:36:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:36:18,254 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2020-12-23 17:36:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:18,310 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-12-23 17:36:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 17:36:18,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-12-23 17:36:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:18,311 INFO L225 Difference]: With dead ends: 49 [2020-12-23 17:36:18,312 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 17:36:18,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:36:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 17:36:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-12-23 17:36:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:36:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 17:36:18,316 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 35 [2020-12-23 17:36:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:18,317 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 17:36:18,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:36:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 17:36:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 17:36:18,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:18,318 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:18,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:18,533 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 415018577, now seen corresponding path program 5 times [2020-12-23 17:36:18,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:18,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509173431] [2020-12-23 17:36:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509173431] [2020-12-23 17:36:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103825609] [2020-12-23 17:36:18,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:18,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-23 17:36:18,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:18,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:36:18,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:18,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:18,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-23 17:36:18,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553836984] [2020-12-23 17:36:18,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:36:18,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:18,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:36:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:36:18,851 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 12 states. [2020-12-23 17:36:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:18,907 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-23 17:36:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:36:18,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-12-23 17:36:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:18,910 INFO L225 Difference]: With dead ends: 53 [2020-12-23 17:36:18,910 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 17:36:18,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:36:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 17:36:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-12-23 17:36:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:36:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-23 17:36:18,915 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 39 [2020-12-23 17:36:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:18,915 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-23 17:36:18,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:36:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-23 17:36:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 17:36:18,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:18,916 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:19,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 17:36:19,126 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash 544386798, now seen corresponding path program 6 times [2020-12-23 17:36:19,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:19,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945945092] [2020-12-23 17:36:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:19,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945945092] [2020-12-23 17:36:19,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143603798] [2020-12-23 17:36:19,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:19,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-23 17:36:19,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:19,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 17:36:19,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:19,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:19,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-23 17:36:19,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136842327] [2020-12-23 17:36:19,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:36:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:36:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:36:19,439 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 13 states. [2020-12-23 17:36:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:19,502 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-23 17:36:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:36:19,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-12-23 17:36:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:19,504 INFO L225 Difference]: With dead ends: 54 [2020-12-23 17:36:19,504 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 17:36:19,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:36:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 17:36:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-23 17:36:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 17:36:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-23 17:36:19,514 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 43 [2020-12-23 17:36:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:19,514 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-23 17:36:19,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:36:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-23 17:36:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 17:36:19,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:19,516 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:19,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:19,731 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 17:36:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:19,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1707940107, now seen corresponding path program 7 times [2020-12-23 17:36:19,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:19,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914319956] [2020-12-23 17:36:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:19,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:19,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:19,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:36:19,815 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:36:19,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:36:19,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:36:19 BoogieIcfgContainer [2020-12-23 17:36:19,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:36:19,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:36:19,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:36:19,856 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:36:19,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:14" (3/4) ... [2020-12-23 17:36:19,859 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 17:36:19,951 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/realloc1.c-witness.graphml [2020-12-23 17:36:19,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:36:19,953 INFO L168 Benchmark]: Toolchain (without parser) took 6777.55 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.6 MB in the beginning and 94.1 MB in the end (delta: 32.5 MB). Peak memory consumption was 69.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,954 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:19,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,958 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,959 INFO L168 Benchmark]: RCFGBuilder took 479.27 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 100.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,959 INFO L168 Benchmark]: TraceAbstraction took 5800.45 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.4 MB in the beginning and 96.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,959 INFO L168 Benchmark]: Witness Printer took 95.74 ms. Allocated memory is still 186.6 MB. Free memory was 96.6 MB in the beginning and 94.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:19,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 479.27 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 100.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5800.45 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.4 MB in the beginning and 96.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Witness Printer took 95.74 ms. Allocated memory is still 186.6 MB. Free memory was 96.6 MB in the beginning and 94.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND FALSE !(i < 10) [L14] free(p) [L14] free(p) [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 15, TraceHistogramMax: 10, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 215 SDslu, 722 SDs, 0 SdLazy, 334 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=14, 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, 14 MinimizatonAttempts, 38 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 559 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 39596 SizeOfPredicates, 3 NumberOfNonLiveVariables, 734 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 29/1097 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...