/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/list-ext-properties/test-0158_1-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:20:08,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:20:08,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:20:08,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:20:08,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:20:08,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:20:08,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:20:08,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:20:08,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:20:08,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:20:08,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:20:08,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:20:08,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:20:08,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:20:08,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:20:08,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:20:08,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:20:08,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:20:08,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:20:08,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:20:08,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:20:08,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:20:08,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:20:08,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:20:08,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:20:08,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:20:08,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:20:08,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:20:08,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:20:08,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:20:08,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:20:08,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:20:08,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:20:08,527 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:20:08,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:20:08,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:20:08,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:20:08,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:20:08,528 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:20:08,529 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:20:08,529 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:20:08,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:20:08,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:20:08,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:20:08,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:20:08,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:20:08,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:20:08,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:20:08,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:20:08,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:20:08,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:20:08,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:20:08,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:20:08,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:20:08,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:20:08,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:20:08,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:20:08,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:20:08,941 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:20:08,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-01-07 05:20:09,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4118ae9/0fc6946ca3094cf1aa3965ce3b73b9fb/FLAGe92a482b2 [2021-01-07 05:20:09,699 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:20:09,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-01-07 05:20:09,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4118ae9/0fc6946ca3094cf1aa3965ce3b73b9fb/FLAGe92a482b2 [2021-01-07 05:20:10,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4118ae9/0fc6946ca3094cf1aa3965ce3b73b9fb [2021-01-07 05:20:10,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:20:10,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:20:10,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:20:10,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:20:10,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:20:10,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4308f96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10, skipping insertion in model container [2021-01-07 05:20:10,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:20:10,069 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~data~0,],p0] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~data~0,],str],p2] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~data~0,],str],p2] left hand side expression in assignment: lhs: ArrayLHS[StructLHS[StructLHS[VariableLHS[~data~0,],str],c],[IntegerLiteral[1]]] [2021-01-07 05:20:10,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:20:10,421 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[6],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[6],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[1],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]]] [2021-01-07 05:20:10,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:20:10,583 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:20:10,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10 WrapperNode [2021-01-07 05:20:10,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:20:10,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:20:10,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:20:10,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:20:10,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:20:10,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:20:10,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:20:10,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:20:10,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... [2021-01-07 05:20:10,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:20:10,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:20:10,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:20:10,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:20:10,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:20:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:20:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:20:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:20:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:20:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:20:11,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:20:11,221 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-07 05:20:11,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:20:11 BoogieIcfgContainer [2021-01-07 05:20:11,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:20:11,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:20:11,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:20:11,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:20:11,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:20:10" (1/3) ... [2021-01-07 05:20:11,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bae83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:20:11, skipping insertion in model container [2021-01-07 05:20:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:20:10" (2/3) ... [2021-01-07 05:20:11,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bae83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:20:11, skipping insertion in model container [2021-01-07 05:20:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:20:11" (3/3) ... [2021-01-07 05:20:11,233 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2021-01-07 05:20:11,240 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:20:11,245 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2021-01-07 05:20:11,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-01-07 05:20:11,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:20:11,288 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:20:11,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:20:11,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:20:11,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:20:11,289 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:20:11,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:20:11,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:20:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-01-07 05:20:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:20:11,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:11,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:20:11,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-01-07 05:20:11,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:11,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329137043] [2021-01-07 05:20:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:11,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329137043] [2021-01-07 05:20:11,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:11,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:20:11,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850275577] [2021-01-07 05:20:11,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:20:11,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:11,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:20:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:20:11,577 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2021-01-07 05:20:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:11,693 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-01-07 05:20:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:20:11,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:20:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:11,705 INFO L225 Difference]: With dead ends: 35 [2021-01-07 05:20:11,705 INFO L226 Difference]: Without dead ends: 33 [2021-01-07 05:20:11,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:20:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-07 05:20:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-07 05:20:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-07 05:20:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-01-07 05:20:11,743 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 3 [2021-01-07 05:20:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:11,743 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-01-07 05:20:11,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:20:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-01-07 05:20:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:20:11,744 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:11,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:20:11,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:20:11,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-01-07 05:20:11,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:11,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942852952] [2021-01-07 05:20:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:11,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942852952] [2021-01-07 05:20:11,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:11,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:20:11,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194480274] [2021-01-07 05:20:11,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:20:11,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:11,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:20:11,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:20:11,820 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 3 states. [2021-01-07 05:20:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:11,869 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-01-07 05:20:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:20:11,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:20:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:11,871 INFO L225 Difference]: With dead ends: 26 [2021-01-07 05:20:11,871 INFO L226 Difference]: Without dead ends: 26 [2021-01-07 05:20:11,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:20:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-07 05:20:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-07 05:20:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-07 05:20:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-01-07 05:20:11,877 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 3 [2021-01-07 05:20:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:11,878 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-01-07 05:20:11,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:20:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-01-07 05:20:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:20:11,879 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:11,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:11,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:20:11,879 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash 377191761, now seen corresponding path program 1 times [2021-01-07 05:20:11,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:11,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109198264] [2021-01-07 05:20:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:11,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109198264] [2021-01-07 05:20:12,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:12,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:20:12,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791250511] [2021-01-07 05:20:12,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:20:12,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:20:12,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:20:12,007 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2021-01-07 05:20:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:12,144 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-01-07 05:20:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:20:12,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-07 05:20:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:12,147 INFO L225 Difference]: With dead ends: 25 [2021-01-07 05:20:12,148 INFO L226 Difference]: Without dead ends: 25 [2021-01-07 05:20:12,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:20:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-07 05:20:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-07 05:20:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:20:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-01-07 05:20:12,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 11 [2021-01-07 05:20:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:12,166 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-01-07 05:20:12,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:20:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-01-07 05:20:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:20:12,168 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:12,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:12,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:20:12,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1191957227, now seen corresponding path program 1 times [2021-01-07 05:20:12,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:12,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95257462] [2021-01-07 05:20:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:12,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95257462] [2021-01-07 05:20:12,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:12,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:20:12,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809647566] [2021-01-07 05:20:12,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:20:12,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:12,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:20:12,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:20:12,362 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2021-01-07 05:20:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:12,496 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-01-07 05:20:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:20:12,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-07 05:20:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:12,498 INFO L225 Difference]: With dead ends: 24 [2021-01-07 05:20:12,498 INFO L226 Difference]: Without dead ends: 24 [2021-01-07 05:20:12,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:20:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-07 05:20:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-07 05:20:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-07 05:20:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-01-07 05:20:12,502 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2021-01-07 05:20:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:12,503 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-01-07 05:20:12,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:20:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-01-07 05:20:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:20:12,504 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:12,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:12,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:20:12,505 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:12,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:12,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1704031699, now seen corresponding path program 1 times [2021-01-07 05:20:12,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:12,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287665059] [2021-01-07 05:20:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:12,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287665059] [2021-01-07 05:20:12,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:12,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:20:12,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202388897] [2021-01-07 05:20:12,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:20:12,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:12,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:20:12,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:20:12,595 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2021-01-07 05:20:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:12,716 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-01-07 05:20:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:20:12,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-07 05:20:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:12,718 INFO L225 Difference]: With dead ends: 23 [2021-01-07 05:20:12,718 INFO L226 Difference]: Without dead ends: 23 [2021-01-07 05:20:12,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:20:12,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-07 05:20:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-07 05:20:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:20:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-01-07 05:20:12,723 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2021-01-07 05:20:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:12,723 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-01-07 05:20:12,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:20:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-01-07 05:20:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:20:12,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:12,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:12,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:20:12,725 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:12,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1285375191, now seen corresponding path program 1 times [2021-01-07 05:20:12,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:12,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656191297] [2021-01-07 05:20:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:12,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656191297] [2021-01-07 05:20:12,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:12,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:20:12,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46679354] [2021-01-07 05:20:12,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:20:12,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:12,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:20:12,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:20:12,827 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2021-01-07 05:20:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:12,947 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-01-07 05:20:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:20:12,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-07 05:20:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:12,949 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:20:12,949 INFO L226 Difference]: Without dead ends: 22 [2021-01-07 05:20:12,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:20:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-07 05:20:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-07 05:20:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-07 05:20:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-01-07 05:20:12,953 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-01-07 05:20:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:12,953 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-01-07 05:20:12,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:20:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-01-07 05:20:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:20:12,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:12,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:12,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:20:12,955 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1191925333, now seen corresponding path program 1 times [2021-01-07 05:20:12,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:12,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619654126] [2021-01-07 05:20:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:20:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:20:13,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619654126] [2021-01-07 05:20:13,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:20:13,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:20:13,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510719332] [2021-01-07 05:20:13,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:20:13,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:20:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:20:13,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:20:13,054 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2021-01-07 05:20:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:13,195 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-01-07 05:20:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:20:13,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-07 05:20:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:13,197 INFO L225 Difference]: With dead ends: 21 [2021-01-07 05:20:13,197 INFO L226 Difference]: Without dead ends: 21 [2021-01-07 05:20:13,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:20:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-07 05:20:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-01-07 05:20:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-07 05:20:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-01-07 05:20:13,200 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2021-01-07 05:20:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:13,200 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-01-07 05:20:13,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:20:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-01-07 05:20:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:20:13,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:20:13,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:20:13,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:20:13,202 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:20:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:20:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1705020263, now seen corresponding path program 1 times [2021-01-07 05:20:13,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:20:13,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213772871] [2021-01-07 05:20:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:20:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:20:13,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:20:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:20:13,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:20:13,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:20:13,262 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:20:13,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:20:13,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:20:13 BoogieIcfgContainer [2021-01-07 05:20:13,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:20:13,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:20:13,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:20:13,292 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:20:13,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:20:11" (3/4) ... [2021-01-07 05:20:13,295 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 05:20:13,338 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext-properties/test-0158_1-3.i-witness.graphml [2021-01-07 05:20:13,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:20:13,340 INFO L168 Benchmark]: Toolchain (without parser) took 3325.71 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 140.0 MB in the beginning and 136.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,341 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 166.7 MB. Free memory is still 138.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:20:13,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.27 ms. Allocated memory is still 166.7 MB. Free memory was 139.9 MB in the beginning and 118.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 166.7 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,343 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 166.7 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,343 INFO L168 Benchmark]: RCFGBuilder took 556.10 ms. Allocated memory is still 166.7 MB. Free memory was 115.3 MB in the beginning and 131.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,344 INFO L168 Benchmark]: TraceAbstraction took 2066.62 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 130.8 MB in the beginning and 138.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,345 INFO L168 Benchmark]: Witness Printer took 45.97 ms. Allocated memory is still 200.3 MB. Free memory was 138.4 MB in the beginning and 136.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:13,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 166.7 MB. Free memory is still 138.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 566.27 ms. Allocated memory is still 166.7 MB. Free memory was 139.9 MB in the beginning and 118.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 166.7 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 166.7 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.10 ms. Allocated memory is still 166.7 MB. Free memory was 115.3 MB in the beginning and 131.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2066.62 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 130.8 MB in the beginning and 138.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. * Witness Printer took 45.97 ms. Allocated memory is still 200.3 MB. Free memory was 138.4 MB in the beginning and 136.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] EXPR data.p0 [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 [L541] EXPR data.str.p2 [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 [L544] free(data.p0) [L544] free(data.p0) [L544] free(data.p0) [L545] free(ptr) [L545] free(ptr) [L545] free(ptr) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 201 SDslu, 73 SDs, 0 SdLazy, 171 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3982 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...