/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:12:09,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:12:09,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:12:09,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:12:09,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:12:09,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:12:09,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:12:09,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:12:09,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:12:09,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:12:09,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:12:09,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:12:09,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:12:09,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:12:09,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:12:09,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:12:09,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:12:09,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:12:09,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:12:09,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:12:09,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:12:09,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:12:09,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:12:09,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:12:09,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:12:09,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:12:09,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:12:09,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:12:09,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:12:09,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:12:09,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:12:09,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:12:09,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:12:09,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:12:09,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:12:09,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:12:09,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:12:09,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:12:09,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:12:09,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:12:09,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:12:09,503 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:12:09,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:12:09,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:12:09,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:12:09,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:12:09,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:12:09,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:12:09,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:12:09,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:12:09,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:12:09,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:12:09,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:12:09,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:12:09,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:12:09,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:12:09,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:12:09,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:12:09,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:12:09,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:12:09,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:12:09,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:12:09,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:12:09,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:12:09,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:12:09,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:12:09,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:12:09,958 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:12:09,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test08.c [2021-01-06 16:12:10,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fb7de3667/f27d7b79c12c436facc7aa471797b05a/FLAGad9f31751 [2021-01-06 16:12:10,669 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:12:10,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test08.c [2021-01-06 16:12:10,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fb7de3667/f27d7b79c12c436facc7aa471797b05a/FLAGad9f31751 [2021-01-06 16:12:11,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fb7de3667/f27d7b79c12c436facc7aa471797b05a [2021-01-06 16:12:11,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:12:11,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:12:11,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:11,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:12:11,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:12:11,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340e9748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11, skipping insertion in model container [2021-01-06 16:12:11,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:12:11,084 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~p1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~b~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] [2021-01-06 16:12:11,264 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-01-06 16:12:11,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:11,281 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~p1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~#b~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~#a~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~#a~0,GLOBAL] [2021-01-06 16:12:11,302 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-01-06 16:12:11,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:11,321 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:12:11,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11 WrapperNode [2021-01-06 16:12:11,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:11,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:11,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:12:11,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:12:11,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:11,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:12:11,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:12:11,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:12:11,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (1/1) ... [2021-01-06 16:12:11,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:12:11,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:12:11,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:12:11,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:12:11,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (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 [2021-01-06 16:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:12:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:12:11,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:12:11,837 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-06 16:12:11,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:11 BoogieIcfgContainer [2021-01-06 16:12:11,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:12:11,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:12:11,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:12:11,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:12:11,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:12:11" (1/3) ... [2021-01-06 16:12:11,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d66a832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:11, skipping insertion in model container [2021-01-06 16:12:11,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:11" (2/3) ... [2021-01-06 16:12:11,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d66a832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:11, skipping insertion in model container [2021-01-06 16:12:11,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:11" (3/3) ... [2021-01-06 16:12:11,849 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2021-01-06 16:12:11,856 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:12:11,861 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:12:11,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:12:11,938 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:12:11,939 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:12:11,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:12:11,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:12:11,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:12:11,943 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:12:11,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:12:11,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:12:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2021-01-06 16:12:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:12:11,990 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:12:11,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:12:11,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:12:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:12:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2021-01-06 16:12:12,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:12:12,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047631089] [2021-01-06 16:12:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:12:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:12:12,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:12:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:12:12,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:12:12,423 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:12:12,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:12:12,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:12:12,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:12:12 BoogieIcfgContainer [2021-01-06 16:12:12,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:12:12,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:12:12,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:12:12,463 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:12:12,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:11" (3/4) ... [2021-01-06 16:12:12,466 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 16:12:12,520 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test08.c-witness.graphml [2021-01-06 16:12:12,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:12:12,523 INFO L168 Benchmark]: Toolchain (without parser) took 1479.09 ms. Allocated memory is still 164.6 MB. Free memory was 140.3 MB in the beginning and 136.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,524 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 164.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:12,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.88 ms. Allocated memory is still 164.6 MB. Free memory was 140.1 MB in the beginning and 130.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 164.6 MB. Free memory was 130.5 MB in the beginning and 129.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,527 INFO L168 Benchmark]: Boogie Preprocessor took 22.72 ms. Allocated memory is still 164.6 MB. Free memory was 129.2 MB in the beginning and 128.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,528 INFO L168 Benchmark]: RCFGBuilder took 452.86 ms. Allocated memory is still 164.6 MB. Free memory was 128.1 MB in the beginning and 114.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,528 INFO L168 Benchmark]: TraceAbstraction took 620.45 ms. Allocated memory is still 164.6 MB. Free memory was 114.5 MB in the beginning and 138.6 MB in the end (delta: -24.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:12,529 INFO L168 Benchmark]: Witness Printer took 57.77 ms. Allocated memory is still 164.6 MB. Free memory was 138.6 MB in the beginning and 136.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:12,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 164.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.88 ms. Allocated memory is still 164.6 MB. Free memory was 140.1 MB in the beginning and 130.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 164.6 MB. Free memory was 130.5 MB in the beginning and 129.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.72 ms. Allocated memory is still 164.6 MB. Free memory was 129.2 MB in the beginning and 128.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 452.86 ms. Allocated memory is still 164.6 MB. Free memory was 128.1 MB in the beginning and 114.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 620.45 ms. Allocated memory is still 164.6 MB. Free memory was 114.5 MB in the beginning and 138.6 MB in the end (delta: -24.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 57.77 ms. Allocated memory is still 164.6 MB. Free memory was 138.6 MB in the beginning and 136.5 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: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [a={5:0}, b={3:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] [L29] a = f() [L31] EXPR \read(a) VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] [L31] COND TRUE a && p1 == p2 [L38] reach_error() VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...