/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/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:12:17,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:12:17,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:12:17,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:12:17,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:12:17,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:12:17,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:12:17,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:12:17,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:12:17,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:12:17,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:12:17,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:12:17,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:12:17,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:12:17,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:12:17,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:12:17,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:12:17,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:12:17,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:12:17,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:12:17,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:12:17,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:12:17,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:12:17,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:12:17,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:12:17,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:12:17,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:12:17,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:12:17,714 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 16:12:17,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:12:17,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:12:17,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:12:17,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:12:17,762 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:12:17,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:12:17,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:12:17,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:12:17,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:12:17,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:12:17,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:12:17,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:12:17,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:12:17,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:12:17,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:12:17,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:12:17,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:12:17,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:12:17,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:12:17,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:12:17,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:12:17,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:12:17,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:12:17,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:12:17,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:12:17,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:12:18,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:12:18,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:12:18,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:12:18,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:12:18,228 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:12:18,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test21-1.c [2021-01-06 16:12:18,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/49459f200/3fcb368d3c584be193b1d4a9a1c65e7b/FLAG15db306aa [2021-01-06 16:12:18,931 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:12:18,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-1.c [2021-01-06 16:12:18,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/49459f200/3fcb368d3c584be193b1d4a9a1c65e7b/FLAG15db306aa [2021-01-06 16:12:19,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/49459f200/3fcb368d3c584be193b1d4a9a1c65e7b [2021-01-06 16:12:19,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:12:19,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:12:19,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:19,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:12:19,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:12:19,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64153428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19, skipping insertion in model container [2021-01-06 16:12:19,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:12:19,363 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~d1~0,GLOBAL],a] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~d1~0,GLOBAL],b] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~d2~0,GLOBAL],a] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~d2~0,GLOBAL],b] [2021-01-06 16:12:19,518 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/test21-1.c[892,905] [2021-01-06 16:12:19,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:19,534 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#d1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#d1~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#d1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#d1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#d2~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#d2~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#d2~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#d2~0,GLOBAL],offset]]]] [2021-01-06 16:12:19,554 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/test21-1.c[892,905] [2021-01-06 16:12:19,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:19,574 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:12:19,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19 WrapperNode [2021-01-06 16:12:19,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:19,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:19,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:12:19,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:12:19,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:19,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:12:19,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:12:19,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:12:19,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (1/1) ... [2021-01-06 16:12:19,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:12:19,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:12:19,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:12:19,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:12:19,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (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 16:12:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:12:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:12:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:12:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:12:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:12:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:12:20,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:12:20,248 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-01-06 16:12:20,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:20 BoogieIcfgContainer [2021-01-06 16:12:20,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:12:20,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:12:20,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:12:20,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:12:20,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:12:19" (1/3) ... [2021-01-06 16:12:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537503e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:20, skipping insertion in model container [2021-01-06 16:12:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:19" (2/3) ... [2021-01-06 16:12:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537503e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:20, skipping insertion in model container [2021-01-06 16:12:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:20" (3/3) ... [2021-01-06 16:12:20,273 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2021-01-06 16:12:20,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:12:20,294 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:12:20,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:12:20,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:12:20,401 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:12:20,401 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:12:20,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:12:20,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:12:20,402 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:12:20,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:12:20,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:12:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-01-06 16:12:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:12:20,432 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:12:20,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:12:20,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:12:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:12:20,443 INFO L82 PathProgramCache]: Analyzing trace with hash 167538580, now seen corresponding path program 1 times [2021-01-06 16:12:20,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:12:20,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103951558] [2021-01-06 16:12:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:12:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:12:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:12:20,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103951558] [2021-01-06 16:12:20,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:12:20,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 16:12:20,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828998042] [2021-01-06 16:12:20,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 16:12:20,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:12:20,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 16:12:20,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-06 16:12:20,949 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 10 states. [2021-01-06 16:12:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:12:21,773 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-01-06 16:12:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 16:12:21,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2021-01-06 16:12:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:12:21,783 INFO L225 Difference]: With dead ends: 67 [2021-01-06 16:12:21,784 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:12:21,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:12:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:12:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:12:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:12:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:12:21,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-01-06 16:12:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:12:21,818 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:12:21,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 16:12:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:12:21,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:12:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:12:21,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:12:21,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:12:21,880 INFO L185 CegarLoopUtils]: At program point L29(lines 27 30) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_check_#res|) (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset)) [2021-01-06 16:12:21,880 INFO L189 CegarLoopUtils]: For program point L13(lines 13 20) no Hoare annotation was computed. [2021-01-06 16:12:21,880 INFO L185 CegarLoopUtils]: At program point L38(lines 33 46) the Hoare annotation is: false [2021-01-06 16:12:21,881 INFO L189 CegarLoopUtils]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-01-06 16:12:21,881 INFO L189 CegarLoopUtils]: For program point L36-2(lines 36 40) no Hoare annotation was computed. [2021-01-06 16:12:21,881 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:12:21,882 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:12:21,882 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:12:21,882 INFO L189 CegarLoopUtils]: For program point L24(line 24) no Hoare annotation was computed. [2021-01-06 16:12:21,882 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-01-06 16:12:21,883 INFO L189 CegarLoopUtils]: For program point L24-2(line 24) no Hoare annotation was computed. [2021-01-06 16:12:21,883 INFO L192 CegarLoopUtils]: At program point L24-3(lines 22 25) the Hoare annotation is: true [2021-01-06 16:12:21,883 INFO L189 CegarLoopUtils]: For program point L24-4(line 24) no Hoare annotation was computed. [2021-01-06 16:12:21,883 INFO L189 CegarLoopUtils]: For program point L24-6(line 24) no Hoare annotation was computed. [2021-01-06 16:12:21,883 INFO L192 CegarLoopUtils]: At program point L24-7(lines 22 25) the Hoare annotation is: true [2021-01-06 16:12:21,884 INFO L192 CegarLoopUtils]: At program point L45(lines 32 46) the Hoare annotation is: true [2021-01-06 16:12:21,884 INFO L189 CegarLoopUtils]: For program point L37(lines 37 39) no Hoare annotation was computed. [2021-01-06 16:12:21,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:12:21 BoogieIcfgContainer [2021-01-06 16:12:21,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:12:21,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:12:21,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:12:21,916 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:12:21,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:20" (3/4) ... [2021-01-06 16:12:21,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:12:21,936 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-06 16:12:21,937 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-01-06 16:12:21,937 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:12:21,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:12:21,971 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1 <= \result && pd1 == pd2) && pd2 == pd1 [2021-01-06 16:12:22,015 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test21-1.c-witness.graphml [2021-01-06 16:12:22,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:12:22,018 INFO L168 Benchmark]: Toolchain (without parser) took 2688.43 ms. Allocated memory was 152.0 MB in the beginning and 207.6 MB in the end (delta: 55.6 MB). Free memory was 127.1 MB in the beginning and 183.7 MB in the end (delta: -56.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:22,019 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:22,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.97 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.43 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,021 INFO L168 Benchmark]: Boogie Preprocessor took 26.93 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,021 INFO L168 Benchmark]: RCFGBuilder took 602.49 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 133.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,022 INFO L168 Benchmark]: TraceAbstraction took 1656.10 ms. Allocated memory was 152.0 MB in the beginning and 207.6 MB in the end (delta: 55.6 MB). Free memory was 132.9 MB in the beginning and 186.8 MB in the end (delta: -53.9 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,023 INFO L168 Benchmark]: Witness Printer took 100.29 ms. Allocated memory is still 207.6 MB. Free memory was 186.8 MB in the beginning and 183.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:22,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.97 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.43 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.93 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 602.49 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 133.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1656.10 ms. Allocated memory was 152.0 MB in the beginning and 207.6 MB in the end (delta: 55.6 MB). Free memory was 132.9 MB in the beginning and 186.8 MB in the end (delta: -53.9 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. * Witness Printer took 100.29 ms. Allocated memory is still 207.6 MB. Free memory was 186.8 MB in the beginning and 183.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (1 <= \result && pd1 == pd2) && pd2 == pd1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 72 SDslu, 77 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 20 NumberOfFragments, 14 HoareAnnotationTreeSize, 5 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...