/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 21:56:57,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 21:56:57,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 21:56:57,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 21:56:57,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 21:56:57,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 21:56:57,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 21:56:57,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 21:56:57,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 21:56:57,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 21:56:57,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 21:56:57,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 21:56:57,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 21:56:57,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 21:56:57,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 21:56:57,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 21:56:57,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 21:56:57,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 21:56:57,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 21:56:57,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 21:56:57,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 21:56:57,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 21:56:57,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 21:56:57,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 21:56:57,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 21:56:57,312 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 21:56:57,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 21:56:57,312 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 21:56:57,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 21:56:57,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 21:56:57,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 21:56:57,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 21:56:57,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 21:56:57,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 21:56:57,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 21:56:57,315 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 21:56:57,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 21:56:57,316 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 21:56:57,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 21:56:57,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 21:56:57,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 21:56:57,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 21:56:57,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 21:56:57,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 21:56:57,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 21:56:57,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 21:56:57,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 21:56:57,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 21:56:57,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 21:56:57,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 21:56:57,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 21:56:57,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 21:56:57,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 21:56:57,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 21:56:57,610 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 21:56:57,611 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 21:56:57,611 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2019-11-23 21:56:57,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a814926/990e4f6d94e640d29acddbc909f917c1/FLAG80a5c29ef [2019-11-23 21:56:58,086 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 21:56:58,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-2.c [2019-11-23 21:56:58,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a814926/990e4f6d94e640d29acddbc909f917c1/FLAG80a5c29ef [2019-11-23 21:56:58,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a814926/990e4f6d94e640d29acddbc909f917c1 [2019-11-23 21:56:58,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 21:56:58,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 21:56:58,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:58,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 21:56:58,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 21:56:58,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2888addc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58, skipping insertion in model container [2019-11-23 21:56:58,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 21:56:58,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 21:56:58,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:58,715 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 21:56:58,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:58,742 INFO L208 MainTranslator]: Completed translation [2019-11-23 21:56:58,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58 WrapperNode [2019-11-23 21:56:58,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:58,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:58,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 21:56:58,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 21:56:58,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:58,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 21:56:58,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 21:56:58,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 21:56:58,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... [2019-11-23 21:56:58,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 21:56:58,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 21:56:58,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 21:56:58,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 21:56:58,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-23 21:56:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 21:56:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 21:56:58,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 21:56:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 21:56:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 21:56:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 21:56:59,137 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 21:56:59,138 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-23 21:56:59,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:59 BoogieIcfgContainer [2019-11-23 21:56:59,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 21:56:59,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 21:56:59,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 21:56:59,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 21:56:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:56:58" (1/3) ... [2019-11-23 21:56:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d773462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:59, skipping insertion in model container [2019-11-23 21:56:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:58" (2/3) ... [2019-11-23 21:56:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d773462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:59, skipping insertion in model container [2019-11-23 21:56:59,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:59" (3/3) ... [2019-11-23 21:56:59,147 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2019-11-23 21:56:59,157 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 21:56:59,163 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 21:56:59,175 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 21:56:59,200 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 21:56:59,201 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 21:56:59,201 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 21:56:59,201 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 21:56:59,201 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 21:56:59,201 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 21:56:59,202 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 21:56:59,202 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 21:56:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 21:56:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 21:56:59,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:59,233 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:56:59,234 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-23 21:56:59,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:59,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337423177] [2019-11-23 21:56:59,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:59,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337423177] [2019-11-23 21:56:59,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:59,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-23 21:56:59,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986917596] [2019-11-23 21:56:59,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 21:56:59,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 21:56:59,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 21:56:59,555 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 7 states. [2019-11-23 21:56:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:59,707 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-23 21:56:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 21:56:59,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-23 21:56:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:59,717 INFO L225 Difference]: With dead ends: 25 [2019-11-23 21:56:59,717 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 21:56:59,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-23 21:56:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 21:56:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 21:56:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 21:56:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-23 21:56:59,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-23 21:56:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:59,754 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-23 21:56:59,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 21:56:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-23 21:56:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 21:56:59,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:59,755 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:56:59,756 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2019-11-23 21:56:59,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:59,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415454677] [2019-11-23 21:56:59,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:59,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415454677] [2019-11-23 21:56:59,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:59,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-23 21:56:59,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646079074] [2019-11-23 21:56:59,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 21:56:59,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:59,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 21:56:59,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 21:56:59,990 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 8 states. [2019-11-23 21:57:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:57:00,059 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-23 21:57:00,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 21:57:00,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-23 21:57:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:57:00,060 INFO L225 Difference]: With dead ends: 10 [2019-11-23 21:57:00,060 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 21:57:00,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-23 21:57:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 21:57:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 21:57:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 21:57:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 21:57:00,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-23 21:57:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:57:00,063 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 21:57:00,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 21:57:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 21:57:00,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 21:57:00,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 21:57:00,081 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 21:57:00,081 INFO L447 ceAbstractionStarter]: At program point L27(lines 10 28) the Hoare annotation is: true [2019-11-23 21:57:00,081 INFO L440 ceAbstractionStarter]: At program point L21(lines 11 28) the Hoare annotation is: false [2019-11-23 21:57:00,081 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2019-11-23 21:57:00,082 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-23 21:57:00,083 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-11-23 21:57:00,083 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-23 21:57:00,083 INFO L444 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-11-23 21:57:00,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:57:00 BoogieIcfgContainer [2019-11-23 21:57:00,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 21:57:00,095 INFO L168 Benchmark]: Toolchain (without parser) took 1582.08 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 106.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,096 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.54 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.22 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,099 INFO L168 Benchmark]: Boogie Preprocessor took 21.75 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 179.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,100 INFO L168 Benchmark]: RCFGBuilder took 253.06 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 165.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,100 INFO L168 Benchmark]: TraceAbstraction took 951.55 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 106.8 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:00,109 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.54 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.22 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.75 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 179.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.06 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 165.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 951.55 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 106.8 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 28 SDslu, 22 SDs, 0 SdLazy, 64 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...