/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:10:36,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:10:36,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:10:36,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:10:36,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:10:36,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:10:36,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:10:36,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:10:36,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:10:36,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:10:36,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:10:36,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:10:36,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:10:36,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:10:36,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:10:36,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:10:36,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:10:36,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:10:36,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:10:36,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:10:36,265 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 [2019-11-06 21:10:36,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:10:36,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:10:36,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:10:36,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:10:36,288 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:10:36,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:10:36,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:10:36,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:10:36,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:10:36,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:10:36,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:10:36,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:10:36,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:10:36,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:10:36,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:10:36,292 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:10:36,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:10:36,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:10:36,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:10:36,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:10:36,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:10:36,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:10:36,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:10:36,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:10:36,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:10:36,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:10:36,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:10:36,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:10:36,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:10:36,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:10:36,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:10:36,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:10:36,648 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:10:36,649 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:10:36,650 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-11-06 21:10:36,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd9ccbb6a/ee17dab993f245bfb271402bbc2c48c8/FLAGa0ebc1bd7 [2019-11-06 21:10:37,135 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:10:37,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-11-06 21:10:37,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd9ccbb6a/ee17dab993f245bfb271402bbc2c48c8/FLAGa0ebc1bd7 [2019-11-06 21:10:37,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd9ccbb6a/ee17dab993f245bfb271402bbc2c48c8 [2019-11-06 21:10:37,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:10:37,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:10:37,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:10:37,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:10:37,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:10:37,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bb15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37, skipping insertion in model container [2019-11-06 21:10:37,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,546 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:10:37,561 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:10:37,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:10:37,818 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:10:37,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:10:37,860 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:10:37,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37 WrapperNode [2019-11-06 21:10:37,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:10:37,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:10:37,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:10:37,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:10:37,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (1/1) ... [2019-11-06 21:10:37,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:10:37,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:10:37,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:10:37,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:10:37,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (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 [2019-11-06 21:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:10:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-11-06 21:10:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:10:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:10:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:10:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 21:10:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:10:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:10:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:10:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:10:38,274 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:10:38,274 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:10:38,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:10:38 BoogieIcfgContainer [2019-11-06 21:10:38,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:10:38,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:10:38,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:10:38,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:10:38,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:10:37" (1/3) ... [2019-11-06 21:10:38,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18640036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:10:38, skipping insertion in model container [2019-11-06 21:10:38,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:10:37" (2/3) ... [2019-11-06 21:10:38,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18640036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:10:38, skipping insertion in model container [2019-11-06 21:10:38,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:10:38" (3/3) ... [2019-11-06 21:10:38,283 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-11-06 21:10:38,294 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:10:38,303 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:10:38,320 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:10:38,349 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:10:38,350 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:10:38,350 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:10:38,350 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:10:38,350 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:10:38,350 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:10:38,350 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:10:38,350 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:10:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-06 21:10:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:10:38,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:10:38,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:10:38,383 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:10:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:10:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash -722462527, now seen corresponding path program 1 times [2019-11-06 21:10:38,402 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:10:38,402 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298598939] [2019-11-06 21:10:38,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:10:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:10:38,723 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298598939] [2019-11-06 21:10:38,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:10:38,724 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:10:38,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780842013] [2019-11-06 21:10:38,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:10:38,733 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:10:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:10:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:10:38,753 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-06 21:10:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:10:38,887 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-06 21:10:38,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:10:38,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-06 21:10:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:10:38,899 INFO L225 Difference]: With dead ends: 31 [2019-11-06 21:10:38,899 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:10:38,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:10:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:10:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 21:10:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 21:10:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-06 21:10:38,939 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-11-06 21:10:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:10:38,940 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-06 21:10:38,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:10:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-06 21:10:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 21:10:38,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:10:38,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:10:38,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:10:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:10:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1499811687, now seen corresponding path program 1 times [2019-11-06 21:10:38,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:10:38,943 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709398047] [2019-11-06 21:10:38,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:10:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:10:39,127 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709398047] [2019-11-06 21:10:39,127 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:10:39,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:10:39,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591767281] [2019-11-06 21:10:39,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:10:39,130 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:10:39,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:10:39,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:10:39,131 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2019-11-06 21:10:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:10:39,265 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-06 21:10:39,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:10:39,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-06 21:10:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:10:39,267 INFO L225 Difference]: With dead ends: 21 [2019-11-06 21:10:39,268 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:10:39,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:10:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:10:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 21:10:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 21:10:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-06 21:10:39,282 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2019-11-06 21:10:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:10:39,283 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-06 21:10:39,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:10:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-06 21:10:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:10:39,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:10:39,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:10:39,286 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:10:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:10:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash -750476091, now seen corresponding path program 1 times [2019-11-06 21:10:39,288 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:10:39,289 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959401388] [2019-11-06 21:10:39,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:10:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:10:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:10:39,446 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959401388] [2019-11-06 21:10:39,447 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:10:39,447 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:10:39,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109817603] [2019-11-06 21:10:39,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:10:39,452 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:10:39,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:10:39,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:10:39,453 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2019-11-06 21:10:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:10:39,557 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-06 21:10:39,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:10:39,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-06 21:10:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:10:39,558 INFO L225 Difference]: With dead ends: 19 [2019-11-06 21:10:39,558 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:10:39,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:10:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:10:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:10:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:10:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:10:39,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-06 21:10:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:10:39,563 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:10:39,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:10:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:10:39,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:10:39,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:10:39,689 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:10:39,690 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2019-11-06 21:10:39,690 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:10:39,690 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2019-11-06 21:10:39,690 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-06 21:10:39,691 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-11-06 21:10:39,691 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-11-06 21:10:39,691 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:10:39,691 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:10:39,692 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:10:39,692 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:10:39,693 INFO L439 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-11-06 21:10:39,693 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-11-06 21:10:39,693 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-06 21:10:39,694 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (and (= |main_~#c~0.offset| main_~pc~0.offset) (not (= main_~pc~0.base 0)) (= main_~pc~0.base |main_~#c~0.base|)) [2019-11-06 21:10:39,694 INFO L443 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-11-06 21:10:39,694 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-06 21:10:39,694 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-11-06 21:10:39,695 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2019-11-06 21:10:39,695 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-11-06 21:10:39,695 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-06 21:10:39,695 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-11-06 21:10:39,696 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-11-06 21:10:39,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:10:39 BoogieIcfgContainer [2019-11-06 21:10:39,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:10:39,714 INFO L168 Benchmark]: Toolchain (without parser) took 2184.17 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 104.5 MB in the beginning and 187.9 MB in the end (delta: -83.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,715 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.45 ms. Allocated memory is still 139.5 MB. Free memory was 104.0 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,721 INFO L168 Benchmark]: Boogie Preprocessor took 133.02 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 180.7 MB in the end (delta: -86.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,723 INFO L168 Benchmark]: RCFGBuilder took 280.19 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 164.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,724 INFO L168 Benchmark]: TraceAbstraction took 1431.93 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 164.5 MB in the beginning and 189.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:10:39,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.45 ms. Allocated memory is still 139.5 MB. Free memory was 104.0 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.02 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 180.7 MB in the end (delta: -86.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.19 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 164.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1431.93 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 164.5 MB in the beginning and 189.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 42 SDtfs, 35 SDslu, 71 SDs, 0 SdLazy, 109 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 47 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 3029 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...