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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:37,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:37,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:37,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:28:37,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:37,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:37,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:37,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:37,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:37,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:37,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:37,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:37,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:37,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:37,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:37,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:37,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:28:37,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:37,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:37,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:37,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:37,308 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:37,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:37,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:37,309 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:37,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:37,310 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:37,311 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:37,311 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:37,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:37,311 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:37,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:37,313 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:37,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:37,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:37,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:37,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:37,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:37,315 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:37,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:37,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:37,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:37,316 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:37,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:37,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:37,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:37,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:37,317 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:37,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:37,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:37,318 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:37,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:37,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:37,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:37,397 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:37,397 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:37,398 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-09-20 13:28:37,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a380b645/d58320d26e3146519580b135a50e4077/FLAG6cfc20147 [2019-09-20 13:28:37,966 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:37,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-09-20 13:28:37,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a380b645/d58320d26e3146519580b135a50e4077/FLAG6cfc20147 [2019-09-20 13:28:38,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a380b645/d58320d26e3146519580b135a50e4077 [2019-09-20 13:28:38,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:38,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:38,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:38,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:38,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:38,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6146627e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38, skipping insertion in model container [2019-09-20 13:28:38,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,338 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:38,358 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:38,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:38,556 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:38,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:38,590 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:38,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38 WrapperNode [2019-09-20 13:28:38,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:38,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:38,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:38,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:38,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (1/1) ... [2019-09-20 13:28:38,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:38,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:38,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:38,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:38,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (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 [2019-09-20 13:28:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-09-20 13:28:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:28:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-09-20 13:28:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:28:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:39,079 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:39,079 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:39,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:39 BoogieIcfgContainer [2019-09-20 13:28:39,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:39,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:39,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:39,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:39,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:38" (1/3) ... [2019-09-20 13:28:39,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aacb43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:39, skipping insertion in model container [2019-09-20 13:28:39,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:38" (2/3) ... [2019-09-20 13:28:39,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aacb43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:39, skipping insertion in model container [2019-09-20 13:28:39,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:39" (3/3) ... [2019-09-20 13:28:39,099 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-09-20 13:28:39,121 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:39,138 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:39,164 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:39,192 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:39,192 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:39,192 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:39,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:39,193 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:39,193 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:39,193 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:39,193 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-20 13:28:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:28:39,214 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:39,215 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:39,217 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash -722462527, now seen corresponding path program 1 times [2019-09-20 13:28:39,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:39,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:39,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,284 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:39,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:39,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:39,451 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:39,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:39,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:39,473 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-09-20 13:28:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:39,548 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-20 13:28:39,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:28:39,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-20 13:28:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:39,564 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:28:39,564 INFO L226 Difference]: Without dead ends: 19 [2019-09-20 13:28:39,568 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-20 13:28:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-20 13:28:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-20 13:28:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-20 13:28:39,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-09-20 13:28:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:39,624 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-20 13:28:39,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-20 13:28:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:39,627 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:39,628 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:39,628 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:39,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1499811687, now seen corresponding path program 1 times [2019-09-20 13:28:39,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:39,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:39,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,641 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:39,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:39,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:28:39,845 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:39,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:28:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:28:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:28:39,853 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2019-09-20 13:28:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:39,917 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-20 13:28:39,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:39,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-20 13:28:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:39,918 INFO L225 Difference]: With dead ends: 19 [2019-09-20 13:28:39,919 INFO L226 Difference]: Without dead ends: 19 [2019-09-20 13:28:39,920 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:28:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-20 13:28:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-20 13:28:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-20 13:28:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-20 13:28:39,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2019-09-20 13:28:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:39,925 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-20 13:28:39,925 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:28:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-20 13:28:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:28:39,926 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:39,926 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:39,927 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:39,927 INFO L82 PathProgramCache]: Analyzing trace with hash -750476091, now seen corresponding path program 1 times [2019-09-20 13:28:39,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:39,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:39,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,930 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:40,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:40,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:40,000 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:40,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:40,002 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2019-09-20 13:28:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:40,028 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-20 13:28:40,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:28:40,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-20 13:28:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:40,029 INFO L225 Difference]: With dead ends: 17 [2019-09-20 13:28:40,029 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:40,030 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:40,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-20 13:28:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:40,031 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:40,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:40,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:40,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:40 BoogieIcfgContainer [2019-09-20 13:28:40,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:40,043 INFO L168 Benchmark]: Toolchain (without parser) took 1718.27 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 84.7 MB in the beginning and 109.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,045 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 131.1 MB. Free memory was 103.0 MB in the beginning and 102.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.12 ms. Allocated memory is still 131.1 MB. Free memory was 84.5 MB in the beginning and 74.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,049 INFO L168 Benchmark]: Boogie Preprocessor took 126.04 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 74.2 MB in the beginning and 175.4 MB in the end (delta: -101.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,050 INFO L168 Benchmark]: RCFGBuilder took 363.06 ms. Allocated memory is still 198.2 MB. Free memory was 175.4 MB in the beginning and 158.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,052 INFO L168 Benchmark]: TraceAbstraction took 956.30 ms. Allocated memory is still 198.2 MB. Free memory was 158.2 MB in the beginning and 109.5 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:40,062 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 131.1 MB. Free memory was 103.0 MB in the beginning and 102.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.12 ms. Allocated memory is still 131.1 MB. Free memory was 84.5 MB in the beginning and 74.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.04 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 74.2 MB in the beginning and 175.4 MB in the end (delta: -101.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.06 ms. Allocated memory is still 198.2 MB. Free memory was 175.4 MB in the beginning and 158.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 956.30 ms. Allocated memory is still 198.2 MB. Free memory was 158.2 MB in the beginning and 109.5 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 23 SDslu, 106 SDs, 0 SdLazy, 20 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...