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/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:44,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:44,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:44,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:28:44,274 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 13:28:44,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:44,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:44,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:44,290 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:44,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:44,291 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:44,291 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:44,291 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:44,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:44,292 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:44,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:44,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:44,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:44,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:44,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:44,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:44,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:44,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:44,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:44,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:44,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:44,295 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:44,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:44,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:44,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:44,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:44,296 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:44,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:44,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:44,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:44,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:44,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:44,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:44,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:44,349 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:44,352 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2019-09-20 13:28:44,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9f79581/24618a78d6074397a0f9e4d0cfb0ee05/FLAG009c88e54 [2019-09-20 13:28:44,841 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:44,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2019-09-20 13:28:44,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9f79581/24618a78d6074397a0f9e4d0cfb0ee05/FLAG009c88e54 [2019-09-20 13:28:45,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9f79581/24618a78d6074397a0f9e4d0cfb0ee05 [2019-09-20 13:28:45,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:45,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:45,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:45,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:45,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:45,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f900ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45, skipping insertion in model container [2019-09-20 13:28:45,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,229 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:45,244 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:45,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:45,418 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:45,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:45,448 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:45,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45 WrapperNode [2019-09-20 13:28:45,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:45,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:45,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:45,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:45,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (1/1) ... [2019-09-20 13:28:45,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:45,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:45,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:45,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:45,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (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 13:28:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:45,855 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:45,855 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:45,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:45 BoogieIcfgContainer [2019-09-20 13:28:45,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:45,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:45,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:45,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:45,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:45" (1/3) ... [2019-09-20 13:28:45,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c767e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:45, skipping insertion in model container [2019-09-20 13:28:45,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:45" (2/3) ... [2019-09-20 13:28:45,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c767e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:45, skipping insertion in model container [2019-09-20 13:28:45,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:45" (3/3) ... [2019-09-20 13:28:45,864 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2019-09-20 13:28:45,876 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:45,884 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:45,905 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:45,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:45,943 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:45,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:45,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:45,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:45,944 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:45,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:45,945 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-20 13:28:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:28:45,977 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:45,978 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:45,980 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-09-20 13:28:45,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:46,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:46,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,058 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:46,221 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 13:28:46,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:46,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:46,225 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:46,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:46,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:46,251 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-09-20 13:28:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:46,327 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-09-20 13:28:46,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:28:46,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-20 13:28:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:46,337 INFO L225 Difference]: With dead ends: 25 [2019-09-20 13:28:46,338 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:28:46,340 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:28:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-09-20 13:28:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 13:28:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-20 13:28:46,375 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-09-20 13:28:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:46,376 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-20 13:28:46,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-20 13:28:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:28:46,377 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:46,377 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:46,378 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:46,378 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-09-20 13:28:46,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:46,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:46,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,381 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:46,497 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 13:28:46,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:46,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:28:46,498 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:46,502 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:28:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:28:46,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:46,503 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2019-09-20 13:28:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:46,604 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-09-20 13:28:46,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:28:46,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-09-20 13:28:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:46,606 INFO L225 Difference]: With dead ends: 20 [2019-09-20 13:28:46,606 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 13:28:46,607 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:28:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 13:28:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 13:28:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 13:28:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-09-20 13:28:46,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-09-20 13:28:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:46,611 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-09-20 13:28:46,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:28:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-09-20 13:28:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:28:46,612 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:46,613 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:46,613 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-09-20 13:28:46,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:46,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:46,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:46,617 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:46,750 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 13:28:46,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:46,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:28:46,754 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:46,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:28:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:28:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:46,756 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2019-09-20 13:28:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:46,804 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-09-20 13:28:46,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:28:46,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-09-20 13:28:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:46,805 INFO L225 Difference]: With dead ends: 12 [2019-09-20 13:28:46,806 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:46,806 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:28:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:46,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-20 13:28:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:46,809 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:46,809 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:28:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:46,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:46,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:46 BoogieIcfgContainer [2019-09-20 13:28:46,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:46,821 INFO L168 Benchmark]: Toolchain (without parser) took 1603.54 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 84.0 MB in the beginning and 104.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,823 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 102.2 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.14 ms. Allocated memory is still 132.1 MB. Free memory was 83.8 MB in the beginning and 73.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,828 INFO L168 Benchmark]: Boogie Preprocessor took 121.15 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 73.6 MB in the beginning and 174.8 MB in the end (delta: -101.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,829 INFO L168 Benchmark]: RCFGBuilder took 285.55 ms. Allocated memory is still 198.2 MB. Free memory was 174.8 MB in the beginning and 161.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,830 INFO L168 Benchmark]: TraceAbstraction took 957.60 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 104.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:46,834 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 102.2 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.14 ms. Allocated memory is still 132.1 MB. Free memory was 83.8 MB in the beginning and 73.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.15 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 73.6 MB in the beginning and 174.8 MB in the end (delta: -101.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.55 ms. Allocated memory is still 198.2 MB. Free memory was 174.8 MB in the beginning and 161.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 957.60 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 104.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 3 procedures, 18 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 28 SDslu, 72 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 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...