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/test28-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:46:30,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:46:30,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:46:30,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:46:30,756 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 [2019-09-10 01:46:30,784 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:46:30,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:46:30,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:46:30,785 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:46:30,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:46:30,786 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:46:30,786 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:46:30,787 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:46:30,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:46:30,787 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:46:30,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:46:30,788 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:46:30,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:46:30,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:46:30,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:46:30,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:46:30,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:46:30,789 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:46:30,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:46:30,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:46:30,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:46:30,790 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:46:30,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:46:30,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:46:30,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:46:30,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:46:30,791 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:46:30,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:46:30,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:46:30,792 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:46:30,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:46:30,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:46:30,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:46:30,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:46:30,848 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:46:30,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-1.c [2019-09-10 01:46:30,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bd3a76c/e06f68a99e4c4623a2fbbbd7d53469fa/FLAG7b69af612 [2019-09-10 01:46:31,345 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:46:31,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-1.c [2019-09-10 01:46:31,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bd3a76c/e06f68a99e4c4623a2fbbbd7d53469fa/FLAG7b69af612 [2019-09-10 01:46:31,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bd3a76c/e06f68a99e4c4623a2fbbbd7d53469fa [2019-09-10 01:46:31,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:46:31,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:46:31,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:31,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:46:31,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:46:31,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:31,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262768b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31, skipping insertion in model container [2019-09-10 01:46:31,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:31,760 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:46:31,776 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:46:31,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:31,941 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:46:31,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:31,969 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:46:31,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31 WrapperNode [2019-09-10 01:46:31,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:31,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:46:31,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:46:31,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:46:32,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (1/1) ... [2019-09-10 01:46:32,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:46:32,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:46:32,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:46:32,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:46:32,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (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 [2019-09-10 01:46:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:46:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:46:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:46:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:46:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:46:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:46:32,370 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:46:32,371 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:46:32,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:32 BoogieIcfgContainer [2019-09-10 01:46:32,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:46:32,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:46:32,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:46:32,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:46:32,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:46:31" (1/3) ... [2019-09-10 01:46:32,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760a6fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:32, skipping insertion in model container [2019-09-10 01:46:32,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:31" (2/3) ... [2019-09-10 01:46:32,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760a6fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:32, skipping insertion in model container [2019-09-10 01:46:32,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:32" (3/3) ... [2019-09-10 01:46:32,381 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-1.c [2019-09-10 01:46:32,390 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:46:32,405 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:46:32,435 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:46:32,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:46:32,474 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:46:32,474 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:46:32,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:46:32,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:46:32,475 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:46:32,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:46:32,476 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:46:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-10 01:46:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:32,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:32,530 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:32,538 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:32,553 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-09-10 01:46:32,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:32,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:32,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:32,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:32,614 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:32,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:32,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:46:32,841 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:32,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:46:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:46:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:46:32,871 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2019-09-10 01:46:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:33,067 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-09-10 01:46:33,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:46:33,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-09-10 01:46:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:33,083 INFO L225 Difference]: With dead ends: 22 [2019-09-10 01:46:33,083 INFO L226 Difference]: Without dead ends: 14 [2019-09-10 01:46:33,087 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-10 01:46:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-10 01:46:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-10 01:46:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-10 01:46:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-10 01:46:33,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2019-09-10 01:46:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:33,126 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-10 01:46:33,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:46:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-10 01:46:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:33,129 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:33,130 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:33,131 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-09-10 01:46:33,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:33,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:33,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:33,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:33,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:46:33,231 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:33,233 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:46:33,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:46:33,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:46:33,234 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2019-09-10 01:46:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:33,290 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-09-10 01:46:33,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:46:33,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 01:46:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:33,292 INFO L225 Difference]: With dead ends: 16 [2019-09-10 01:46:33,292 INFO L226 Difference]: Without dead ends: 14 [2019-09-10 01:46:33,293 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:46:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-10 01:46:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-10 01:46:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-10 01:46:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-09-10 01:46:33,297 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-09-10 01:46:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:33,297 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-09-10 01:46:33,298 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:46:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-09-10 01:46:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:33,298 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:33,299 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:33,299 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1852956943, now seen corresponding path program 1 times [2019-09-10 01:46:33,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:33,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:33,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:46:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:46:33,361 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:46:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:46:33 BoogieIcfgContainer [2019-09-10 01:46:33,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:46:33,394 INFO L168 Benchmark]: Toolchain (without parser) took 1648.25 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 87.7 MB in the beginning and 115.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,395 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.35 ms. Allocated memory is still 141.6 MB. Free memory was 87.5 MB in the beginning and 77.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,397 INFO L168 Benchmark]: Boogie Preprocessor took 123.29 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 77.9 MB in the beginning and 178.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,398 INFO L168 Benchmark]: RCFGBuilder took 278.56 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 165.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,399 INFO L168 Benchmark]: TraceAbstraction took 1017.58 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 115.1 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:33,403 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.35 ms. Allocated memory is still 141.6 MB. Free memory was 87.5 MB in the beginning and 77.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.29 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 77.9 MB in the beginning and 178.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 278.56 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 165.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1017.58 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 115.1 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L13] int n = __VERIFIER_nondet_int(); [L14] EXPR n ? &d1 : &d2 VAL [d1={1:0}, d2={-1:0}, n=0, n ? &d1 : &d2={-1:0}] [L14] struct dummy *pd = n ? &d1 : &d2; [L15] COND TRUE pd == &d2 [L16] pd->a = 0 VAL [d1={1:0}, d2={-1:0}, n=0, pd={-1:0}] [L20] pd == &d2 && d2.b != 0 [L20] EXPR d2.b [L20] pd == &d2 && d2.b != 0 VAL [d1={1:0}, d2={-1:0}, d2.b=10, n=0, pd={-1:0}, pd == &d2 && d2.b != 0=1] [L20] COND TRUE pd == &d2 && d2.b != 0 [L26] __VERIFIER_error() VAL [d1={1:0}, d2={-1:0}, n=0, pd={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 31 SDslu, 66 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...