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/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:24:21,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:24:21,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:24:21,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:24:21,793 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 [2019-10-03 02:24:21,816 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:24:21,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:24:21,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:24:21,818 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:24:21,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:24:21,819 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:24:21,819 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:24:21,819 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:24:21,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:24:21,819 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:24:21,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:24:21,821 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:24:21,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:24:21,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:24:21,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:24:21,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:24:21,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:24:21,823 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:24:21,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:24:21,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:24:21,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:24:21,824 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:24:21,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:24:21,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:24:21,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:24:21,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:24:21,825 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:24:21,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:24:21,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:24:21,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:24:21,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:24:21,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:24:21,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:24:21,907 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:24:21,907 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:24:21,908 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2019-10-03 02:24:21,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cf11e28/da5180ff5b4e4c8d9a3b9f1c4d21026a/FLAGbcf158822 [2019-10-03 02:24:22,442 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:24:22,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-2.c [2019-10-03 02:24:22,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cf11e28/da5180ff5b4e4c8d9a3b9f1c4d21026a/FLAGbcf158822 [2019-10-03 02:24:22,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cf11e28/da5180ff5b4e4c8d9a3b9f1c4d21026a [2019-10-03 02:24:22,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:24:22,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:24:22,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:22,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:24:22,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:24:22,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:22" (1/1) ... [2019-10-03 02:24:22,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554a5f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:22, skipping insertion in model container [2019-10-03 02:24:22,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:22" (1/1) ... [2019-10-03 02:24:22,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:24:22,843 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:24:23,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:23,035 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:24:23,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:23,062 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:24:23,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23 WrapperNode [2019-10-03 02:24:23,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:23,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:24:23,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:24:23,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:24:23,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:24:23,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:24:23,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:24:23,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:24:23,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (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 [2019-10-03 02:24:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:24:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:24:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:24:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:24:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:24:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:24:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:24:23,475 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:24:23,475 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:24:23,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:23 BoogieIcfgContainer [2019-10-03 02:24:23,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:24:23,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:24:23,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:24:23,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:24:23,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:24:22" (1/3) ... [2019-10-03 02:24:23,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63394dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:23, skipping insertion in model container [2019-10-03 02:24:23,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (2/3) ... [2019-10-03 02:24:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63394dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:23, skipping insertion in model container [2019-10-03 02:24:23,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:23" (3/3) ... [2019-10-03 02:24:23,502 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2019-10-03 02:24:23,524 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:24:23,533 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:24:23,566 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:24:23,593 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:24:23,593 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:24:23,593 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:24:23,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:24:23,594 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:24:23,594 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:24:23,594 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:24:23,594 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:24:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-03 02:24:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:23,615 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:23,616 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:23,617 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-10-03 02:24:23,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:23,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:23,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:23,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:23,667 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:23,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:23,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:24:23,814 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:23,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:24:23,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:24:23,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:24:23,831 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-10-03 02:24:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:23,927 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-03 02:24:23,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:24:23,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-03 02:24:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:23,938 INFO L225 Difference]: With dead ends: 25 [2019-10-03 02:24:23,939 INFO L226 Difference]: Without dead ends: 21 [2019-10-03 02:24:23,940 INFO L640 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 [2019-10-03 02:24:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-03 02:24:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-10-03 02:24:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-03 02:24:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-03 02:24:23,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-03 02:24:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:23,980 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-03 02:24:23,981 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:24:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-03 02:24:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:23,983 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:23,983 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:23,984 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-10-03 02:24:23,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:23,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:23,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:23,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:23,991 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:24,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:24,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:24:24,120 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:24,122 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:24:24,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:24:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:24:24,123 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2019-10-03 02:24:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:24,213 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-10-03 02:24:24,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:24:24,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-03 02:24:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:24,215 INFO L225 Difference]: With dead ends: 20 [2019-10-03 02:24:24,215 INFO L226 Difference]: Without dead ends: 14 [2019-10-03 02:24:24,216 INFO L640 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 [2019-10-03 02:24:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-03 02:24:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-03 02:24:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-03 02:24:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-10-03 02:24:24,220 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-10-03 02:24:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:24,220 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-10-03 02:24:24,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:24:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-10-03 02:24:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:24,221 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:24,222 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:24,222 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:24,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-10-03 02:24:24,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:24,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:24,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:24,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:24,225 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:24,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:24,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:24:24,415 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:24,416 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:24:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:24:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:24:24,417 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 8 states. [2019-10-03 02:24:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:24,491 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-10-03 02:24:24,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:24:24,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-10-03 02:24:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:24,492 INFO L225 Difference]: With dead ends: 12 [2019-10-03 02:24:24,492 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:24:24,493 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-10-03 02:24:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:24:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:24:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:24:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:24:24,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-03 02:24:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:24,494 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:24:24,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:24:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:24:24,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:24:24,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:24:24 BoogieIcfgContainer [2019-10-03 02:24:24,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:24:24,504 INFO L168 Benchmark]: Toolchain (without parser) took 1688.01 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 87.8 MB in the beginning and 95.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,505 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.68 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 87.6 MB in the beginning and 177.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,508 INFO L168 Benchmark]: Boogie Preprocessor took 39.43 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 176.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,510 INFO L168 Benchmark]: RCFGBuilder took 282.03 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 162.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,512 INFO L168 Benchmark]: TraceAbstraction took 1021.68 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 95.7 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:24,522 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 140.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.68 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 87.6 MB in the beginning and 177.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.43 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 176.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.03 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 162.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1021.68 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 95.7 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 32 SDslu, 71 SDs, 0 SdLazy, 75 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 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, 1320 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...