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/ex3_forlist.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:24,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:24,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:24,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:28:24,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:24,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:24,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:24,664 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 13:28:24,684 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:24,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:24,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:24,686 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:24,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:24,687 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:24,687 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:24,687 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:24,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:24,688 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:24,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:24,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:24,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:24,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:24,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:24,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:24,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:24,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:24,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:24,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:24,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:24,693 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:24,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:24,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:24,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:24,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:24,695 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:24,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:24,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:24,696 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:24,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:24,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:24,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:24,769 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:24,770 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:24,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2019-09-20 13:28:24,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc57a2c3/af454ee31fa946ab993c3916132155ae/FLAGd9075debe [2019-09-20 13:28:25,282 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:25,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2019-09-20 13:28:25,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc57a2c3/af454ee31fa946ab993c3916132155ae/FLAGd9075debe [2019-09-20 13:28:25,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc57a2c3/af454ee31fa946ab993c3916132155ae [2019-09-20 13:28:25,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:25,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:25,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:25,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:25,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:25,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:25" (1/1) ... [2019-09-20 13:28:25,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa509cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:25, skipping insertion in model container [2019-09-20 13:28:25,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:25" (1/1) ... [2019-09-20 13:28:25,707 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:25,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:25,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:25,914 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:25,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:26,071 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:26,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26 WrapperNode [2019-09-20 13:28:26,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:26,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:26,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:26,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:26,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (1/1) ... [2019-09-20 13:28:26,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:26,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:26,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:26,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:26,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (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 13:28:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-20 13:28:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-20 13:28:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-20 13:28:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-09-20 13:28:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2019-09-20 13:28:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-20 13:28:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-20 13:28:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-20 13:28:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-20 13:28:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:26,667 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:26,667 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:28:26,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:26 BoogieIcfgContainer [2019-09-20 13:28:26,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:26,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:26,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:26,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:25" (1/3) ... [2019-09-20 13:28:26,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a316961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:26, skipping insertion in model container [2019-09-20 13:28:26,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:26" (2/3) ... [2019-09-20 13:28:26,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a316961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:26, skipping insertion in model container [2019-09-20 13:28:26,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:26" (3/3) ... [2019-09-20 13:28:26,677 INFO L109 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2019-09-20 13:28:26,687 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:26,695 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:26,713 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:26,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:26,743 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:26,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:26,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:26,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:26,744 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:26,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:26,744 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-09-20 13:28:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-20 13:28:26,768 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:26,769 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:26,772 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1451885248, now seen corresponding path program 1 times [2019-09-20 13:28:26,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:26,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:26,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:26,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:26,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-20 13:28:26,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:26,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:28:26,993 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:26,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:28:27,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:28:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:27,019 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2019-09-20 13:28:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:27,087 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2019-09-20 13:28:27,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:28:27,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-09-20 13:28:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:27,108 INFO L225 Difference]: With dead ends: 48 [2019-09-20 13:28:27,108 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:28:27,111 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:28:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-09-20 13:28:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 13:28:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-09-20 13:28:27,159 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2019-09-20 13:28:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:27,160 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-09-20 13:28:27,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:28:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-09-20 13:28:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-20 13:28:27,163 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:27,164 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:27,164 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash -507187170, now seen corresponding path program 1 times [2019-09-20 13:28:27,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:27,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:27,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:27,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:27,168 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:28:27,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:27,305 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:27,306 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2019-09-20 13:28:27,308 INFO L207 CegarAbsIntRunner]: [0], [6], [8], [10], [14], [15], [16], [17], [23], [36], [37], [45], [48], [53], [65], [68], [71], [73], [77], [84], [85], [89], [91], [92], [93], [94], [95], [96], [97], [98], [99], [100], [101], [105], [106], [107] [2019-09-20 13:28:27,349 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:27,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:27,405 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:27,407 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-20 13:28:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:27,410 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:27,445 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:28:27,445 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:27,448 INFO L420 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2019-09-20 13:28:27,448 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:27,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:27,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2019-09-20 13:28:27,450 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:27,451 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:27,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:27,452 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 2 states. [2019-09-20 13:28:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:27,453 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:28:27,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:27,453 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2019-09-20 13:28:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:27,454 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:28:27,454 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:27,455 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:27,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-09-20 13:28:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:27,456 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:27,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:27,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:27,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:27 BoogieIcfgContainer [2019-09-20 13:28:27,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:27,465 INFO L168 Benchmark]: Toolchain (without parser) took 1774.70 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.5 MB in the beginning and 110.7 MB in the end (delta: -26.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,466 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.5 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.85 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.3 MB in the beginning and 175.5 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,468 INFO L168 Benchmark]: Boogie Preprocessor took 69.08 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 173.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,469 INFO L168 Benchmark]: RCFGBuilder took 523.77 ms. Allocated memory is still 198.7 MB. Free memory was 173.6 MB in the beginning and 152.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,470 INFO L168 Benchmark]: TraceAbstraction took 792.12 ms. Allocated memory is still 198.7 MB. Free memory was 152.3 MB in the beginning and 110.7 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:27,474 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 137.4 MB. Free memory was 103.5 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.85 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 84.3 MB in the beginning and 175.5 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.08 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 173.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 523.77 ms. Allocated memory is still 198.7 MB. Free memory was 173.6 MB in the beginning and 152.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 792.12 ms. Allocated memory is still 198.7 MB. Free memory was 152.3 MB in the beginning and 110.7 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 8 procedures, 48 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 1 SDslu, 50 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.225 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 3200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...