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/array-examples/standard_init1_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:58,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:58,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:58,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:29:58,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:58,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:58,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:58,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:58,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:58,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:58,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:58,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:58,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:58,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:58,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:58,815 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 [2019-10-02 16:29:58,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:58,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:58,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:58,831 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:58,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:58,831 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:58,832 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:58,832 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:58,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:58,832 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:58,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:58,833 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:58,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:58,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:58,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:58,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:58,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:58,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:58,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:58,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:58,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:58,835 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:58,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:58,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:58,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:58,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:58,836 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:58,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:58,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:58,837 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:58,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:58,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:58,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:58,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:58,885 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:58,886 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init1_ground-1.i [2019-10-02 16:29:58,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f54d7e/906113d82025444bbab637be4b7c1272/FLAG211819711 [2019-10-02 16:29:59,395 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:59,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init1_ground-1.i [2019-10-02 16:29:59,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f54d7e/906113d82025444bbab637be4b7c1272/FLAG211819711 [2019-10-02 16:29:59,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f54d7e/906113d82025444bbab637be4b7c1272 [2019-10-02 16:29:59,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:59,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:59,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:59,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:59,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:59,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:59" (1/1) ... [2019-10-02 16:29:59,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8bf277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:59, skipping insertion in model container [2019-10-02 16:29:59,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:59" (1/1) ... [2019-10-02 16:29:59,793 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:59,809 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:00,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:00,057 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:00,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:00,260 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:00,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00 WrapperNode [2019-10-02 16:30:00,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:00,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:00,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:00,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:00,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ... [2019-10-02 16:30:00,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:00,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:00,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:00,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:00,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (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 [2019-10-02 16:30:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:00,598 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:00,599 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:00,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:00 BoogieIcfgContainer [2019-10-02 16:30:00,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:00,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:00,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:00,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:00,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:59" (1/3) ... [2019-10-02 16:30:00,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29106ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:00, skipping insertion in model container [2019-10-02 16:30:00,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (2/3) ... [2019-10-02 16:30:00,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29106ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:00, skipping insertion in model container [2019-10-02 16:30:00,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:00" (3/3) ... [2019-10-02 16:30:00,622 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init1_ground-1.i [2019-10-02 16:30:00,640 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:00,659 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:00,673 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:00,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:00,695 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:00,695 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:00,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:00,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:00,695 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:00,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:00,696 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-02 16:30:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 16:30:00,718 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:00,719 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:00,721 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash -441053002, now seen corresponding path program 1 times [2019-10-02 16:30:00,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:00,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:00,777 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:00,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:00,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:00,874 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:00,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:00,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:00,891 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-02 16:30:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:00,904 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-10-02 16:30:00,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:00,905 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-02 16:30:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:00,912 INFO L225 Difference]: With dead ends: 23 [2019-10-02 16:30:00,913 INFO L226 Difference]: Without dead ends: 18 [2019-10-02 16:30:00,914 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-02 16:30:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-02 16:30:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-02 16:30:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-02 16:30:00,945 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-10-02 16:30:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:00,945 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-02 16:30:00,946 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-02 16:30:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 16:30:00,947 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:00,947 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:00,947 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 303899570, now seen corresponding path program 1 times [2019-10-02 16:30:00,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:00,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:00,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:00,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:00,951 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:01,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:01,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:01,006 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:01,008 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:01,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:01,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:01,009 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-10-02 16:30:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:01,020 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-02 16:30:01,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:01,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-02 16:30:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:01,022 INFO L225 Difference]: With dead ends: 19 [2019-10-02 16:30:01,022 INFO L226 Difference]: Without dead ends: 19 [2019-10-02 16:30:01,023 INFO L640 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 [2019-10-02 16:30:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-02 16:30:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-02 16:30:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-02 16:30:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-02 16:30:01,027 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2019-10-02 16:30:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:01,028 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-02 16:30:01,028 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-02 16:30:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 16:30:01,028 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:01,028 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:01,029 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1260126610, now seen corresponding path program 1 times [2019-10-02 16:30:01,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:01,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:01,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:01,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:01,032 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:01,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:01,112 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:01,113 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2019-10-02 16:30:01,114 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [26], [36], [39], [41], [47], [48], [49], [51] [2019-10-02 16:30:01,150 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:01,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:01,208 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:01,210 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-10-02 16:30:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:01,214 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:01,244 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:01,245 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:01,246 INFO L420 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2019-10-02 16:30:01,246 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:01,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:01,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:01,248 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:01,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:01,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:01,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:01,249 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 2 states. [2019-10-02 16:30:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:01,250 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:01,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:01,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-02 16:30:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:01,250 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:01,251 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:01,251 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:01,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-02 16:30:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:01,252 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:01,253 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:01,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:01,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:01 BoogieIcfgContainer [2019-10-02 16:30:01,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:01,260 INFO L168 Benchmark]: Toolchain (without parser) took 1482.40 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 89.2 MB in the beginning and 127.6 MB in the end (delta: -38.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,261 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.63 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 89.0 MB in the beginning and 180.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,263 INFO L168 Benchmark]: Boogie Preprocessor took 35.63 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,264 INFO L168 Benchmark]: RCFGBuilder took 305.51 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 164.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,265 INFO L168 Benchmark]: TraceAbstraction took 652.91 ms. Allocated memory is still 201.9 MB. Free memory was 164.9 MB in the beginning and 127.6 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:01,269 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 483.63 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 89.0 MB in the beginning and 180.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.63 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.51 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 164.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 652.91 ms. Allocated memory is still 201.9 MB. Free memory was 164.9 MB in the beginning and 127.6 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9423076923076923 AbsIntWeakeningRatio, 0.6923076923076923 AbsIntAvgWeakeningVarsNumRemoved, 0.46153846153846156 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...