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-crafted/bAnd4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:34:40,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:34:40,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:34:40,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:34:40,714 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 [2019-09-09 05:34:40,729 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:34:40,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:34:40,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:34:40,730 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:34:40,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:34:40,730 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:34:40,731 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:34:40,731 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:34:40,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:34:40,731 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:34:40,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:34:40,732 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:34:40,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:34:40,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:34:40,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:34:40,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:34:40,734 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:34:40,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:34:40,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:34:40,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:34:40,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:34:40,735 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:34:40,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:34:40,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:34:40,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:34:40,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:34:40,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:34:40,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:34:40,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:34:40,780 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:34:40,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd4.i [2019-09-09 05:34:40,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da39965/96f9304c078b43ada75ef9a7f3a912db/FLAG402a34869 [2019-09-09 05:34:41,268 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:34:41,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd4.i [2019-09-09 05:34:41,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da39965/96f9304c078b43ada75ef9a7f3a912db/FLAG402a34869 [2019-09-09 05:34:41,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da39965/96f9304c078b43ada75ef9a7f3a912db [2019-09-09 05:34:41,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:34:41,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:34:41,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:34:41,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:34:41,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:34:41,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:41,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebd57d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41, skipping insertion in model container [2019-09-09 05:34:41,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:41,670 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:34:41,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:34:41,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:34:41,929 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:34:41,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:34:41,966 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:34:41,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41 WrapperNode [2019-09-09 05:34:41,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:34:41,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:34:41,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:34:41,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:34:42,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (1/1) ... [2019-09-09 05:34:42,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:34:42,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:34:42,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:34:42,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:34:42,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (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 [2019-09-09 05:34:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:34:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:34:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2019-09-09 05:34:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:34:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:34:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:34:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2019-09-09 05:34:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:34:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:34:42,464 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:34:42,465 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-09 05:34:42,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:34:42 BoogieIcfgContainer [2019-09-09 05:34:42,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:34:42,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:34:42,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:34:42,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:34:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:34:41" (1/3) ... [2019-09-09 05:34:42,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c50840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:34:42, skipping insertion in model container [2019-09-09 05:34:42,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:41" (2/3) ... [2019-09-09 05:34:42,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c50840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:34:42, skipping insertion in model container [2019-09-09 05:34:42,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:34:42" (3/3) ... [2019-09-09 05:34:42,473 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd4.i [2019-09-09 05:34:42,480 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:34:42,487 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:34:42,503 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:34:42,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:34:42,526 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:34:42,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:34:42,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:34:42,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:34:42,526 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:34:42,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:34:42,527 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:34:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-09-09 05:34:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-09 05:34:42,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:42,550 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:42,552 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:42,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2019-09-09 05:34:42,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:42,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:42,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,600 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-09 05:34:42,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:34:42,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:34:42,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:42,711 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:34:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:34:42,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:34:42,729 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-09-09 05:34:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:42,746 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-09-09 05:34:42,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:34:42,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-09-09 05:34:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:42,754 INFO L225 Difference]: With dead ends: 31 [2019-09-09 05:34:42,754 INFO L226 Difference]: Without dead ends: 26 [2019-09-09 05:34:42,755 INFO L628 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 [2019-09-09 05:34:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-09 05:34:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-09 05:34:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-09 05:34:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-09 05:34:42,793 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2019-09-09 05:34:42,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:42,794 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-09 05:34:42,794 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:34:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-09 05:34:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-09 05:34:42,796 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:42,796 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:42,796 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2019-09-09 05:34:42,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:42,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:42,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,798 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-09 05:34:42,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:34:42,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:34:42,880 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:42,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:34:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:34:42,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:34:42,883 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2019-09-09 05:34:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:42,899 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-09-09 05:34:42,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:34:42,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-09 05:34:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:42,901 INFO L225 Difference]: With dead ends: 28 [2019-09-09 05:34:42,901 INFO L226 Difference]: Without dead ends: 28 [2019-09-09 05:34:42,902 INFO L628 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 [2019-09-09 05:34:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-09 05:34:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-09-09 05:34:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-09 05:34:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-09 05:34:42,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2019-09-09 05:34:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:42,911 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-09 05:34:42,911 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:34:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-09 05:34:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-09 05:34:42,914 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:42,915 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:42,916 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1487444845, now seen corresponding path program 1 times [2019-09-09 05:34:42,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:42,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:42,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:42,919 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-09 05:34:43,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:34:43,001 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:34:43,002 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2019-09-09 05:34:43,005 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [16], [17], [21], [27], [29], [31], [36], [38], [44], [52], [54], [57], [58], [65], [66], [67], [69], [70], [71], [72], [73], [74] [2019-09-09 05:34:43,039 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:34:43,039 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:34:43,097 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:34:43,099 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 28 variables. [2019-09-09 05:34:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:43,102 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:34:43,138 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:34:43,138 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:34:43,141 INFO L420 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2019-09-09 05:34:43,142 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:34:43,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:34:43,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2019-09-09 05:34:43,143 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:43,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:34:43,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:34:43,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:34:43,145 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 2 states. [2019-09-09 05:34:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:43,145 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:34:43,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:34:43,146 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2019-09-09 05:34:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:43,146 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:34:43,147 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:34:43,147 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:34:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:34:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:34:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:34:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:34:43,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-09-09 05:34:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:43,149 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:34:43,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:34:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:34:43,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:34:43,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:34:43 BoogieIcfgContainer [2019-09-09 05:34:43,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:34:43,158 INFO L168 Benchmark]: Toolchain (without parser) took 1501.48 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 89.4 MB in the beginning and 116.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,159 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.55 ms. Allocated memory is still 132.6 MB. Free memory was 89.2 MB in the beginning and 78.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,161 INFO L168 Benchmark]: Boogie Preprocessor took 132.64 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 78.7 MB in the beginning and 175.5 MB in the end (delta: -96.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,162 INFO L168 Benchmark]: RCFGBuilder took 366.63 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 159.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,163 INFO L168 Benchmark]: TraceAbstraction took 687.53 ms. Allocated memory is still 199.8 MB. Free memory was 159.2 MB in the beginning and 116.6 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:43,168 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.55 ms. Allocated memory is still 132.6 MB. Free memory was 89.2 MB in the beginning and 78.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.64 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 78.7 MB in the beginning and 175.5 MB in the end (delta: -96.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.63 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 159.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 687.53 ms. Allocated memory is still 199.8 MB. Free memory was 159.2 MB in the beginning and 116.6 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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, 31 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 1 SDslu, 26 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0.946969696969697 AbsIntWeakeningRatio, 1.393939393939394 AbsIntAvgWeakeningVarsNumRemoved, 0.18181818181818182 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 38/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...