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/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:46,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:46,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:46,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:46,749 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 13:25:46,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:46,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:46,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:46,767 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:46,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:46,768 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:46,768 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:46,769 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:46,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:46,769 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:46,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:46,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:46,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:46,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:46,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:46,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:46,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:46,771 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:46,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:46,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:46,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:46,772 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:46,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:46,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:46,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:46,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:46,773 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:46,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:46,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:46,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:46,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:46,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:46,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:46,819 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:46,819 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:46,820 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-09-20 13:25:46,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02c7952d/2658cccdd7354e7585b746980c6fcdf6/FLAG22656d650 [2019-09-20 13:25:47,315 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:47,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-09-20 13:25:47,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02c7952d/2658cccdd7354e7585b746980c6fcdf6/FLAG22656d650 [2019-09-20 13:25:47,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02c7952d/2658cccdd7354e7585b746980c6fcdf6 [2019-09-20 13:25:47,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:47,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:47,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:47,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:47,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:47,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:47" (1/1) ... [2019-09-20 13:25:47,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f74c9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:47, skipping insertion in model container [2019-09-20 13:25:47,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:47" (1/1) ... [2019-09-20 13:25:47,716 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:47,736 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:47,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:47,976 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:48,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:48,018 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:48,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48 WrapperNode [2019-09-20 13:25:48,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:48,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:48,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:48,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:48,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (1/1) ... [2019-09-20 13:25:48,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:48,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:48,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:48,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:48,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (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 13:25:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:48,415 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:48,415 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:48,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:48 BoogieIcfgContainer [2019-09-20 13:25:48,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:48,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:48,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:48,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:48,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:47" (1/3) ... [2019-09-20 13:25:48,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:48, skipping insertion in model container [2019-09-20 13:25:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:48" (2/3) ... [2019-09-20 13:25:48,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:48, skipping insertion in model container [2019-09-20 13:25:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:48" (3/3) ... [2019-09-20 13:25:48,426 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-09-20 13:25:48,436 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:48,444 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:48,464 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:48,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:48,499 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:48,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:48,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:48,500 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:48,500 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:48,500 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:48,500 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-20 13:25:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:25:48,537 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:48,539 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:48,541 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2019-09-20 13:25:48,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:48,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:48,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,614 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:48,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:48,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:48,723 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:48,729 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:48,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:48,750 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-20 13:25:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:48,772 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-20 13:25:48,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:48,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-20 13:25:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:48,786 INFO L225 Difference]: With dead ends: 19 [2019-09-20 13:25:48,787 INFO L226 Difference]: Without dead ends: 12 [2019-09-20 13:25:48,790 INFO L636 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 [2019-09-20 13:25:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-20 13:25:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-20 13:25:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-20 13:25:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-20 13:25:48,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2019-09-20 13:25:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:48,824 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-20 13:25:48,824 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-20 13:25:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:25:48,825 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:48,825 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:48,825 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:48,826 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2019-09-20 13:25:48,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:48,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:48,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:48,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:48,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:25:48,887 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:48,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:25:48,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:25:48,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:25:48,890 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-09-20 13:25:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:48,906 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-20 13:25:48,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:25:48,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-20 13:25:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:48,908 INFO L225 Difference]: With dead ends: 13 [2019-09-20 13:25:48,908 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:25:48,909 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 13:25:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:25:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 13:25:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 13:25:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 13:25:48,914 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-20 13:25:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:48,914 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 13:25:48,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:25:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 13:25:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 13:25:48,915 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:48,916 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:48,916 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2019-09-20 13:25:48,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:48,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:48,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:48,919 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:49,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:49,184 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:49,185 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2019-09-20 13:25:49,187 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [24], [27], [29], [35], [36], [37], [39] [2019-09-20 13:25:49,220 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:49,220 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:49,341 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:49,344 INFO L272 AbstractInterpreter]: Visited 12 different actions 44 times. Merged at 2 different actions 11 times. Widened at 1 different actions 3 times. Performed 87 root evaluator evaluations with a maximum evaluation depth of 5. Performed 87 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2019-09-20 13:25:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:49,349 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:49,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:49,350 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:49,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:49,370 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:49,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-20 13:25:49,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:49,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:49,584 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:49,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:49,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2019-09-20 13:25:49,699 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:49,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:25:49,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:25:49,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:49,703 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2019-09-20 13:25:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:49,836 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-09-20 13:25:49,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:25:49,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2019-09-20 13:25:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:49,838 INFO L225 Difference]: With dead ends: 17 [2019-09-20 13:25:49,838 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 13:25:49,839 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:25:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 13:25:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 13:25:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 13:25:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 13:25:49,843 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-20 13:25:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:49,843 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 13:25:49,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:25:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 13:25:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:25:49,844 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:49,844 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:49,845 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:49,845 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2019-09-20 13:25:49,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:49,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:49,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:49,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:49,848 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:25:50,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:50,026 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:50,026 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-20 13:25:50,026 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:25:50,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:50,027 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:50,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:25:50,054 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-20 13:25:50,070 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-20 13:25:50,070 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:25:50,071 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-20 13:25:50,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:50,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:50,223 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:50,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:50,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:50,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2019-09-20 13:25:50,321 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:50,322 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:25:50,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:25:50,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:25:50,323 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2019-09-20 13:25:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:50,559 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-09-20 13:25:50,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-20 13:25:50,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-09-20 13:25:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:50,560 INFO L225 Difference]: With dead ends: 14 [2019-09-20 13:25:50,562 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:50,563 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-09-20 13:25:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:50,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-20 13:25:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:50,565 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:50,565 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:25:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:50,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:50,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:50 BoogieIcfgContainer [2019-09-20 13:25:50,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:50,574 INFO L168 Benchmark]: Toolchain (without parser) took 2875.21 ms. Allocated memory was 131.6 MB in the beginning and 219.2 MB in the end (delta: 87.6 MB). Free memory was 87.8 MB in the beginning and 115.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,575 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.55 ms. Allocated memory is still 131.6 MB. Free memory was 87.6 MB in the beginning and 78.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,581 INFO L168 Benchmark]: Boogie Preprocessor took 117.83 ms. Allocated memory was 131.6 MB in the beginning and 197.7 MB in the end (delta: 66.1 MB). Free memory was 78.2 MB in the beginning and 175.1 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,583 INFO L168 Benchmark]: RCFGBuilder took 278.77 ms. Allocated memory is still 197.7 MB. Free memory was 174.5 MB in the beginning and 162.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,584 INFO L168 Benchmark]: TraceAbstraction took 2153.21 ms. Allocated memory was 197.7 MB in the beginning and 219.2 MB in the end (delta: 21.5 MB). Free memory was 162.3 MB in the beginning and 115.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:50,591 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.55 ms. Allocated memory is still 131.6 MB. Free memory was 87.6 MB in the beginning and 78.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.83 ms. Allocated memory was 131.6 MB in the beginning and 197.7 MB in the end (delta: 66.1 MB). Free memory was 78.2 MB in the beginning and 175.1 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 278.77 ms. Allocated memory is still 197.7 MB. Free memory was 174.5 MB in the beginning and 162.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2153.21 ms. Allocated memory was 197.7 MB in the beginning and 219.2 MB in the end (delta: 21.5 MB). Free memory was 162.3 MB in the beginning and 115.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 19 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 11 SDslu, 108 SDs, 0 SdLazy, 90 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 5241 SizeOfPredicates, 8 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...