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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:34,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:34,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:34,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:34,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:34,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:34,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:34,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:34,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:34,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:34,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:34,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:34,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:34,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:34,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:34,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:34,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:34,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:34,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:34,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:34,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:34,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:34,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:34,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:34,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:34,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:34,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:34,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:34,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:34,668 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:34,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:34,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:34,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:34,671 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:34,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:34,671 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:34,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:34,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:34,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:34,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:34,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:34,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:34,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:34,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:34,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:34,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:34,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:34,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:34,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:34,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:34,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:34,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:34,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:34,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:34,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:34,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:34,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:34,983 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:34,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-10-13 19:53:35,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555ac9174/807b3ae02a9140b9a905c897e365d808/FLAGe0eb2ddba [2019-10-13 19:53:35,489 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:35,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-10-13 19:53:35,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555ac9174/807b3ae02a9140b9a905c897e365d808/FLAGe0eb2ddba [2019-10-13 19:53:35,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555ac9174/807b3ae02a9140b9a905c897e365d808 [2019-10-13 19:53:35,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:35,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:35,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:35,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:35,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:35,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:35" (1/1) ... [2019-10-13 19:53:35,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0cb938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:35, skipping insertion in model container [2019-10-13 19:53:35,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:35" (1/1) ... [2019-10-13 19:53:35,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:35,901 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:36,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:36,104 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:36,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:36,148 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:36,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36 WrapperNode [2019-10-13 19:53:36,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:36,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:36,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:36,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:36,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:36,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:36,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:36,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:36,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (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 [2019-10-13 19:53:36,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:36,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:36,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:36,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:36,613 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:36,613 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:53:36,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:36 BoogieIcfgContainer [2019-10-13 19:53:36,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:36,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:36,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:36,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:36,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:35" (1/3) ... [2019-10-13 19:53:36,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcafc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:36, skipping insertion in model container [2019-10-13 19:53:36,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (2/3) ... [2019-10-13 19:53:36,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcafc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:36, skipping insertion in model container [2019-10-13 19:53:36,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:36" (3/3) ... [2019-10-13 19:53:36,625 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_vector_difference_ground.i [2019-10-13 19:53:36,636 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:36,644 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:36,666 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:36,690 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:36,690 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:36,690 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:36,691 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:36,691 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:36,691 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:36,691 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:36,691 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-13 19:53:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:53:36,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:36,715 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:36,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:36,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1498727252, now seen corresponding path program 1 times [2019-10-13 19:53:36,729 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:36,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486985789] [2019-10-13 19:53:36,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:36,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:36,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:36,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486985789] [2019-10-13 19:53:36,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:36,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:36,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979448795] [2019-10-13 19:53:36,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:36,867 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:36,880 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-10-13 19:53:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:36,901 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-13 19:53:36,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:36,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-13 19:53:36,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:36,909 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:53:36,909 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 19:53:36,912 INFO L600 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 [2019-10-13 19:53:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 19:53:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 19:53:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 19:53:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-13 19:53:36,945 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2019-10-13 19:53:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:36,946 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-13 19:53:36,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-13 19:53:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:53:36,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:36,948 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:36,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash 756064934, now seen corresponding path program 1 times [2019-10-13 19:53:36,949 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:36,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042164834] [2019-10-13 19:53:36,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:36,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:36,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:37,017 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042164834] [2019-10-13 19:53:37,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:37,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:37,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061175515] [2019-10-13 19:53:37,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:37,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:37,022 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-10-13 19:53:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,078 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-10-13 19:53:37,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:37,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 19:53:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,080 INFO L225 Difference]: With dead ends: 37 [2019-10-13 19:53:37,080 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 19:53:37,081 INFO L600 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 [2019-10-13 19:53:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 19:53:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-10-13 19:53:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 19:53:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-13 19:53:37,088 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-10-13 19:53:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,089 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-13 19:53:37,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-13 19:53:37,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:53:37,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,090 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:37,091 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,091 INFO L82 PathProgramCache]: Analyzing trace with hash 434016106, now seen corresponding path program 1 times [2019-10-13 19:53:37,092 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941718917] [2019-10-13 19:53:37,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:37,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941718917] [2019-10-13 19:53:37,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607829003] [2019-10-13 19:53:37,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:37,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:37,305 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:37,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [869212116] [2019-10-13 19:53:37,354 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-13 19:53:37,395 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:37,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:37,454 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:37,456 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. [2019-10-13 19:53:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,460 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:37,497 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:37,497 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:37,499 INFO L553 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-10-13 19:53:37,499 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:37,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:37,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:37,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265622798] [2019-10-13 19:53:37,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:37,501 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,502 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:37,502 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 2 states. [2019-10-13 19:53:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,507 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-13 19:53:37,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:37,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-13 19:53:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,508 INFO L225 Difference]: With dead ends: 23 [2019-10-13 19:53:37,508 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:37,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:37,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-13 19:53:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,512 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:37,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:37,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:37,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:37,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:37,765 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:37,766 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:37,766 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:37,766 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:37,767 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:37,767 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:37,767 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:37,767 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 26) no Hoare annotation was computed. [2019-10-13 19:53:37,767 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: false [2019-10-13 19:53:37,767 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-10-13 19:53:37,768 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: false [2019-10-13 19:53:37,768 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2019-10-13 19:53:37,768 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 26) no Hoare annotation was computed. [2019-10-13 19:53:37,768 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2019-10-13 19:53:37,768 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 15) the Hoare annotation is: false [2019-10-13 19:53:37,768 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 15) no Hoare annotation was computed. [2019-10-13 19:53:37,769 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 26) the Hoare annotation is: true [2019-10-13 19:53:37,769 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2019-10-13 19:53:37,769 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: false [2019-10-13 19:53:37,769 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2019-10-13 19:53:37,769 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:37,770 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:37,772 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:37,772 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:37,773 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:37,773 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:37,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:37 BoogieIcfgContainer [2019-10-13 19:53:37,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:37,784 INFO L168 Benchmark]: Toolchain (without parser) took 1920.59 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 102.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,785 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.08 ms. Allocated memory is still 135.8 MB. Free memory was 100.5 MB in the beginning and 90.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,787 INFO L168 Benchmark]: Boogie Preprocessor took 122.36 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 177.4 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,788 INFO L168 Benchmark]: RCFGBuilder took 342.84 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 161.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,789 INFO L168 Benchmark]: TraceAbstraction took 1165.80 ms. Allocated memory is still 199.2 MB. Free memory was 161.5 MB in the beginning and 102.6 MB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:37,793 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.08 ms. Allocated memory is still 135.8 MB. Free memory was 100.5 MB in the beginning and 90.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.36 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 177.4 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.84 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 161.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1165.80 ms. Allocated memory is still 199.2 MB. Free memory was 161.5 MB in the beginning and 102.6 MB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 1 SDslu, 16 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 106, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8970588235294118, AVG_VARS_REMOVED_DURING_WEAKENING: 1.1176470588235294, AVG_WEAKENED_CONJUNCTS: 0.35294117647058826, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...