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/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:43,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:43,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:43,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:43,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:43,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:43,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:43,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:43,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:43,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:43,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:43,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:43,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:43,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:43,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:43,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:43,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:43,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:43,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:43,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:43,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:43,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:43,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:43,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:43,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:05:43,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:43,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:43,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:43,377 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 21:05:43,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:43,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:43,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:43,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:43,400 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:43,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:43,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:43,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:43,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:43,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:43,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:43,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:43,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:43,402 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:43,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:43,402 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:43,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:43,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:43,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:43,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:43,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:43,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:43,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:43,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:43,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:43,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:43,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:43,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:43,405 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 21:05:43,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:43,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:43,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:43,727 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:43,728 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:43,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2019-10-13 21:05:43,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084394df9/a578e739d0cd4cadb6bbb76edfc08f28/FLAG473d27c3e [2019-10-13 21:05:44,290 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:44,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2019-10-13 21:05:44,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084394df9/a578e739d0cd4cadb6bbb76edfc08f28/FLAG473d27c3e [2019-10-13 21:05:44,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084394df9/a578e739d0cd4cadb6bbb76edfc08f28 [2019-10-13 21:05:44,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:44,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:44,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:44,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:44,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:44,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6ff8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44, skipping insertion in model container [2019-10-13 21:05:44,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,701 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:44,719 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:05:44,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:44,941 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:05:44,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:45,113 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:05:45,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45 WrapperNode [2019-10-13 21:05:45,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:45,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:05:45,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:05:45,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:05:45,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (1/1) ... [2019-10-13 21:05:45,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:05:45,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:05:45,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:05:45,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:05:45,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (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 21:05:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:05:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:05:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:05:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:05:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:05:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:05:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:05:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:05:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:05:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:05:45,531 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:05:45,532 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:05:45,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:45 BoogieIcfgContainer [2019-10-13 21:05:45,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:05:45,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:05:45,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:05:45,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:05:45,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:44" (1/3) ... [2019-10-13 21:05:45,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e37520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:45, skipping insertion in model container [2019-10-13 21:05:45,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:45" (2/3) ... [2019-10-13 21:05:45,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e37520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:45, skipping insertion in model container [2019-10-13 21:05:45,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:45" (3/3) ... [2019-10-13 21:05:45,550 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2019-10-13 21:05:45,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:05:45,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:05:45,581 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:05:45,605 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:05:45,605 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:05:45,605 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:05:45,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:05:45,606 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:05:45,606 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:05:45,606 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:05:45,606 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:05:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 21:05:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:05:45,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:45,628 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:45,630 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1079158542, now seen corresponding path program 1 times [2019-10-13 21:05:45,644 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:45,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215934142] [2019-10-13 21:05:45,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:45,862 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 21:05:45,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215934142] [2019-10-13 21:05:45,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:45,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:05:45,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643366673] [2019-10-13 21:05:45,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:05:45,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:05:45,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:05:45,885 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-13 21:05:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:46,037 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2019-10-13 21:05:46,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:05:46,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-13 21:05:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:46,047 INFO L225 Difference]: With dead ends: 56 [2019-10-13 21:05:46,047 INFO L226 Difference]: Without dead ends: 30 [2019-10-13 21:05:46,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:05:46,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-13 21:05:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2019-10-13 21:05:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:05:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-13 21:05:46,100 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2019-10-13 21:05:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:46,101 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-13 21:05:46,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:05:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-13 21:05:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:05:46,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:46,103 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:46,103 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -476045897, now seen corresponding path program 1 times [2019-10-13 21:05:46,105 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:46,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185773983] [2019-10-13 21:05:46,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:46,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:46,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:46,186 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 21:05:46,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185773983] [2019-10-13 21:05:46,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:46,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:05:46,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37911760] [2019-10-13 21:05:46,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:05:46,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:46,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:05:46,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:05:46,191 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2019-10-13 21:05:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:46,202 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-10-13 21:05:46,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:05:46,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 21:05:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:46,204 INFO L225 Difference]: With dead ends: 36 [2019-10-13 21:05:46,204 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 21:05:46,205 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 21:05:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 21:05:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-10-13 21:05:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:05:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-13 21:05:46,212 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2019-10-13 21:05:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:46,213 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-13 21:05:46,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:05:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-13 21:05:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:05:46,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:46,214 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:46,215 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1393486425, now seen corresponding path program 1 times [2019-10-13 21:05:46,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:46,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683781504] [2019-10-13 21:05:46,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:46,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:46,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:46,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683781504] [2019-10-13 21:05:46,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733502962] [2019-10-13 21:05:46,537 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 21:05:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:46,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:05:46,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:46,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:05:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:46,755 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:46,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:05:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:46,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1773554393] [2019-10-13 21:05:46,924 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-13 21:05:46,963 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:05:46,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:05:47,038 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:05:47,040 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 23 variables. [2019-10-13 21:05:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:47,044 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:05:47,082 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:05:47,083 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:05:47,085 INFO L553 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-10-13 21:05:47,086 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:05:47,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:05:47,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 7, 7] total 14 [2019-10-13 21:05:47,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51538346] [2019-10-13 21:05:47,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:47,091 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:47,091 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:05:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:47,092 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 2 states. [2019-10-13 21:05:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:47,096 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-13 21:05:47,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:47,097 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-13 21:05:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:47,097 INFO L225 Difference]: With dead ends: 25 [2019-10-13 21:05:47,097 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:05:47,098 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 21:05:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:05:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:05:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:05:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:05:47,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-13 21:05:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:47,100 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:05:47,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:05:47,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:05:47,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:47,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:05:47,348 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:47,349 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:47,349 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:47,349 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:47,349 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:05:47,350 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:47,350 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:47,350 INFO L439 ceAbstractionStarter]: At program point L31-2(lines 31 37) the Hoare annotation is: false [2019-10-13 21:05:47,350 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 20 47) no Hoare annotation was computed. [2019-10-13 21:05:47,350 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 47) no Hoare annotation was computed. [2019-10-13 21:05:47,350 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 47) no Hoare annotation was computed. [2019-10-13 21:05:47,351 INFO L439 ceAbstractionStarter]: At program point L40-2(lines 40 44) the Hoare annotation is: false [2019-10-13 21:05:47,351 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: false [2019-10-13 21:05:47,351 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-10-13 21:05:47,351 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 19 47) the Hoare annotation is: true [2019-10-13 21:05:47,351 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: false [2019-10-13 21:05:47,351 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-13 21:05:47,352 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 45) no Hoare annotation was computed. [2019-10-13 21:05:47,352 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-10-13 21:05:47,353 INFO L443 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-10-13 21:05:47,353 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2019-10-13 21:05:47,353 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-13 21:05:47,353 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 9 15) no Hoare annotation was computed. [2019-10-13 21:05:47,353 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-13 21:05:47,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:05:47 BoogieIcfgContainer [2019-10-13 21:05:47,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:05:47,367 INFO L168 Benchmark]: Toolchain (without parser) took 2681.01 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 103.9 MB in the beginning and 181.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:47,370 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:05:47,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.42 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.9 MB in the beginning and 183.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:47,374 INFO L168 Benchmark]: Boogie Preprocessor took 66.04 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 180.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:47,375 INFO L168 Benchmark]: RCFGBuilder took 357.10 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 166.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:47,382 INFO L168 Benchmark]: TraceAbstraction took 1821.75 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 165.8 MB in the beginning and 181.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:47,389 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 431.42 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.9 MB in the beginning and 183.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.04 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 180.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.10 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 166.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1821.75 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 165.8 MB in the beginning and 181.3 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 14 SDslu, 73 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=1, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 9 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 6305 SizeOfPredicates, 3 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 120, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9264705882352942, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9411764705882353, 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...