/usr/bin/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_init2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:48,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:48,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:48,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:48,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:48,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:48,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:48,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:48,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:48,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:48,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:48,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:48,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:48,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:48,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:48,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:48,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:48,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:48,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:48,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:48,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:48,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:48,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:48,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:48,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:26:48,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:26:48,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:26:48,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:26:48,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:26:48,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:26:48,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:26:48,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:26:48,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:26:48,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:26:48,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:26:48,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:26:48,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:26:48,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:26:48,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:48,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:48,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:48,282 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 [2019-11-06 22:26:48,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:48,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:48,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:48,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:48,320 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:48,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:48,321 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:48,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:48,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:48,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:48,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:48,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:48,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:48,322 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:48,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:48,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:48,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:48,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:48,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:48,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:48,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:48,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:48,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:48,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:48,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:48,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:48,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:48,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:48,330 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 [2019-11-06 22:26:48,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:48,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:48,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:48,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:48,649 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:48,650 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init2_ground-2.i [2019-11-06 22:26:48,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe863da0/3ad9bee8537b4bd591f520e66f573c35/FLAGc1a9d755b [2019-11-06 22:26:49,152 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:49,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init2_ground-2.i [2019-11-06 22:26:49,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe863da0/3ad9bee8537b4bd591f520e66f573c35/FLAGc1a9d755b [2019-11-06 22:26:49,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe863da0/3ad9bee8537b4bd591f520e66f573c35 [2019-11-06 22:26:49,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:49,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:49,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:49,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:49,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:49,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3817503a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49, skipping insertion in model container [2019-11-06 22:26:49,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,556 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:49,576 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:49,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:49,766 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:49,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:49,813 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:49,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49 WrapperNode [2019-11-06 22:26:49,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:49,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:49,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:49,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:49,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (1/1) ... [2019-11-06 22:26:49,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:49,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:49,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:49,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:49,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (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 [2019-11-06 22:26:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:50,218 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:50,219 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:26:50,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:50 BoogieIcfgContainer [2019-11-06 22:26:50,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:50,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:50,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:50,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:50,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:49" (1/3) ... [2019-11-06 22:26:50,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36470188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:50, skipping insertion in model container [2019-11-06 22:26:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:49" (2/3) ... [2019-11-06 22:26:50,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36470188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:50, skipping insertion in model container [2019-11-06 22:26:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:50" (3/3) ... [2019-11-06 22:26:50,231 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init2_ground-2.i [2019-11-06 22:26:50,242 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:50,250 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:50,278 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:50,302 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:50,302 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:50,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:50,302 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:50,302 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:50,302 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:50,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:50,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-06 22:26:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:26:50,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:50,326 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:50,328 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2104113866, now seen corresponding path program 1 times [2019-11-06 22:26:50,341 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:50,341 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267440585] [2019-11-06 22:26:50,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:50,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267440585] [2019-11-06 22:26:50,463 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:50,463 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:50,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294765674] [2019-11-06 22:26:50,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:50,469 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:50,484 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-06 22:26:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:50,509 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-06 22:26:50,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:50,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:26:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:50,519 INFO L225 Difference]: With dead ends: 43 [2019-11-06 22:26:50,520 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 22:26:50,523 INFO L630 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 [2019-11-06 22:26:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 22:26:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 22:26:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 22:26:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-06 22:26:50,559 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-11-06 22:26:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:50,560 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-06 22:26:50,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-06 22:26:50,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:26:50,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:50,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:50,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:50,562 INFO L82 PathProgramCache]: Analyzing trace with hash 743997126, now seen corresponding path program 1 times [2019-11-06 22:26:50,562 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:50,563 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260398111] [2019-11-06 22:26:50,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:50,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260398111] [2019-11-06 22:26:50,614 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:50,615 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:50,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428530073] [2019-11-06 22:26:50,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:50,617 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:50,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:50,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:50,618 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-11-06 22:26:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:50,648 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-06 22:26:50,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:50,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:26:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:50,650 INFO L225 Difference]: With dead ends: 35 [2019-11-06 22:26:50,650 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 22:26:50,652 INFO L630 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 [2019-11-06 22:26:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 22:26:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-06 22:26:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-06 22:26:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-06 22:26:50,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-11-06 22:26:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:50,659 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-06 22:26:50,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-06 22:26:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 22:26:50,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:50,661 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:50,661 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash 494025381, now seen corresponding path program 1 times [2019-11-06 22:26:50,662 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:50,662 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577602449] [2019-11-06 22:26:50,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:50,741 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577602449] [2019-11-06 22:26:50,741 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094391690] [2019-11-06 22:26:50,742 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 [2019-11-06 22:26:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:50,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:50,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:50,852 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:50,892 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1066260195] [2019-11-06 22:26:50,902 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-11-06 22:26:50,957 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:50,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:51,023 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:51,025 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-11-06 22:26:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:51,028 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:51,063 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:51,064 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:51,066 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-11-06 22:26:51,066 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:51,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:51,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:51,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142833255] [2019-11-06 22:26:51,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:51,068 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:51,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:51,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:51,069 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 2 states. [2019-11-06 22:26:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:51,072 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-11-06 22:26:51,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:51,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-06 22:26:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:51,072 INFO L225 Difference]: With dead ends: 22 [2019-11-06 22:26:51,073 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:51,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:51,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-06 22:26:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:51,075 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:51,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:51,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:51,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:51,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:51,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:51,319 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:51,319 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:51,319 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:51,319 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:51,319 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:51,320 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:51,320 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:51,320 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 20) no Hoare annotation was computed. [2019-11-06 22:26:51,320 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: false [2019-11-06 22:26:51,320 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-06 22:26:51,320 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 20) no Hoare annotation was computed. [2019-11-06 22:26:51,321 INFO L439 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: false [2019-11-06 22:26:51,321 INFO L443 ceAbstractionStarter]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-11-06 22:26:51,321 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 20) the Hoare annotation is: true [2019-11-06 22:26:51,321 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2019-11-06 22:26:51,321 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 18) the Hoare annotation is: false [2019-11-06 22:26:51,322 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2019-11-06 22:26:51,322 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 6 9) the Hoare annotation is: false [2019-11-06 22:26:51,322 INFO L443 ceAbstractionStarter]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-11-06 22:26:51,322 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:51,322 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:51,322 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:51,323 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:51,323 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:51,323 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:51,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:51 BoogieIcfgContainer [2019-11-06 22:26:51,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:51,335 INFO L168 Benchmark]: Toolchain (without parser) took 1798.35 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 107.0 MB in the beginning and 114.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:51,336 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 142.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:26:51,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.43 ms. Allocated memory is still 142.1 MB. Free memory was 106.6 MB in the beginning and 97.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:51,338 INFO L168 Benchmark]: Boogie Preprocessor took 113.57 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 183.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:51,339 INFO L168 Benchmark]: RCFGBuilder took 293.13 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 170.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:51,340 INFO L168 Benchmark]: TraceAbstraction took 1110.68 ms. Allocated memory is still 205.5 MB. Free memory was 169.2 MB in the beginning and 114.4 MB in the end (delta: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:51,345 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 142.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.43 ms. Allocated memory is still 142.1 MB. Free memory was 106.6 MB in the beginning and 97.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.57 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 183.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.13 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 170.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1110.68 ms. Allocated memory is still 205.5 MB. Free memory was 169.2 MB in the beginning and 114.4 MB in the end (delta: 54.8 MB). Peak memory consumption was 54.8 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: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0 StatesRemovedByMinimization, 0 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 1380 SizeOfPredicates, 1 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 128, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.953125, AVG_VARS_REMOVED_DURING_WEAKENING: 0.625, AVG_WEAKENED_CONJUNCTS: 0.375, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...