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 -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:27:34,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:27:34,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:27:34,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:27:34,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:27:34,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:27:34,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:27:34,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:27:34,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:27:34,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:27:34,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:27:34,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:27:34,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:27:34,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:27:34,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:27:34,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:27:34,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:27:34,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:27:34,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:27:34,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:27:34,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:27:34,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:27:34,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:27:34,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:27:34,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 06:27:34,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 06:27:34,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 06:27:34,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 06:27:34,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 06:27:34,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 06:27:34,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:27:34,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:27:34,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:27:34,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:27:34,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:27:34,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:27:34,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:27:34,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:27:34,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:27:34,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:27:34,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:27:34,167 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 [2019-09-08 06:27:34,209 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:27:34,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:27:34,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:27:34,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:27:34,213 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:27:34,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:27:34,214 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:27:34,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:27:34,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:27:34,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:27:34,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:27:34,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:27:34,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:27:34,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:27:34,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:27:34,220 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:27:34,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:27:34,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:27:34,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:27:34,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:27:34,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:27:34,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:27:34,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:27:34,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:27:34,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:27:34,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:27:34,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:27:34,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:27:34,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:27:34,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:27:34,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:27:34,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:27:34,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:27:34,312 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:27:34,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2019-09-08 06:27:34,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddac0a0d/1db883f74d5546b1a4e43526ab0af7ba/FLAG5fc836b57 [2019-09-08 06:27:34,933 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:27:34,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2019-09-08 06:27:34,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddac0a0d/1db883f74d5546b1a4e43526ab0af7ba/FLAG5fc836b57 [2019-09-08 06:27:35,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddac0a0d/1db883f74d5546b1a4e43526ab0af7ba [2019-09-08 06:27:35,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:27:35,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:27:35,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:35,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:27:35,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:27:35,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449bc8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35, skipping insertion in model container [2019-09-08 06:27:35,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,355 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:27:35,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:27:35,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:35,591 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:27:35,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:35,621 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:27:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35 WrapperNode [2019-09-08 06:27:35,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:35,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:27:35,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:27:35,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:27:35,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... [2019-09-08 06:27:35,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:27:35,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:27:35,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:27:35,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:27:35,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:27:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:27:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:27:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-09-08 06:27:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-09-08 06:27:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:27:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:27:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:27:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-09-08 06:27:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-09-08 06:27:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:27:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:27:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:27:36,033 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:27:36,034 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:27:36,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:36 BoogieIcfgContainer [2019-09-08 06:27:36,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:27:36,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:27:36,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:27:36,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:27:36,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:27:35" (1/3) ... [2019-09-08 06:27:36,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547b34a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:36, skipping insertion in model container [2019-09-08 06:27:36,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:35" (2/3) ... [2019-09-08 06:27:36,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547b34a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:36, skipping insertion in model container [2019-09-08 06:27:36,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:36" (3/3) ... [2019-09-08 06:27:36,048 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2019-09-08 06:27:36,060 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:27:36,070 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:27:36,087 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:27:36,128 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:27:36,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:27:36,130 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:27:36,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:27:36,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:27:36,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:27:36,130 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:27:36,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:27:36,131 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:27:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-08 06:27:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 06:27:36,170 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:36,171 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:36,173 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:36,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2019-09-08 06:27:36,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:36,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:36,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:36,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:27:36,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:36,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:36,444 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:36,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:36,472 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-09-08 06:27:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:36,594 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-09-08 06:27:36,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:36,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 06:27:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:36,606 INFO L225 Difference]: With dead ends: 36 [2019-09-08 06:27:36,606 INFO L226 Difference]: Without dead ends: 24 [2019-09-08 06:27:36,610 INFO L628 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 [2019-09-08 06:27:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-08 06:27:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-08 06:27:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-08 06:27:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-08 06:27:36,656 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2019-09-08 06:27:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:36,657 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-08 06:27:36,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-08 06:27:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 06:27:36,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:36,659 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:36,660 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2019-09-08 06:27:36,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:36,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:36,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:36,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:27:36,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:36,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 06:27:36,771 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 06:27:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 06:27:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 06:27:36,773 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2019-09-08 06:27:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:36,918 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-09-08 06:27:36,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:27:36,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-08 06:27:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:36,921 INFO L225 Difference]: With dead ends: 33 [2019-09-08 06:27:36,922 INFO L226 Difference]: Without dead ends: 29 [2019-09-08 06:27:36,924 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:27:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-08 06:27:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-08 06:27:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 06:27:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-09-08 06:27:36,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2019-09-08 06:27:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:36,935 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-09-08 06:27:36,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 06:27:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-09-08 06:27:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-08 06:27:36,937 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:36,937 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:36,938 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2019-09-08 06:27:36,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:36,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:36,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:36,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:37,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:37,128 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:27:37,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:27:37,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:37,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:37,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-09-08 06:27:37,263 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:27:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:27:37,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:27:37,264 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2019-09-08 06:27:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,405 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-09-08 06:27:37,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:27:37,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-09-08 06:27:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,410 INFO L225 Difference]: With dead ends: 39 [2019-09-08 06:27:37,411 INFO L226 Difference]: Without dead ends: 35 [2019-09-08 06:27:37,412 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-08 06:27:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-08 06:27:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-09-08 06:27:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 06:27:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-09-08 06:27:37,421 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2019-09-08 06:27:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,422 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-09-08 06:27:37,422 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:27:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-09-08 06:27:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-08 06:27:37,424 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,424 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,425 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2019-09-08 06:27:37,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:37,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:27:37,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:37,555 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:27:37,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 06:27:37,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:27:37,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:37,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-09-08 06:27:37,674 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 06:27:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 06:27:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:27:37,675 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2019-09-08 06:27:37,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,792 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2019-09-08 06:27:37,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 06:27:37,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-09-08 06:27:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,794 INFO L225 Difference]: With dead ends: 45 [2019-09-08 06:27:37,795 INFO L226 Difference]: Without dead ends: 41 [2019-09-08 06:27:37,796 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-09-08 06:27:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-08 06:27:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2019-09-08 06:27:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-08 06:27:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-09-08 06:27:37,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2019-09-08 06:27:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,805 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-09-08 06:27:37,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 06:27:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-09-08 06:27:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-08 06:27:37,807 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,807 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,808 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2019-09-08 06:27:37,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:37,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:27:37,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:37,980 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:38,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 06:27:38,030 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:27:38,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:38,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 06:27:38,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:27:38,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:38,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-09-08 06:27:38,063 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 06:27:38,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 06:27:38,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-08 06:27:38,064 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2019-09-08 06:27:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:38,224 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2019-09-08 06:27:38,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 06:27:38,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-09-08 06:27:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:38,226 INFO L225 Difference]: With dead ends: 51 [2019-09-08 06:27:38,227 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 06:27:38,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:27:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 06:27:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2019-09-08 06:27:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-08 06:27:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-09-08 06:27:38,237 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2019-09-08 06:27:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:38,238 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-09-08 06:27:38,238 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 06:27:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-09-08 06:27:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 06:27:38,240 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:38,241 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:38,241 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2019-09-08 06:27:38,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:38,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:38,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:27:38,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 06:27:38,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:38,593 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:27:38,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:38,648 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:27:38,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:38,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 06:27:38,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:27:38,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:38,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-09-08 06:27:38,730 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 06:27:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 06:27:38,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:27:38,733 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2019-09-08 06:27:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:38,865 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-09-08 06:27:38,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 06:27:38,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2019-09-08 06:27:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:38,868 INFO L225 Difference]: With dead ends: 57 [2019-09-08 06:27:38,868 INFO L226 Difference]: Without dead ends: 53 [2019-09-08 06:27:38,870 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:27:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-08 06:27:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2019-09-08 06:27:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 06:27:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-09-08 06:27:38,879 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2019-09-08 06:27:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:38,879 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-09-08 06:27:38,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 06:27:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-09-08 06:27:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 06:27:38,881 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:38,881 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:38,882 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:38,883 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2019-09-08 06:27:38,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:38,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:38,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:27:38,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 06:27:39,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:39,154 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:27:39,186 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:39,226 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-08 06:27:39,226 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:39,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 06:27:39,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 06:27:39,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:27:39,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2019-09-08 06:27:39,481 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 06:27:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 06:27:39,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2019-09-08 06:27:39,484 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 23 states. [2019-09-08 06:27:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:40,842 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2019-09-08 06:27:40,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-08 06:27:40,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2019-09-08 06:27:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:40,843 INFO L225 Difference]: With dead ends: 127 [2019-09-08 06:27:40,843 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 06:27:40,847 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=417, Invalid=2133, Unknown=0, NotChecked=0, Total=2550 [2019-09-08 06:27:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 06:27:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 06:27:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 06:27:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 06:27:40,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2019-09-08 06:27:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:40,848 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 06:27:40,848 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 06:27:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 06:27:40,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 06:27:40,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 06:27:40,992 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 06:27:40,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:40,993 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= |id2_#in~x| id2_~x) (<= id2_~x |id2_#in~x|) (not (= id2_~x 0))) [2019-09-08 06:27:40,993 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-09-08 06:27:40,993 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-09-08 06:27:40,993 INFO L443 ceAbstractionStarter]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2019-09-08 06:27:40,993 INFO L446 ceAbstractionStarter]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2019-09-08 06:27:40,994 INFO L443 ceAbstractionStarter]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2019-09-08 06:27:40,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:40,994 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 06:27:40,994 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 06:27:40,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 06:27:40,994 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2019-09-08 06:27:40,994 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2019-09-08 06:27:40,995 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-09-08 06:27:40,995 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-09-08 06:27:40,995 INFO L439 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2019-09-08 06:27:40,995 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-09-08 06:27:40,995 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2019-09-08 06:27:40,996 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-09-08 06:27:40,996 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2019-09-08 06:27:40,996 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2019-09-08 06:27:40,996 INFO L439 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2019-09-08 06:27:40,996 INFO L443 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-09-08 06:27:40,996 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-09-08 06:27:40,997 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2019-09-08 06:27:41,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:27:41 BoogieIcfgContainer [2019-09-08 06:27:41,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:27:41,005 INFO L168 Benchmark]: Toolchain (without parser) took 5678.56 ms. Allocated memory was 135.3 MB in the beginning and 256.4 MB in the end (delta: 121.1 MB). Free memory was 92.2 MB in the beginning and 129.8 MB in the end (delta: -37.6 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,006 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.27 ms. Allocated memory is still 135.3 MB. Free memory was 91.8 MB in the beginning and 82.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,008 INFO L168 Benchmark]: Boogie Preprocessor took 146.81 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 82.7 MB in the beginning and 176.9 MB in the end (delta: -94.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,009 INFO L168 Benchmark]: RCFGBuilder took 265.27 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 164.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,010 INFO L168 Benchmark]: TraceAbstraction took 4964.32 ms. Allocated memory was 199.8 MB in the beginning and 256.4 MB in the end (delta: 56.6 MB). Free memory was 164.9 MB in the beginning and 129.8 MB in the end (delta: 35.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:41,014 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.27 ms. Allocated memory is still 135.3 MB. Free memory was 91.8 MB in the beginning and 82.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.81 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 82.7 MB in the beginning and 176.9 MB in the end (delta: -94.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.27 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 164.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4964.32 ms. Allocated memory was 199.8 MB in the beginning and 256.4 MB in the end (delta: 56.6 MB). Free memory was 164.9 MB in the beginning and 129.8 MB in the end (delta: 35.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 150 SDslu, 1053 SDs, 0 SdLazy, 759 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 21 NumberOfFragments, 31 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 44856 SizeOfPredicates, 24 NumberOfNonLiveVariables, 435 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 137/228 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...