java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:47,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:47,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:47,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:47,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:47,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:47,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:47,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:47,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:47,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:47,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:47,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:47,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:47,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:47,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:47,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:47,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:47,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:47,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:47,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:47,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:47,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:47,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:47,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:47,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:05:47,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:05:47,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:05:47,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:05:47,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:05:47,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:05:47,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:05:47,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:05:47,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:05:47,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:05:47,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:05:47,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:05:47,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:05:47,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:05:47,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:47,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:47,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:47,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:05:47,354 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:47,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:47,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:47,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:47,356 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:47,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:47,356 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:47,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:47,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:47,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:47,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:47,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:47,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:47,358 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:47,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:47,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:47,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:47,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:47,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:47,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:47,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:47,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:47,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:47,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:47,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:47,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:47,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:47,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:47,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:05:47,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:47,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:47,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:47,662 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:47,663 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:47,663 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-10-13 21:05:47,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f632221aa/cfa8a63ce5df476d8e1bdb49a739c1ba/FLAGe484d2274 [2019-10-13 21:05:48,296 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:48,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-10-13 21:05:48,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f632221aa/cfa8a63ce5df476d8e1bdb49a739c1ba/FLAGe484d2274 [2019-10-13 21:05:48,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f632221aa/cfa8a63ce5df476d8e1bdb49a739c1ba [2019-10-13 21:05:48,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:48,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:48,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:48,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:48,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:48,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:48" (1/1) ... [2019-10-13 21:05:48,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1830d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:48, skipping insertion in model container [2019-10-13 21:05:48,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:48" (1/1) ... [2019-10-13 21:05:48,656 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:48,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:05:49,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:49,067 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:05:49,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:49,154 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:05:49,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49 WrapperNode [2019-10-13 21:05:49,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:49,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:05:49,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:05:49,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:05:49,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (1/1) ... [2019-10-13 21:05:49,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:05:49,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:05:49,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:05:49,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:05:49,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (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 [2019-10-13 21:05:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:05:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:05:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:05:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:05:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-13 21:05:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 21:05:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:05:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:05:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:05:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:05:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:05:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:05:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:05:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:05:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:05:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:05:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:05:50,038 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:05:50,039 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:05:50,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:50 BoogieIcfgContainer [2019-10-13 21:05:50,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:05:50,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:05:50,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:05:50,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:05:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:48" (1/3) ... [2019-10-13 21:05:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc9cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:50, skipping insertion in model container [2019-10-13 21:05:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:49" (2/3) ... [2019-10-13 21:05:50,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc9cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:50, skipping insertion in model container [2019-10-13 21:05:50,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:50" (3/3) ... [2019-10-13 21:05:50,051 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-10-13 21:05:50,061 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:05:50,069 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:05:50,081 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:05:50,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:05:50,116 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:05:50,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:05:50,116 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:05:50,117 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:05:50,117 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:05:50,117 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:05:50,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:05:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 21:05:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:05:50,147 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:50,148 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:50,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1960518123, now seen corresponding path program 1 times [2019-10-13 21:05:50,166 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:50,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059882456] [2019-10-13 21:05:50,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:50,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:50,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:50,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059882456] [2019-10-13 21:05:50,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:50,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:05:50,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270849801] [2019-10-13 21:05:50,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:05:50,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:05:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:05:50,667 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-10-13 21:05:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:50,756 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-13 21:05:50,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:05:50,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-13 21:05:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:50,774 INFO L225 Difference]: With dead ends: 38 [2019-10-13 21:05:50,774 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:05:50,780 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:05:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:05:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-10-13 21:05:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 21:05:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-13 21:05:50,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2019-10-13 21:05:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:50,836 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-13 21:05:50,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:05:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-13 21:05:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:05:50,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:50,837 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:50,838 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1182240945, now seen corresponding path program 1 times [2019-10-13 21:05:50,839 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:50,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135564155] [2019-10-13 21:05:50,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:50,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:50,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:51,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135564155] [2019-10-13 21:05:51,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864127658] [2019-10-13 21:05:51,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:51,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:05:51,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:51,263 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:51,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1421790703] [2019-10-13 21:05:51,315 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-10-13 21:05:51,371 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:05:51,371 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:05:51,430 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:05:51,432 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-10-13 21:05:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:51,436 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:05:51,464 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-13 21:05:51,464 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:05:51,466 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-10-13 21:05:51,466 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:05:51,467 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:05:51,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 9 [2019-10-13 21:05:51,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360685144] [2019-10-13 21:05:51,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:51,469 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:51,470 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:05:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:51,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:51,470 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 2 states. [2019-10-13 21:05:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:51,472 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-13 21:05:51,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:51,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 21:05:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:51,473 INFO L225 Difference]: With dead ends: 18 [2019-10-13 21:05:51,473 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:05:51,474 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:05:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:05:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:05:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:05:51,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-13 21:05:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:51,478 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:05:51,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:05:51,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:05:51,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:51,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:05:51,706 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:51,706 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:51,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:51,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:51,707 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2019-10-13 21:05:51,707 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:51,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 131 235) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-10-13 21:05:51,708 INFO L443 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-10-13 21:05:51,709 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 131 235) no Hoare annotation was computed. [2019-10-13 21:05:51,709 INFO L443 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-10-13 21:05:51,709 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 131 235) the Hoare annotation is: true [2019-10-13 21:05:51,709 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-10-13 21:05:51,709 INFO L446 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: true [2019-10-13 21:05:51,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:05:51 BoogieIcfgContainer [2019-10-13 21:05:51,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:05:51,720 INFO L168 Benchmark]: Toolchain (without parser) took 3081.68 ms. Allocated memory was 137.4 MB in the beginning and 232.3 MB in the end (delta: 94.9 MB). Free memory was 99.5 MB in the beginning and 113.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,721 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.70 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 173.1 MB in the end (delta: -73.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,722 INFO L168 Benchmark]: Boogie Preprocessor took 72.55 ms. Allocated memory is still 201.3 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,723 INFO L168 Benchmark]: RCFGBuilder took 812.94 ms. Allocated memory is still 201.3 MB. Free memory was 169.1 MB in the beginning and 96.3 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,724 INFO L168 Benchmark]: TraceAbstraction took 1675.33 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 96.3 MB in the beginning and 113.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:51,728 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 516.70 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 173.1 MB in the end (delta: -73.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.55 ms. Allocated memory is still 201.3 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 812.94 ms. Allocated memory is still 201.3 MB. Free memory was 169.1 MB in the beginning and 96.3 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1675.33 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 96.3 MB in the beginning and 113.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 165]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 19 SDslu, 30 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2651 SizeOfPredicates, 2 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 121, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 1.0, AVG_VARS_REMOVED_DURING_WEAKENING: 11.625, AVG_WEAKENED_CONJUNCTS: 0.0, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...