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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:15:47,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:15:47,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:15:47,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:15:47,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:15:47,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:15:47,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:15:47,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:15:47,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:15:47,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:15:47,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:15:47,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:15:47,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:15:47,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:15:47,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:15:47,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:15:47,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:15:47,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:15:47,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:15:47,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:15:47,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:15:47,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:15:47,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:15:47,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:15:47,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:15:47,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:15:47,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:15:47,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:15:47,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:15:47,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:15:47,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:15:47,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:15:47,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:15:47,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:15:47,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:15:47,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:15:47,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:15:47,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:15:47,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:15:47,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:15:47,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:15:47,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:15:47,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:15:47,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:15:47,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:15:47,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:15:47,363 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:15:47,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:15:47,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:15:47,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:15:47,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:15:47,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:15:47,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:15:47,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:15:47,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:15:47,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:15:47,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:15:47,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:15:47,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:15:47,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:15:47,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:15:47,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:15:47,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:15:47,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:15:47,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:15:47,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:15:47,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:15:47,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:15:47,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:15:47,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:15:47,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:15:47,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:15:47,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:15:47,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:15:47,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:15:47,668 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:15:47,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-10-13 19:15:47,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a4ac098/30ef20a6319c49449486a39b853d0b0a/FLAGa65859e17 [2019-10-13 19:15:48,294 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:15:48,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-10-13 19:15:48,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a4ac098/30ef20a6319c49449486a39b853d0b0a/FLAGa65859e17 [2019-10-13 19:15:48,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a4ac098/30ef20a6319c49449486a39b853d0b0a [2019-10-13 19:15:48,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:15:48,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:15:48,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:48,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:15:48,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:15:48,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:48" (1/1) ... [2019-10-13 19:15:48,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237769dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:48, skipping insertion in model container [2019-10-13 19:15:48,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:48" (1/1) ... [2019-10-13 19:15:48,660 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:15:48,703 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:15:49,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:49,081 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:15:49,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:49,167 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:15:49,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49 WrapperNode [2019-10-13 19:15:49,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:49,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:15:49,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:15:49,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:15:49,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:15:49,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:15:49,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:15:49,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:15:49,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (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 19:15:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:15:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:15:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:15:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:15:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-13 19:15:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 19:15:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:15:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:15:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:15:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:15:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:15:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:15:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:15:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:15:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:15:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:15:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:15:50,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:15:50,169 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:15:50,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:50 BoogieIcfgContainer [2019-10-13 19:15:50,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:15:50,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:15:50,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:15:50,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:15:50,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:48" (1/3) ... [2019-10-13 19:15:50,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e12c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:50, skipping insertion in model container [2019-10-13 19:15:50,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49" (2/3) ... [2019-10-13 19:15:50,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e12c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:50, skipping insertion in model container [2019-10-13 19:15:50,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:50" (3/3) ... [2019-10-13 19:15:50,182 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-10-13 19:15:50,192 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:15:50,199 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:15:50,210 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:15:50,234 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:15:50,234 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:15:50,234 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:15:50,234 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:15:50,235 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:15:50,235 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:15:50,235 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:15:50,235 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:15:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 19:15:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 19:15:50,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:50,258 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:50,261 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1960518123, now seen corresponding path program 1 times [2019-10-13 19:15:50,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:50,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076989808] [2019-10-13 19:15:50,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:50,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:50,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:50,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076989808] [2019-10-13 19:15:50,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:50,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:15:50,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971178695] [2019-10-13 19:15:50,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:15:50,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:15:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:15:50,803 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-10-13 19:15:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:50,996 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-13 19:15:50,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:15:50,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-13 19:15:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:51,010 INFO L225 Difference]: With dead ends: 38 [2019-10-13 19:15:51,010 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 19:15:51,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:15:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 19:15:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-10-13 19:15:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 19:15:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-13 19:15:51,055 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2019-10-13 19:15:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:51,056 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-13 19:15:51,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:15:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-13 19:15:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:15:51,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:51,057 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:51,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1182240945, now seen corresponding path program 1 times [2019-10-13 19:15:51,058 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:51,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660813956] [2019-10-13 19:15:51,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:51,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:51,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:51,252 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 19:15:51,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660813956] [2019-10-13 19:15:51,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859332939] [2019-10-13 19:15:51,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:51,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:15:51,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:51,473 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 19:15:51,474 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:51,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-13 19:15:51,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179229291] [2019-10-13 19:15:51,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:15:51,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:51,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:15:51,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:15:51,478 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2019-10-13 19:15:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:51,700 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-10-13 19:15:51,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:15:51,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-13 19:15:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:51,702 INFO L225 Difference]: With dead ends: 29 [2019-10-13 19:15:51,702 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 19:15:51,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:15:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 19:15:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-10-13 19:15:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 19:15:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-10-13 19:15:51,710 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2019-10-13 19:15:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:51,711 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-10-13 19:15:51,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:15:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-10-13 19:15:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:15:51,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:51,712 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:51,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:51,916 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash 491744683, now seen corresponding path program 2 times [2019-10-13 19:15:51,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:51,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819974243] [2019-10-13 19:15:51,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:51,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:51,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:52,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819974243] [2019-10-13 19:15:52,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111267530] [2019-10-13 19:15:52,188 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:52,339 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-13 19:15:52,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:15:52,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:15:52,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:52,376 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:52,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-10-13 19:15:52,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494145007] [2019-10-13 19:15:52,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:15:52,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:52,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:15:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:15:52,378 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 8 states. [2019-10-13 19:15:52,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:52,652 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-10-13 19:15:52,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:15:52,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-13 19:15:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:52,654 INFO L225 Difference]: With dead ends: 34 [2019-10-13 19:15:52,654 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 19:15:52,655 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:15:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 19:15:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2019-10-13 19:15:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 19:15:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-10-13 19:15:52,663 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2019-10-13 19:15:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:52,664 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-10-13 19:15:52,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:15:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-10-13 19:15:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 19:15:52,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:52,666 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:52,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:52,877 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 161258737, now seen corresponding path program 3 times [2019-10-13 19:15:52,878 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:52,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7124690] [2019-10-13 19:15:52,879 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:52,879 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:52,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:53,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7124690] [2019-10-13 19:15:53,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693127808] [2019-10-13 19:15:53,079 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:53,354 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 19:15:53,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:15:53,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 19:15:53,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:53,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:15:53,488 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:15:53,488 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2019-10-13 19:15:53,490 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:15:53,493 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 19:15:53,494 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 19:15:53,510 INFO L567 ElimStorePlain]: treesize reduction 5, result has 78.3 percent of original size [2019-10-13 19:15:53,511 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:15:53,511 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:18 [2019-10-13 19:15:53,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:15:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 19:15:53,603 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:53,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-10-13 19:15:53,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003512438] [2019-10-13 19:15:53,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:15:53,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:53,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:15:53,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:15:53,605 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 14 states. [2019-10-13 19:15:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:54,457 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-10-13 19:15:54,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:15:54,458 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2019-10-13 19:15:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:54,459 INFO L225 Difference]: With dead ends: 39 [2019-10-13 19:15:54,459 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:15:54,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:15:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:15:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:15:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:15:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:15:54,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-13 19:15:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:54,462 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:15:54,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:15:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:15:54,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:15:54,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:54,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:15:54,988 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-10-13 19:15:54,991 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:15:54,991 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.base| |old(#t~string0.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#t~string1.offset| |old(#t~string1.offset)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string44.base| |old(#t~string44.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string44.offset| |old(#t~string44.offset)|) (= |#t~string1.base| |old(#t~string1.base)|) (= |old(#length)| |#length|)) [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:15:54,992 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2019-10-13 19:15:54,992 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-10-13 19:15:54,992 INFO L443 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 131 235) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 131 235) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-10-13 19:15:54,993 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 131 235) the Hoare annotation is: (or (not (= 0 |old(~Id_MCDC_93~0)|)) (and (= ~Id_MCDC_93~0 0) (= |#valid| |old(#valid)|) (= |old(#length)| |#length|))) [2019-10-13 19:15:54,993 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-10-13 19:15:54,994 INFO L439 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse0 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse1 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (not (= 0 |old(~Id_MCDC_93~0)|)) (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 main_~Id_MCDC_89__Id_MCDC_96~0)) (let ((.cse2 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse3 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (not (= (* 12 .cse2) 492)) (< .cse2 42) .cse0 (not (= 492 (* 12 .cse3))) .cse1 (< .cse3 42))) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse1 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)))) [2019-10-13 19:15:55,002 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:15:55 BoogieIcfgContainer [2019-10-13 19:15:55,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:15:55,015 INFO L168 Benchmark]: Toolchain (without parser) took 6371.80 ms. Allocated memory was 141.6 MB in the beginning and 294.6 MB in the end (delta: 153.1 MB). Free memory was 100.1 MB in the beginning and 244.2 MB in the end (delta: -144.1 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,015 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.55 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 171.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,017 INFO L168 Benchmark]: Boogie Preprocessor took 75.56 ms. Allocated memory is still 200.8 MB. Free memory was 171.6 MB in the beginning and 168.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,018 INFO L168 Benchmark]: RCFGBuilder took 926.30 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 95.3 MB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,019 INFO L168 Benchmark]: TraceAbstraction took 4839.92 ms. Allocated memory was 200.8 MB in the beginning and 294.6 MB in the end (delta: 93.8 MB). Free memory was 95.3 MB in the beginning and 244.2 MB in the end (delta: -148.8 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:55,023 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 141.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.55 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 171.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.56 ms. Allocated memory is still 200.8 MB. Free memory was 171.6 MB in the beginning and 168.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 926.30 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 95.3 MB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4839.92 ms. Allocated memory was 200.8 MB in the beginning and 294.6 MB in the end (delta: 93.8 MB). Free memory was 95.3 MB in the beginning and 244.2 MB in the end (delta: -148.8 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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 [2019-10-13 19:15:55,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 19:15:55,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((!(0 == \old(Id_MCDC_93)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96)) || (((((!(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && Id_MCDC_89__Id_MCDC_95 == 0) && !(492 == 12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 40 SDtfs, 112 SDslu, 105 SDs, 0 SdLazy, 336 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 156 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 254 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 144 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 18221 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1316 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...