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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:30:35,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:30:35,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:30:35,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:30:35,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:30:35,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:30:35,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:30:35,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:30:35,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:30:35,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:30:35,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:30:35,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:30:35,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:30:35,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:30:35,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:30:35,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:30:35,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:30:35,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:30:35,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:30:35,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:30:35,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:30:35,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:30:35,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:30:35,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:30:35,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:30:35,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:30:35,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:30:35,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:30:35,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:30:35,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:30:35,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:30:35,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:30:35,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:30:35,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:30:35,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:30:35,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:30:35,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:30:35,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:30:35,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:30:35,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:30:35,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:30:35,564 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 21:30:35,597 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:30:35,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:30:35,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:30:35,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:30:35,600 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:30:35,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:30:35,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:30:35,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:30:35,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:30:35,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:30:35,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:30:35,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:30:35,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:30:35,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:30:35,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:30:35,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:30:35,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:30:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:30:35,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:30:35,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:30:35,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:30:35,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:30:35,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:30:35,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:30:35,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:30:35,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:30:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:30:35,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:30:35,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:30:35,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:30:35,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:30:35,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:30:35,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:30:35,947 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:30:35,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2019-10-13 21:30:36,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a21c2af/80f89d7e7f854750a3c99b6fa81225b6/FLAGbc1dab129 [2019-10-13 21:30:36,477 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:30:36,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bor5.i [2019-10-13 21:30:36,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a21c2af/80f89d7e7f854750a3c99b6fa81225b6/FLAGbc1dab129 [2019-10-13 21:30:36,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a21c2af/80f89d7e7f854750a3c99b6fa81225b6 [2019-10-13 21:30:36,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:30:36,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:30:36,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:36,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:30:36,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:30:36,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:36" (1/1) ... [2019-10-13 21:30:36,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320bbd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:36, skipping insertion in model container [2019-10-13 21:30:36,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:36" (1/1) ... [2019-10-13 21:30:36,925 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:30:36,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:30:37,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:37,186 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:30:37,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:37,371 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:30:37,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37 WrapperNode [2019-10-13 21:30:37,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:37,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:30:37,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:30:37,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:30:37,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (1/1) ... [2019-10-13 21:30:37,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:30:37,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:30:37,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:30:37,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:30:37,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (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 21:30:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:30:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:30:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2019-10-13 21:30:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:30:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:30:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:30:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2019-10-13 21:30:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:30:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:30:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:30:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:30:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:30:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:30:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:30:37,868 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:30:37,869 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:30:37,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:37 BoogieIcfgContainer [2019-10-13 21:30:37,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:30:37,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:30:37,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:30:37,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:30:37,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:36" (1/3) ... [2019-10-13 21:30:37,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2f0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:37, skipping insertion in model container [2019-10-13 21:30:37,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37" (2/3) ... [2019-10-13 21:30:37,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2f0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:37, skipping insertion in model container [2019-10-13 21:30:37,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:37" (3/3) ... [2019-10-13 21:30:37,878 INFO L109 eAbstractionObserver]: Analyzing ICFG bor5.i [2019-10-13 21:30:37,889 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:30:37,907 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:30:37,932 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:30:37,955 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:30:37,956 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:30:37,956 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:30:37,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:30:37,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:30:37,957 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:30:37,957 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:30:37,957 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:30:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:30:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 21:30:37,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:37,980 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:37,982 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1917444957, now seen corresponding path program 1 times [2019-10-13 21:30:37,994 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:37,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193750216] [2019-10-13 21:30:37,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:37,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:37,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:30:38,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193750216] [2019-10-13 21:30:38,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:30:38,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:30:38,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020432429] [2019-10-13 21:30:38,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:30:38,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:30:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:30:38,253 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2019-10-13 21:30:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:38,336 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-13 21:30:38,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:30:38,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 21:30:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:38,350 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:30:38,351 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:30:38,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:30:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:30:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:30:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:30:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 21:30:38,410 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 21:30:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:38,411 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 21:30:38,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:30:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 21:30:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:30:38,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:38,413 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:38,413 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash 826826161, now seen corresponding path program 1 times [2019-10-13 21:30:38,414 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:38,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919873204] [2019-10-13 21:30:38,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:30:38,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919873204] [2019-10-13 21:30:38,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506825489] [2019-10-13 21:30:38,568 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 21:30:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:30:38,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:30:38,758 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:30:38,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893980537] [2019-10-13 21:30:38,839 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-13 21:30:38,839 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:38,848 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:38,856 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:38,857 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:39,062 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:30:40,972 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:40,979 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-13 21:30:40,985 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:40,985 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:40,986 INFO L193 IcfgInterpreter]: Reachable states at location L43 satisfy 449#(and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~i~2 0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ (* ~N~0 4) |main_~#x~0.offset| (- 4))) main_~temp~0) (<= 0 main_~i~2) (not (< (+ main_~i~2 1) ~N~0)) (= main_~i~2 0)) [2019-10-13 21:30:40,986 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-13 21:30:40,986 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 537#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:40,987 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 96#(and (or (and (not (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) (- 4294967296))) (not (< main_~i~1 ~N~0))) (and (not (< main_~i~1 ~N~0)) (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647) (= |main_#t~ret6| (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296)))) (<= ~N~0 1)) [2019-10-13 21:30:40,987 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 523#true [2019-10-13 21:30:40,987 INFO L193 IcfgInterpreter]: Reachable states at location L45 satisfy 367#(and (or (and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (not (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ (* ~N~0 4) |main_~#x~0.offset| (- 4))) main_~temp~0) (= main_~ret5~0 (+ (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) (- 4294967296))) (not (< (+ main_~i~2 1) ~N~0)) (= main_~i~2 0)) (and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ (* ~N~0 4) |main_~#x~0.offset| (- 4))) main_~temp~0) (= main_~ret5~0 (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296)) (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647) (not (< (+ main_~i~2 1) ~N~0)) (= main_~i~2 0))) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret5~0 2147483647) (<= main_~i~2 0) (<= 0 (+ main_~ret5~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (<= 0 main_~i~2)) [2019-10-13 21:30:40,988 INFO L193 IcfgInterpreter]: Reachable states at location L46 satisfy 275#(and (<= 0 (+ main_~ret2~0 2147483648)) (<= ~N~0 1) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret5~0 2147483647) (<= main_~i~2 0) (<= 0 (+ main_~ret5~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (<= 0 main_~i~2) (= main_~i~2 0)) [2019-10-13 21:30:40,988 INFO L193 IcfgInterpreter]: Reachable states at location L29-4 satisfy 78#(not (< main_~i~1 ~N~0)) [2019-10-13 21:30:40,988 INFO L193 IcfgInterpreter]: Reachable states at location L37-1 satisfy 509#(and (<= ~N~0 1) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647)) [2019-10-13 21:30:40,989 INFO L193 IcfgInterpreter]: Reachable states at location L39-3 satisfy 492#(and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~i~2 0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (<= 0 main_~i~2) (= main_~i~2 0)) [2019-10-13 21:30:40,989 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 73#true [2019-10-13 21:30:40,990 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 214#(and (<= 0 (+ main_~ret2~0 2147483648)) (<= ~N~0 1) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret5~0 2147483647) (<= main_~i~2 0) (<= 0 (+ main_~ret5~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (<= 0 main_~i~2) (= main_~i~2 0)) [2019-10-13 21:30:40,994 INFO L193 IcfgInterpreter]: Reachable states at location L37 satisfy 514#(and (or (and (not (< main_~i~1 ~N~0)) (= (mod main_~temp~0 4294967296) main_~ret~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod main_~temp~0 4294967296) 2147483647)) (and (not (< main_~i~1 ~N~0)) (= (mod main_~temp~0 4294967296) (+ main_~ret~0 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (< 2147483647 (mod main_~temp~0 4294967296)))) (<= ~N~0 1) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647)) [2019-10-13 21:30:40,995 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:40,996 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-13 21:30:40,996 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 542#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:40,996 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:40,996 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 533#(and (<= ~N~0 1) (= bor_~res~0 (select (select |#memory_int| bor_~x.base) bor_~x.offset)) (= bor_~x.offset |bor_#in~x.offset|) (not (< bor_~i~0 ~N~0)) (= |bor_#in~x.base| bor_~x.base) (<= 1 bor_~i~0) (<= bor_~i~0 1) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|) (= 1 bor_~i~0)) [2019-10-13 21:30:40,997 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 528#(and (= bor_~res~0 (select (select |#memory_int| bor_~x.base) bor_~x.offset)) (= bor_~x.offset |bor_#in~x.offset|) (= |bor_#in~x.base| bor_~x.base) (<= 1 bor_~i~0) (<= bor_~i~0 1) (= 1 bor_~i~0)) [2019-10-13 21:30:40,997 INFO L193 IcfgInterpreter]: Reachable states at location L43-1 satisfy 414#(and (<= main_~i~2 0) (or (and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (<= 0 (+ main_~ret~0 2147483648)) (= |main_#t~ret13| (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ (* ~N~0 4) |main_~#x~0.offset| (- 4))) main_~temp~0) (not (< (+ main_~i~2 1) ~N~0)) (= main_~i~2 0)) (and (<= ~N~0 1) (<= 0 (+ main_~ret2~0 2147483648)) (not (<= (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) 2147483647)) (<= 0 (+ main_~ret~0 2147483648)) (= |main_#t~ret13| (+ (mod (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|) 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ (* ~N~0 4) |main_~#x~0.offset| (- 4))) main_~temp~0) (not (< (+ main_~i~2 1) ~N~0)) (= main_~i~2 0))) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (<= 0 main_~i~2)) [2019-10-13 21:30:41,921 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-10-13 21:30:42,102 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-10-13 21:30:42,106 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:42,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4, 17] total 25 [2019-10-13 21:30:42,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351524069] [2019-10-13 21:30:42,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-13 21:30:42,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-13 21:30:42,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:30:42,119 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 25 states. [2019-10-13 21:30:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:42,390 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2019-10-13 21:30:42,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:30:42,391 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 26 [2019-10-13 21:30:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:42,392 INFO L225 Difference]: With dead ends: 36 [2019-10-13 21:30:42,392 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 21:30:42,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2019-10-13 21:30:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 21:30:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 21:30:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:30:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-13 21:30:42,399 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2019-10-13 21:30:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:42,400 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-13 21:30:42,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-13 21:30:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-13 21:30:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:30:42,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:42,401 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:42,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:42,606 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash 304486889, now seen corresponding path program 1 times [2019-10-13 21:30:42,607 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:42,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767927193] [2019-10-13 21:30:42,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:42,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:42,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:30:42,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767927193] [2019-10-13 21:30:42,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:30:42,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:30:42,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001458506] [2019-10-13 21:30:42,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:30:42,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:42,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:30:42,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:30:42,746 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2019-10-13 21:30:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:42,782 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-13 21:30:42,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:30:42,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-13 21:30:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:42,784 INFO L225 Difference]: With dead ends: 33 [2019-10-13 21:30:42,784 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:30:42,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:30:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:30:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 21:30:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:30:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-13 21:30:42,790 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2019-10-13 21:30:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:42,792 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-13 21:30:42,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:30:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-13 21:30:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 21:30:42,793 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:42,794 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:42,794 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash 114650706, now seen corresponding path program 1 times [2019-10-13 21:30:42,794 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:42,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148365390] [2019-10-13 21:30:42,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:42,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:42,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 21:30:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 21:30:43,005 INFO L168 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-13 21:30:43,005 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-13 21:30:43,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:30:43 BoogieIcfgContainer [2019-10-13 21:30:43,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:30:43,092 INFO L168 Benchmark]: Toolchain (without parser) took 6183.05 ms. Allocated memory was 146.3 MB in the beginning and 271.1 MB in the end (delta: 124.8 MB). Free memory was 104.0 MB in the beginning and 159.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,093 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.39 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.8 MB in the beginning and 183.5 MB in the end (delta: -79.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,096 INFO L168 Benchmark]: Boogie Preprocessor took 52.63 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 181.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,099 INFO L168 Benchmark]: RCFGBuilder took 444.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 159.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,100 INFO L168 Benchmark]: TraceAbstraction took 5217.51 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 159.9 MB in the beginning and 159.1 MB in the end (delta: 841.9 kB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:30:43,109 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 462.39 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.8 MB in the beginning and 183.5 MB in the end (delta: -79.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.63 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 181.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 159.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5217.51 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 159.9 MB in the beginning and 159.1 MB in the end (delta: 841.9 kB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 14. Possible FailurePath: [L6] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; VAL [\old(N)=0, i=0, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=1, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}] [L29] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}] [L34] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) [L16] return res; [L34] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=0, i=2, N=2, x={1:0}] [L34] ret = bor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp VAL [\old(N)=0, i=2, N=2, ret=0, temp=0, x={1:0}] [L37] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=1, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) [L16] return res; [L37] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=-2, i=2, N=2, ret=0, temp=0, x={1:0}] [L37] ret2 = bor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [\old(N)=0, i=2, i=0, N=2, ret=0, ret2=-2, temp=1, x={1:0}] [L39] COND TRUE i