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/bor2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:30:35,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:30:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:30:35,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:30:35,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:30:35,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:30:35,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:30:35,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:30:35,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:30:35,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:30:35,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:30:35,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:30:35,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:30:35,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:30:35,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:30:35,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:30:35,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:30:35,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:30:35,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:30:35,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:30:35,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:30:35,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:30:35,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:30:35,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:30:35,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:30:35,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:30:35,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:30:35,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:30:35,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:30:35,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:30:35,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:30:35,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:30:35,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:30:35,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:30:35,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:30:35,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:30:35,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:30:35,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:30:35,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:30:35,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:30:35,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:30:35,626 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 21:30:35,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:30:35,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:30:35,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:30:35,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:30:35,650 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:30:35,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:30:35,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:30:35,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:30:35,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:30:35,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:30:35,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:30:35,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:30:35,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:30:35,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:30:35,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:30:35,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:30:35,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:30:35,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:30:35,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:30:35,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:30:35,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:30:35,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:30:35,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:30:35,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:30:35,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:30:35,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:30:35,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:30:35,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:30:35,656 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 21:30:35,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:30:35,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:30:35,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:30:35,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:30:35,959 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:30:35,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor2.i [2019-10-13 21:30:36,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18a2215d7/57431564e4bc4be993596fbc55df9342/FLAGeb5c60642 [2019-10-13 21:30:36,460 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:30:36,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bor2.i [2019-10-13 21:30:36,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18a2215d7/57431564e4bc4be993596fbc55df9342/FLAGeb5c60642 [2019-10-13 21:30:36,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18a2215d7/57431564e4bc4be993596fbc55df9342 [2019-10-13 21:30:36,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:30:36,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:30:36,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:36,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:30:36,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:30:36,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:36" (1/1) ... [2019-10-13 21:30:36,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0511c1 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 21:30:36,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:36" (1/1) ... [2019-10-13 21:30:36,885 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:30:36,908 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:30:37,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:37,106 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:30:37,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:37,238 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:30:37,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:37 WrapperNode [2019-10-13 21:30:37,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:37,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:30:37,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:30:37,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:30:37,251 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 21:30:37,251 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 21:30:37,260 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 21:30:37,260 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 21:30:37,270 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 21:30:37,276 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 21:30:37,277 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 21:30:37,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:30:37,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:30:37,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:30:37,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:30:37,283 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 21:30:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:30:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:30:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2019-10-13 21:30:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:30:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:30:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:30:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2019-10-13 21:30:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:30:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:30:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:30:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:30:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:30:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:30:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:30:37,751 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:30:37,751 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:30:37,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:37 BoogieIcfgContainer [2019-10-13 21:30:37,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:30:37,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:30:37,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:30:37,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:30:37,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:36" (1/3) ... [2019-10-13 21:30:37,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0dcc 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 21:30:37,759 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 21:30:37,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0dcc 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 21:30:37,759 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 21:30:37,761 INFO L109 eAbstractionObserver]: Analyzing ICFG bor2.i [2019-10-13 21:30:37,772 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:30:37,781 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:30:37,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:30:37,811 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:30:37,811 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:30:37,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:30:37,812 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:30:37,812 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:30:37,812 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:30:37,812 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:30:37,812 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:30:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 21:30:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:30:37,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:37,834 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] [2019-10-13 21:30:37,836 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:37,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2002379581, now seen corresponding path program 1 times [2019-10-13 21:30:37,848 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:37,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723308983] [2019-10-13 21:30:37,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:37,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:37,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,101 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 21:30:38,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723308983] [2019-10-13 21:30:38,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:30:38,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:30:38,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067930303] [2019-10-13 21:30:38,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:30:38,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:30:38,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:30:38,142 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 21:30:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:38,190 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 21:30:38,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:30:38,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 21:30:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:38,205 INFO L225 Difference]: With dead ends: 41 [2019-10-13 21:30:38,205 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:30:38,212 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 21:30:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:30:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:30:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:30:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 21:30:38,275 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 21:30:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:38,276 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 21:30:38,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:30:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 21:30:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 21:30:38,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:38,282 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 21:30:38,282 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1232729663, now seen corresponding path program 1 times [2019-10-13 21:30:38,283 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:38,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290150435] [2019-10-13 21:30:38,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,399 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 21:30:38,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290150435] [2019-10-13 21:30:38,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560737813] [2019-10-13 21:30:38,400 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 21:30:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:30:38,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:30:38,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:38,568 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 21:30:38,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:30:38,569 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 21:30:38,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785891877] [2019-10-13 21:30:38,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:30:38,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:30:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:30:38,572 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 21:30:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:38,583 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 21:30:38,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:30:38,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 21:30:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:38,585 INFO L225 Difference]: With dead ends: 33 [2019-10-13 21:30:38,585 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:30:38,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:30:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:30:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:30:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:30:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 21:30:38,592 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 21:30:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:38,593 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 21:30:38,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:30:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 21:30:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 21:30:38,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:38,596 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:38,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:38,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:38,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash 638962104, now seen corresponding path program 1 times [2019-10-13 21:30:38,799 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:38,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863044861] [2019-10-13 21:30:38,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:30:38,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863044861] [2019-10-13 21:30:38,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:30:38,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:30:38,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051358131] [2019-10-13 21:30:38,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:30:38,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:30:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:30:38,884 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 21:30:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:38,903 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 21:30:38,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:30:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 21:30:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:38,904 INFO L225 Difference]: With dead ends: 31 [2019-10-13 21:30:38,904 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 21:30:38,905 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 21:30:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 21:30:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 21:30:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 21:30:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 21:30:38,911 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 21:30:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:38,913 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 21:30:38,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:30:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 21:30:38,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 21:30:38,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:38,915 INFO L380 BasicCegarLoop]: trace histogram [3, 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 21:30:38,915 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:38,916 INFO L82 PathProgramCache]: Analyzing trace with hash -454929733, now seen corresponding path program 1 times [2019-10-13 21:30:38,916 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:38,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541411209] [2019-10-13 21:30:38,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:38,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:30:38,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541411209] [2019-10-13 21:30:38,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168157118] [2019-10-13 21:30:38,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:30:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:39,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:30:39,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:30:39,121 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:30:39,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900147222] [2019-10-13 21:30:39,205 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:30:39,205 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:39,214 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:39,226 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:39,227 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:39,439 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:30:41,493 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:41,551 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:30:41,556 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:41,557 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:41,557 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:30:41,557 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_prenex_2 Int) (v_bor_~res~0_BEFORE_RETURN_1 Int) (v_bor_~res~0_BEFORE_RETURN_2 Int) (v_prenex_1 Int)) (or (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) main_~ret~0)) (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (+ (mod v_prenex_1 4294967296) (- 4294967296))) (<= main_~ret~0 2147483647) (not (<= (mod v_prenex_1 4294967296) 2147483647))) (and (= (mod v_bor_~res~0_BEFORE_RETURN_2 4294967296) main_~ret~0) (<= (mod v_bor_~res~0_BEFORE_RETURN_2 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647)) (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (mod v_bor_~res~0_BEFORE_RETURN_1 4294967296)) (<= main_~ret~0 2147483647) (<= (mod v_bor_~res~0_BEFORE_RETURN_1 4294967296) 2147483647)))) [2019-10-13 21:30:41,557 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:41,558 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:30:41,558 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:30:41,558 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:30:41,558 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:41,558 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:41,559 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:41,559 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:30:41,559 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:41,559 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:30:41,560 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (not (= main_~ret~0 main_~ret2~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_5 Int) (v_bor_~res~0_BEFORE_RETURN_6 Int) (v_prenex_29 Int) (v_prenex_30 Int)) (or (and (<= (mod v_prenex_29 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= (mod v_prenex_29 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0))))) (and (exists ((v_bor_~res~0_BEFORE_RETURN_5 Int) (v_bor_~res~0_BEFORE_RETURN_6 Int) (v_prenex_29 Int) (v_prenex_30 Int)) (or (and (<= (mod v_prenex_29 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= (mod v_prenex_29 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_6 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)))) (not (= main_~ret~0 main_~ret5~0)))) [2019-10-13 21:30:41,560 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:30:41,560 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_bor_~res~0_BEFORE_RETURN_1 Int) (v_prenex_1 Int)) (or (and (not (< main_~i~1 1000)) (= |main_#t~ret5| (mod v_bor_~res~0_BEFORE_RETURN_1 4294967296)) (<= (mod v_bor_~res~0_BEFORE_RETURN_1 4294967296) 2147483647)) (and (= (+ (mod v_prenex_1 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000)) (not (<= (mod v_prenex_1 4294967296) 2147483647))))) (exists ((v_prenex_2 Int) (v_bor_~res~0_BEFORE_RETURN_2 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_2 4294967296) 2147483647) (not (< main_~i~1 1000)) (= (mod v_bor_~res~0_BEFORE_RETURN_2 4294967296) |main_#t~ret5|)) (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000)))))) [2019-10-13 21:30:41,561 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:30:41,561 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:30:41,561 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:30:41,561 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:30:41,933 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:41,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 21:30:41,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055534481] [2019-10-13 21:30:41,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:30:41,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:30:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:30:41,937 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 21:30:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:44,623 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 21:30:44,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:30:44,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 21:30:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:44,625 INFO L225 Difference]: With dead ends: 40 [2019-10-13 21:30:44,625 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 21:30:44,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:30:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 21:30:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 21:30:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:30:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 21:30:44,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 21:30:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:44,633 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 21:30:44,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:30:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 21:30:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:30:44,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:44,635 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:44,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:44,849 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 545849657, now seen corresponding path program 2 times [2019-10-13 21:30:44,850 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:44,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542526801] [2019-10-13 21:30:44,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:44,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:44,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:30:44,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542526801] [2019-10-13 21:30:44,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122810801] [2019-10-13 21:30:44,933 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 21:30:45,006 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:30:45,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:30:45,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:30:45,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:30:45,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:30:45,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [705770840] [2019-10-13 21:30:45,086 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:30:45,087 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:45,087 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:45,087 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:45,088 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:45,122 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:30:46,629 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:46,681 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:30:46,687 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:46,688 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:46,688 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:30:46,688 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_prenex_196 Int) (v_prenex_195 Int) (v_bor_~res~0_BEFORE_RETURN_27 Int) (v_bor_~res~0_BEFORE_RETURN_28 Int)) (or (and (<= (mod v_prenex_196 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_prenex_196 4294967296) main_~ret~0) (<= main_~ret~0 2147483647)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_27 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (mod v_bor_~res~0_BEFORE_RETURN_27 4294967296)) (<= main_~ret~0 2147483647)) (and (not (<= (mod v_prenex_195 4294967296) 2147483647)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (+ (mod v_prenex_195 4294967296) (- 4294967296))) (<= main_~ret~0 2147483647)) (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_28 4294967296) (- 4294967296)) main_~ret~0) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_28 4294967296) 2147483647)) (<= main_~ret~0 2147483647)))) [2019-10-13 21:30:46,688 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:46,688 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:30:46,689 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:30:46,689 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:30:46,689 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:46,689 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:46,689 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:46,690 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:30:46,690 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:46,690 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:30:46,690 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (exists ((v_prenex_224 Int) (v_bor_~res~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int) (v_bor_~res~0_BEFORE_RETURN_31 Int)) (or (and (not (<= (mod v_prenex_223 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_32 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_32 4294967296))) (and (not (<= (mod v_prenex_224 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_prenex_224 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_31 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_31 4294967296)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)))) (not (= main_~ret~0 main_~ret5~0))) (and (not (= main_~ret~0 main_~ret2~0)) (exists ((v_prenex_224 Int) (v_bor_~res~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int) (v_bor_~res~0_BEFORE_RETURN_31 Int)) (or (and (not (<= (mod v_prenex_223 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_32 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_32 4294967296))) (and (not (<= (mod v_prenex_224 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_prenex_224 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_31 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_31 4294967296)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)))))) [2019-10-13 21:30:46,691 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:30:46,691 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_prenex_195 Int) (v_bor_~res~0_BEFORE_RETURN_27 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_27 4294967296) 2147483647) (not (< main_~i~1 1000)) (= (mod v_bor_~res~0_BEFORE_RETURN_27 4294967296) |main_#t~ret5|)) (and (= (+ (mod v_prenex_195 4294967296) (- 4294967296)) |main_#t~ret5|) (not (<= (mod v_prenex_195 4294967296) 2147483647)) (not (< main_~i~1 1000))))) (exists ((v_prenex_196 Int) (v_bor_~res~0_BEFORE_RETURN_28 Int)) (or (and (not (< main_~i~1 1000)) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_28 4294967296) 2147483647)) (= (+ (mod v_bor_~res~0_BEFORE_RETURN_28 4294967296) (- 4294967296)) |main_#t~ret5|)) (and (<= (mod v_prenex_196 4294967296) 2147483647) (not (< main_~i~1 1000)) (= |main_#t~ret5| (mod v_prenex_196 4294967296)))))) [2019-10-13 21:30:46,691 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:30:46,691 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:30:46,691 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:30:46,692 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:30:47,130 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:47,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 21:30:47,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856461093] [2019-10-13 21:30:47,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 21:30:47,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 21:30:47,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:30:47,133 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2019-10-13 21:30:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:48,786 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-10-13 21:30:48,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:30:48,787 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2019-10-13 21:30:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:48,787 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:30:48,787 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:30:48,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:30:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:30:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 21:30:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 21:30:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 21:30:48,795 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-10-13 21:30:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:48,796 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 21:30:48,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 21:30:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 21:30:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 21:30:48,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:48,797 INFO L380 BasicCegarLoop]: trace histogram [12, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:49,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:49,002 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:49,003 INFO L82 PathProgramCache]: Analyzing trace with hash -633329328, now seen corresponding path program 3 times [2019-10-13 21:30:49,003 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:49,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851853548] [2019-10-13 21:30:49,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:49,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:49,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:49,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851853548] [2019-10-13 21:30:49,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724547394] [2019-10-13 21:30:49,101 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:49,205 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:30:49,205 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:30:49,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:30:49,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:49,220 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:49,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [539311230] [2019-10-13 21:30:49,326 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:30:49,326 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:49,327 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:49,328 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:49,328 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:49,348 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:30:50,844 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:50,881 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:30:50,886 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:50,886 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:50,886 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:30:50,887 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_prenex_389 Int) (v_bor_~res~0_BEFORE_RETURN_54 Int) (v_bor_~res~0_BEFORE_RETURN_53 Int) (v_prenex_390 Int)) (or (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~0) (<= main_~ret~0 2147483647)) (and (not (<= (mod v_prenex_389 4294967296) 2147483647)) (= main_~ret~0 (+ (mod v_prenex_389 4294967296) (- 4294967296))) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) 2147483647) (= (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) main_~ret~0) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647)) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (= (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) main_~ret~0)))) [2019-10-13 21:30:50,887 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:50,887 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:30:50,887 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:30:50,888 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:30:50,888 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:50,888 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:50,889 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:50,889 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:30:50,889 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:50,890 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:30:50,890 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (exists ((v_bor_~res~0_BEFORE_RETURN_58 Int) (v_bor_~res~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_57 4294967296)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (< main_~i~2 999)) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (+ (mod v_bor_~res~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0)) (and (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (not (<= (mod v_prenex_417 4294967296) 2147483647))) (and (= main_~ret5~0 (mod v_prenex_418 4294967296)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (<= (mod v_prenex_418 4294967296) 2147483647)))) (not (= main_~ret~0 main_~ret2~0))) (and (exists ((v_bor_~res~0_BEFORE_RETURN_58 Int) (v_bor_~res~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_bor_~res~0_BEFORE_RETURN_57 4294967296)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (< main_~i~2 999)) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (+ (mod v_bor_~res~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0)) (and (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (not (<= (mod v_prenex_417 4294967296) 2147483647))) (and (= main_~ret5~0 (mod v_prenex_418 4294967296)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (<= (mod v_prenex_418 4294967296) 2147483647)))) (not (= main_~ret~0 main_~ret5~0)))) [2019-10-13 21:30:50,890 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:30:50,891 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_bor_~res~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) 2147483647) (= (mod v_bor_~res~0_BEFORE_RETURN_54 4294967296) |main_#t~ret5|) (not (< main_~i~1 1000))) (and (not (< main_~i~1 1000)) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) |main_#t~ret5|) (not (<= (mod v_prenex_390 4294967296) 2147483647))))) (exists ((v_prenex_389 Int) (v_bor_~res~0_BEFORE_RETURN_53 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) 2147483647) (not (< main_~i~1 1000)) (= (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) |main_#t~ret5|)) (and (not (<= (mod v_prenex_389 4294967296) 2147483647)) (not (< main_~i~1 1000)) (= (+ (mod v_prenex_389 4294967296) (- 4294967296)) |main_#t~ret5|))))) [2019-10-13 21:30:50,891 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:30:50,891 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:30:50,892 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:30:50,892 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:30:51,434 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:51,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 25 [2019-10-13 21:30:51,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682970523] [2019-10-13 21:30:51,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:30:51,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:51,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:30:51,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:30:51,443 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 26 states. [2019-10-13 21:30:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:52,396 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-13 21:30:52,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 21:30:52,396 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2019-10-13 21:30:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:52,399 INFO L225 Difference]: With dead ends: 54 [2019-10-13 21:30:52,399 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 21:30:52,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:30:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 21:30:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 21:30:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 21:30:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 21:30:52,409 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2019-10-13 21:30:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:52,409 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 21:30:52,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:30:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 21:30:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 21:30:52,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:52,411 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:52,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:52,615 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:52,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1897195758, now seen corresponding path program 4 times [2019-10-13 21:30:52,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:52,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290480157] [2019-10-13 21:30:52,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:52,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:52,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:52,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290480157] [2019-10-13 21:30:52,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394429042] [2019-10-13 21:30:52,793 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:52,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 21:30:52,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:52,938 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:53,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [472789853] [2019-10-13 21:30:53,257 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:30:53,260 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:53,260 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:53,261 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:53,261 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:53,281 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:30:54,546 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:54,573 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:30:54,576 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:54,576 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:54,577 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:30:54,577 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_prenex_583 Int) (v_prenex_584 Int) (v_bor_~res~0_BEFORE_RETURN_79 Int) (v_bor_~res~0_BEFORE_RETURN_80 Int)) (or (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_80 4294967296) 2147483647)) (<= main_~ret~0 2147483647) (= main_~ret~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_80 4294967296) (- 4294967296)))) (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~0) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (<= main_~ret~0 2147483647)) (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (= (mod v_prenex_584 4294967296) main_~ret~0) (<= (mod v_prenex_584 4294967296) 2147483647)) (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_bor_~res~0_BEFORE_RETURN_79 4294967296) 2147483647) (<= main_~ret~0 2147483647) (= main_~ret~0 (mod v_bor_~res~0_BEFORE_RETURN_79 4294967296))))) [2019-10-13 21:30:54,577 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:54,577 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:30:54,577 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:30:54,578 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:30:54,578 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:54,578 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:54,578 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:54,578 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:30:54,579 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:54,579 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:30:54,579 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (not (= main_~ret~0 main_~ret2~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_83 Int) (v_prenex_611 Int) (v_bor_~res~0_BEFORE_RETURN_84 Int) (v_prenex_612 Int)) (or (and (not (<= (mod v_bor_~res~0_BEFORE_RETURN_83 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_83 4294967296) (- 4294967296)))) (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) 2147483647))) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_612 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (mod v_prenex_612 4294967296) main_~ret5~0))))) (and (not (= main_~ret~0 main_~ret5~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_83 Int) (v_prenex_611 Int) (v_bor_~res~0_BEFORE_RETURN_84 Int) (v_prenex_612 Int)) (or (and (not (<= (mod v_bor_~res~0_BEFORE_RETURN_83 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_83 4294967296) (- 4294967296)))) (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_84 4294967296) 2147483647))) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_612 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (mod v_prenex_612 4294967296) main_~ret5~0)))))) [2019-10-13 21:30:54,579 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:30:54,580 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_prenex_584 Int) (v_bor_~res~0_BEFORE_RETURN_80 Int)) (or (and (= |main_#t~ret5| (mod v_prenex_584 4294967296)) (not (< main_~i~1 1000)) (<= (mod v_prenex_584 4294967296) 2147483647)) (and (not (< main_~i~1 1000)) (= |main_#t~ret5| (+ (mod v_bor_~res~0_BEFORE_RETURN_80 4294967296) (- 4294967296))) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_80 4294967296) 2147483647))))) (exists ((v_prenex_583 Int) (v_bor_~res~0_BEFORE_RETURN_79 Int)) (or (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000)) (not (<= (mod v_prenex_583 4294967296) 2147483647))) (and (= |main_#t~ret5| (mod v_bor_~res~0_BEFORE_RETURN_79 4294967296)) (not (< main_~i~1 1000)) (<= (mod v_bor_~res~0_BEFORE_RETURN_79 4294967296) 2147483647))))) [2019-10-13 21:30:54,580 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:30:54,580 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:30:54,580 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:30:54,580 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:30:54,992 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:54,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 11] total 39 [2019-10-13 21:30:54,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213895443] [2019-10-13 21:30:54,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-13 21:30:54,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:54,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-13 21:30:54,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:30:54,996 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 40 states. [2019-10-13 21:30:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:56,546 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2019-10-13 21:30:56,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-13 21:30:56,546 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 49 [2019-10-13 21:30:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:56,547 INFO L225 Difference]: With dead ends: 68 [2019-10-13 21:30:56,547 INFO L226 Difference]: Without dead ends: 50 [2019-10-13 21:30:56,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1244, Invalid=4158, Unknown=0, NotChecked=0, Total=5402 [2019-10-13 21:30:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-13 21:30:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-10-13 21:30:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-13 21:30:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-13 21:30:56,559 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 49 [2019-10-13 21:30:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:56,560 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-13 21:30:56,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-13 21:30:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-13 21:30:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 21:30:56,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:56,562 INFO L380 BasicCegarLoop]: trace histogram [26, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:56,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:56,770 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:56,770 INFO L82 PathProgramCache]: Analyzing trace with hash -755090094, now seen corresponding path program 5 times [2019-10-13 21:30:56,770 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:56,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488637403] [2019-10-13 21:30:56,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:56,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:56,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 21:30:57,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488637403] [2019-10-13 21:30:57,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908733526] [2019-10-13 21:30:57,187 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:57,352 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:30:57,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:30:57,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:30:57,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-10-13 21:30:57,436 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2019-10-13 21:30:57,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [9088001] [2019-10-13 21:30:57,490 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:30:57,491 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:57,492 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:57,492 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:57,493 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:57,526 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:30:58,926 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:30:58,948 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:30:58,950 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:30:58,951 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:30:58,951 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:30:58,951 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_bor_~res~0_BEFORE_RETURN_105 Int) (v_prenex_777 Int) (v_prenex_778 Int) (v_bor_~res~0_BEFORE_RETURN_106 Int)) (or (and (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (= main_~ret~0 (mod v_prenex_778 4294967296)) (<= (mod v_prenex_778 4294967296) 2147483647)) (and (= main_~ret~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_106 4294967296) 2147483647)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647)) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (= main_~ret~0 (+ (mod v_prenex_777 4294967296) (- 4294967296)))) (and (<= (mod v_bor_~res~0_BEFORE_RETURN_105 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (mod v_bor_~res~0_BEFORE_RETURN_105 4294967296)) (<= main_~ret~0 2147483647)))) [2019-10-13 21:30:58,951 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:30:58,951 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:30:58,952 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:30:58,953 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:30:58,953 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:30:58,953 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (not (= main_~ret~0 main_~ret2~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_prenex_805 Int) (v_bor_~res~0_BEFORE_RETURN_109 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (<= (mod v_prenex_806 4294967296) 2147483647)) (and (= (+ (mod v_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= (mod v_bor_~res~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_bor_~res~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_110 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0))))) (and (not (= main_~ret~0 main_~ret5~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_prenex_805 Int) (v_bor_~res~0_BEFORE_RETURN_109 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (<= (mod v_prenex_806 4294967296) 2147483647)) (and (= (+ (mod v_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= (mod v_bor_~res~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_bor_~res~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_110 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)))))) [2019-10-13 21:30:58,953 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:30:58,954 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_bor_~res~0_BEFORE_RETURN_105 Int) (v_prenex_777 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_105 4294967296) 2147483647) (not (< main_~i~1 1000)) (= (mod v_bor_~res~0_BEFORE_RETURN_105 4294967296) |main_#t~ret5|)) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (= (+ (mod v_prenex_777 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000))))) (exists ((v_prenex_778 Int) (v_bor_~res~0_BEFORE_RETURN_106 Int)) (or (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_106 4294967296) (- 4294967296)) |main_#t~ret5|) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_106 4294967296) 2147483647)) (not (< main_~i~1 1000))) (and (not (< main_~i~1 1000)) (= (mod v_prenex_778 4294967296) |main_#t~ret5|) (<= (mod v_prenex_778 4294967296) 2147483647))))) [2019-10-13 21:30:58,956 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:30:58,957 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:30:58,957 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:30:58,957 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:30:59,534 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:30:59,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 4, 4, 11] total 43 [2019-10-13 21:30:59,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767158151] [2019-10-13 21:30:59,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-13 21:30:59,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-13 21:30:59,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 21:30:59,538 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 44 states. [2019-10-13 21:31:01,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:31:01,968 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-10-13 21:31:01,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:31:01,968 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 63 [2019-10-13 21:31:01,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:31:01,969 INFO L225 Difference]: With dead ends: 72 [2019-10-13 21:31:01,969 INFO L226 Difference]: Without dead ends: 54 [2019-10-13 21:31:01,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1349, Invalid=5457, Unknown=0, NotChecked=0, Total=6806 [2019-10-13 21:31:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-13 21:31:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-10-13 21:31:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 21:31:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-10-13 21:31:01,980 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 63 [2019-10-13 21:31:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:31:01,980 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-10-13 21:31:01,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-13 21:31:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-10-13 21:31:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 21:31:01,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:31:01,982 INFO L380 BasicCegarLoop]: trace histogram [27, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:31:02,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:31:02,187 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:31:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:31:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1616126463, now seen corresponding path program 6 times [2019-10-13 21:31:02,188 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:31:02,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181544742] [2019-10-13 21:31:02,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:31:02,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:31:02,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:31:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:31:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 21:31:02,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181544742] [2019-10-13 21:31:02,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139559056] [2019-10-13 21:31:02,633 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:31:02,840 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:31:02,840 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:31:02,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 21:31:02,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:31:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 21:31:02,907 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:31:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 21:31:03,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713489419] [2019-10-13 21:31:03,853 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:31:03,853 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:31:03,853 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:31:03,853 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:31:03,853 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:31:03,871 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:31:05,115 INFO L199 IcfgInterpreter]: Interpreting procedure bor with input of size 1 for LOIs [2019-10-13 21:31:05,143 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:31:05,145 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:31:05,145 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:31:05,145 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 1000 main_~i~1) (not (< main_~i~1 1000))) [2019-10-13 21:31:05,146 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 592#(exists ((v_prenex_972 Int) (v_prenex_971 Int) (v_bor_~res~0_BEFORE_RETURN_132 Int) (v_bor_~res~0_BEFORE_RETURN_131 Int)) (or (and (= main_~ret~0 (mod v_prenex_972 4294967296)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647) (<= (mod v_prenex_972 4294967296) 2147483647)) (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) main_~ret~0) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_132 4294967296) 2147483647)) (<= main_~ret~0 2147483647)) (and (= (mod v_bor_~res~0_BEFORE_RETURN_131 4294967296) main_~ret~0) (<= (mod v_bor_~res~0_BEFORE_RETURN_131 4294967296) 2147483647) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= main_~ret~0 2147483647)) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (not (< main_~i~1 1000)) (<= 0 (+ main_~ret~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~0 (+ (mod v_prenex_971 4294967296) (- 4294967296))) (<= main_~ret~0 2147483647)))) [2019-10-13 21:31:05,146 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 648#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:31:05,146 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 21:31:05,146 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 639#(<= 1 bor_~i~0) [2019-10-13 21:31:05,146 INFO L193 IcfgInterpreter]: Reachable states at location borENTRY satisfy 601#true [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 653#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 479#true [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:31:05,147 INFO L193 IcfgInterpreter]: Reachable states at location borEXIT satisfy 644#(and (<= 1000 bor_~i~0) (<= 1 bor_~i~0) (not (< bor_~i~0 1000)) (= (ite (<= (mod bor_~res~0 4294967296) 2147483647) (mod bor_~res~0 4294967296) (+ (mod bor_~res~0 4294967296) (- 4294967296))) |bor_#res|)) [2019-10-13 21:31:05,148 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(or (and (exists ((v_bor_~res~0_BEFORE_RETURN_136 Int) (v_bor_~res~0_BEFORE_RETURN_135 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (= (mod v_bor_~res~0_BEFORE_RETURN_135 4294967296) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_bor_~res~0_BEFORE_RETURN_135 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_prenex_1000 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (<= (mod v_bor_~res~0_BEFORE_RETURN_136 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_136 4294967296) (- 4294967296)))) (and (not (<= (mod v_prenex_999 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0)))) (not (= main_~ret~0 main_~ret5~0))) (and (not (= main_~ret~0 main_~ret2~0)) (exists ((v_bor_~res~0_BEFORE_RETURN_136 Int) (v_bor_~res~0_BEFORE_RETURN_135 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (= (mod v_bor_~res~0_BEFORE_RETURN_135 4294967296) main_~ret5~0) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_bor_~res~0_BEFORE_RETURN_135 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (<= (mod v_prenex_1000 4294967296) 2147483647) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) (and (not (<= (mod v_bor_~res~0_BEFORE_RETURN_136 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= main_~ret5~0 (+ (mod v_bor_~res~0_BEFORE_RETURN_136 4294967296) (- 4294967296)))) (and (not (<= (mod v_prenex_999 4294967296) 2147483647)) (not (< main_~i~2 999)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0)))))) [2019-10-13 21:31:05,148 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 522#(and (not (< main_~i~2 999)) (<= 999 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 3996)) main_~temp~0)) [2019-10-13 21:31:05,148 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(or (exists ((v_prenex_971 Int) (v_bor_~res~0_BEFORE_RETURN_131 Int)) (or (and (<= (mod v_bor_~res~0_BEFORE_RETURN_131 4294967296) 2147483647) (= (mod v_bor_~res~0_BEFORE_RETURN_131 4294967296) |main_#t~ret5|) (not (< main_~i~1 1000))) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (= (+ (mod v_prenex_971 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000))))) (exists ((v_prenex_972 Int) (v_bor_~res~0_BEFORE_RETURN_132 Int)) (or (and (= (+ (mod v_bor_~res~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) |main_#t~ret5|) (not (< main_~i~1 1000)) (not (<= (mod v_bor_~res~0_BEFORE_RETURN_132 4294967296) 2147483647))) (and (not (< main_~i~1 1000)) (= (mod v_prenex_972 4294967296) |main_#t~ret5|) (<= (mod v_prenex_972 4294967296) 2147483647))))) [2019-10-13 21:31:05,148 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 424#true [2019-10-13 21:31:05,149 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 313#true [2019-10-13 21:31:05,149 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 587#true [2019-10-13 21:31:05,149 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 560#true [2019-10-13 21:31:05,593 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:31:05,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30, 11] total 69 [2019-10-13 21:31:05,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827729044] [2019-10-13 21:31:05,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 21:31:05,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:31:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 21:31:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=3090, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 21:31:05,597 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 70 states. [2019-10-13 21:31:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:31:11,122 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2019-10-13 21:31:11,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-10-13 21:31:11,122 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 67 [2019-10-13 21:31:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:31:11,123 INFO L225 Difference]: With dead ends: 104 [2019-10-13 21:31:11,123 INFO L226 Difference]: Without dead ends: 83 [2019-10-13 21:31:11,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3929 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5099, Invalid=12723, Unknown=0, NotChecked=0, Total=17822 [2019-10-13 21:31:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-13 21:31:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-13 21:31:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-13 21:31:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-10-13 21:31:11,139 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 67 [2019-10-13 21:31:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:31:11,139 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-10-13 21:31:11,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 21:31:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-10-13 21:31:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:31:11,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:31:11,141 INFO L380 BasicCegarLoop]: trace histogram [56, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:31:11,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:31:11,344 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:31:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:31:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1754158397, now seen corresponding path program 7 times [2019-10-13 21:31:11,345 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:31:11,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687080076] [2019-10-13 21:31:11,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:31:11,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:31:11,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:31:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:31:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 21:31:12,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687080076] [2019-10-13 21:31:12,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770162900] [2019-10-13 21:31:12,935 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:31:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:31:13,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 58 conjunts are in the unsatisfiable core [2019-10-13 21:31:13,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:31:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 21:31:13,229 INFO L321 TraceCheckSpWp]: Computing backward predicates...