/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:17:17,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:17:17,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:17:17,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:17:17,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:17:17,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:17:17,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:17:17,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:17:17,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:17:17,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:17:17,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:17:17,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:17:17,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:17:17,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:17:17,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:17:17,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:17:17,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:17:17,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:17:17,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:17:17,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:17:17,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:17:17,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:17:17,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:17:17,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:17:17,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:17:17,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:17:17,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:17:17,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:17:17,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:17:17,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:17:17,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:17:17,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:17:17,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:17:17,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:17:17,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:17:17,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:17:17,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:17:17,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:17:17,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:17:17,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:17:17,432 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:17:17,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:17:17,433 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:17:17,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:17:17,433 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:17:17,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:17:17,433 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:17:17,434 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:17:17,434 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:17:17,434 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:17:17,434 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:17:17,434 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:17:17,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:17:17,435 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:17:17,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:17:17,436 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:17:17,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:17:17,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:17:17,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:17:17,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:17:17,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:17:17,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:17:17,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:17:17,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:17:17,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:17:17,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:17:17,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:17:17,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:17:17,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:17:17,439 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:17:17,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:17:17,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:17:17,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:17:17,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:17:17,702 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:17:17,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-11-24 04:17:17,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c870c35/ba31e023a8c246f581ec02cb9e262895/FLAG2ade8aaab [2019-11-24 04:17:18,259 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:17:18,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-11-24 04:17:18,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c870c35/ba31e023a8c246f581ec02cb9e262895/FLAG2ade8aaab [2019-11-24 04:17:18,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c870c35/ba31e023a8c246f581ec02cb9e262895 [2019-11-24 04:17:18,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:17:18,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:17:18,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:17:18,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:17:18,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:17:18,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:17:18" (1/1) ... [2019-11-24 04:17:18,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d0d784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:18, skipping insertion in model container [2019-11-24 04:17:18,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:17:18" (1/1) ... [2019-11-24 04:17:18,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:17:18,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:17:19,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:17:19,104 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:17:19,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:17:19,220 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:17:19,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19 WrapperNode [2019-11-24 04:17:19,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:17:19,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:17:19,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:17:19,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:17:19,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:17:19,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:17:19,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:17:19,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:17:19,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (1/1) ... [2019-11-24 04:17:19,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:17:19,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:17:19,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:17:19,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:17:19,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (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 [2019-11-24 04:17:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:17:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-24 04:17:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:17:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:17:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:17:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:17:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:17:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:17:20,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:17:20,559 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 04:17:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:17:20 BoogieIcfgContainer [2019-11-24 04:17:20,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:17:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:17:20,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:17:20,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:17:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:17:18" (1/3) ... [2019-11-24 04:17:20,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ec93f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:17:20, skipping insertion in model container [2019-11-24 04:17:20,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:19" (2/3) ... [2019-11-24 04:17:20,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ec93f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:17:20, skipping insertion in model container [2019-11-24 04:17:20,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:17:20" (3/3) ... [2019-11-24 04:17:20,572 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-11-24 04:17:20,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:17:20,589 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:17:20,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:17:20,633 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:17:20,633 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:17:20,633 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:17:20,633 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:17:20,634 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:17:20,634 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:17:20,634 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:17:20,634 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:17:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-24 04:17:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-24 04:17:20,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:17:20,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:17:20,664 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:17:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:17:20,673 INFO L82 PathProgramCache]: Analyzing trace with hash -352673803, now seen corresponding path program 1 times [2019-11-24 04:17:20,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:17:20,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556405908] [2019-11-24 04:17:20,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:17:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:17:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:17:21,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556405908] [2019-11-24 04:17:21,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:17:21,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-24 04:17:21,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856978686] [2019-11-24 04:17:21,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-24 04:17:21,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:17:21,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-24 04:17:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-11-24 04:17:21,727 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 17 states. [2019-11-24 04:17:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:17:22,825 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2019-11-24 04:17:22,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-24 04:17:22,826 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2019-11-24 04:17:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:17:22,837 INFO L225 Difference]: With dead ends: 81 [2019-11-24 04:17:22,837 INFO L226 Difference]: Without dead ends: 52 [2019-11-24 04:17:22,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-11-24 04:17:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-24 04:17:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-11-24 04:17:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-24 04:17:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2019-11-24 04:17:22,877 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2019-11-24 04:17:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:17:22,878 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2019-11-24 04:17:22,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-24 04:17:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2019-11-24 04:17:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-24 04:17:22,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:17:22,880 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:17:22,880 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:17:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:17:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash -530558132, now seen corresponding path program 1 times [2019-11-24 04:17:22,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:17:22,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868962724] [2019-11-24 04:17:22,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:17:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:17:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:17:23,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868962724] [2019-11-24 04:17:23,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992155166] [2019-11-24 04:17:23,373 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 [2019-11-24 04:17:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:17:23,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 04:17:23,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:17:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:17:23,681 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:17:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:17:24,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190767490] [2019-11-24 04:17:24,743 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2019-11-24 04:17:24,743 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:17:24,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:17:24,756 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:17:24,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:17:27,182 WARN L192 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 275 DAG size of output: 221 [2019-11-24 04:18:03,238 WARN L192 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 1125 [2019-11-24 04:18:35,559 WARN L192 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1164 [2019-11-24 04:18:37,108 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-11-24 04:18:37,943 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-11-24 04:18:38,776 WARN L192 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 1319 [2019-11-24 04:18:40,801 WARN L192 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 1316 [2019-11-24 04:18:41,642 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31