/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/array-examples/standard_init2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:07:49,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:07:49,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:07:49,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:07:49,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:07:49,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:07:49,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:07:49,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:07:49,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:07:49,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:07:49,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:07:49,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:07:49,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:07:49,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:07:49,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:07:49,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:07:49,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:07:49,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:07:49,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:07:49,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:07:49,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:07:49,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:07:49,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:07:49,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:07:49,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:07:49,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:07:49,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:07:49,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:07:49,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:07:49,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:07:49,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:07:49,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:07:49,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:07:49,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:07:49,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:07:49,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:07:49,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:07:49,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:07:49,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:07:49,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:07:49,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:07:49,188 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 [2019-11-23 23:07:49,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:07:49,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:07:49,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:07:49,207 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:07:49,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:07:49,208 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:07:49,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:07:49,208 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:07:49,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:07:49,208 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:07:49,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:07:49,209 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:07:49,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:07:49,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:07:49,209 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:07:49,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:07:49,212 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:07:49,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:07:49,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:07:49,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:07:49,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:07:49,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:07:49,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:07:49,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:07:49,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:07:49,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:07:49,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:07:49,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:07:49,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:07:49,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:07:49,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:07:49,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:07:49,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:07:49,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:07:49,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:07:49,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:07:49,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:07:49,216 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:07:49,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:07:49,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:07:49,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:07:49,560 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:07:49,560 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:07:49,561 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init2_ground-1.i [2019-11-23 23:07:49,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade6bcab/12ad565d42924373bdb8a5d41c262579/FLAGc92759c09 [2019-11-23 23:07:50,062 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:07:50,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init2_ground-1.i [2019-11-23 23:07:50,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade6bcab/12ad565d42924373bdb8a5d41c262579/FLAGc92759c09 [2019-11-23 23:07:50,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ade6bcab/12ad565d42924373bdb8a5d41c262579 [2019-11-23 23:07:50,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:07:50,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:07:50,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:07:50,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:07:50,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:07:50,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449a522b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50, skipping insertion in model container [2019-11-23 23:07:50,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:07:50,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:07:50,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:07:50,725 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:07:50,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:07:50,758 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:07:50,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50 WrapperNode [2019-11-23 23:07:50,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:07:50,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:07:50,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:07:50,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:07:50,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:07:50,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:07:50,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:07:50,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:07:50,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (1/1) ... [2019-11-23 23:07:50,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:07:50,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:07:50,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:07:50,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:07:50,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (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 [2019-11-23 23:07:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:07:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:07:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:07:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:07:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:07:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:07:51,294 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:07:51,294 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:07:51,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:51 BoogieIcfgContainer [2019-11-23 23:07:51,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:07:51,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:07:51,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:07:51,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:07:51,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:07:50" (1/3) ... [2019-11-23 23:07:51,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36094d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:51, skipping insertion in model container [2019-11-23 23:07:51,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:50" (2/3) ... [2019-11-23 23:07:51,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36094d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:51, skipping insertion in model container [2019-11-23 23:07:51,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:51" (3/3) ... [2019-11-23 23:07:51,305 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init2_ground-1.i [2019-11-23 23:07:51,314 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:07:51,321 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:07:51,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:07:51,354 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:07:51,354 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:07:51,354 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:07:51,354 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:07:51,354 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:07:51,354 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:07:51,354 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:07:51,354 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:07:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:07:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:07:51,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:07:51,372 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:07:51,372 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:07:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:07:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1742289615, now seen corresponding path program 1 times [2019-11-23 23:07:51,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:07:51,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172552047] [2019-11-23 23:07:51,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:07:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:07:51,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172552047] [2019-11-23 23:07:51,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:07:51,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:07:51,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857543333] [2019-11-23 23:07:51,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:07:51,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:07:51,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:07:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:07:51,578 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:07:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:07:51,619 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2019-11-23 23:07:51,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:07:51,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:07:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:07:51,633 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:07:51,634 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:07:51,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:07:51,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:07:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:07:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:07:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:07:51,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-23 23:07:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:07:51,677 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:07:51,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:07:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:07:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:07:51,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:07:51,678 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:07:51,678 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:07:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:07:51,679 INFO L82 PathProgramCache]: Analyzing trace with hash 63254386, now seen corresponding path program 1 times [2019-11-23 23:07:51,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:07:51,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371523357] [2019-11-23 23:07:51,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:07:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:51,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371523357] [2019-11-23 23:07:51,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111724435] [2019-11-23 23:07:51,775 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 [2019-11-23 23:07:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:51,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:07:51,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:07:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:51,852 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:07:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:51,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386959565] [2019-11-23 23:07:51,900 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:07:51,900 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:07:51,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:07:51,912 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:07:51,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:08:52,935 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 329 [2019-11-23 23:08:53,085 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 327 [2019-11-23 23:09:00,329 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 344 [2019-11-23 23:09:02,676 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 345 [2019-11-23 23:09:05,277 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 342 [2019-11-23 23:09:13,479 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 358 [2019-11-23 23:09:16,180 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 359 [2019-11-23 23:09:19,140 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 365 [2019-11-23 23:09:22,028 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2019-11-23 23:09:22,148 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 378 DAG size of output: 373