/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/product-lines/minepump_spec1_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:19:44,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:19:44,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:19:44,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:19:44,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:19:44,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:19:44,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:19:44,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:19:44,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:19:44,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:19:44,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:19:44,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:19:44,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:19:44,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:19:44,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:19:44,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:19:44,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:19:44,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:19:44,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:19:44,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:19:44,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:19:44,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:19:44,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:19:44,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:19:44,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:19:44,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:19:44,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:19:44,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:19:44,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:19:44,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:19:44,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:19:44,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:19:44,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:19:44,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:19:44,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:19:44,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:19:44,185 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 05:19:44,202 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:19:44,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:19:44,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:19:44,203 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:19:44,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:19:44,204 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:19:44,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:19:44,204 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:19:44,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:19:44,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:19:44,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:19:44,205 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:19:44,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:19:44,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:19:44,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:19:44,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:19:44,206 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:19:44,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:19:44,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:19:44,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:19:44,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:19:44,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:19:44,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:19:44,208 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:19:44,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:19:44,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:19:44,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:19:44,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:19:44,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:19:44,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:19:44,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:19:44,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:19:44,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:19:44,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:19:44,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:19:44,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:19:44,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:19:44,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:19:44,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:19:44,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:19:44,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:19:44,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:19:44,496 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:19:44,497 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product64.cil.c [2019-11-24 05:19:44,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb278e90/0d0778d339134709b3d970cb309be2f4/FLAG6b983344e [2019-11-24 05:19:45,152 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:19:45,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product64.cil.c [2019-11-24 05:19:45,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb278e90/0d0778d339134709b3d970cb309be2f4/FLAG6b983344e [2019-11-24 05:19:45,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb278e90/0d0778d339134709b3d970cb309be2f4 [2019-11-24 05:19:45,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:19:45,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:19:45,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:45,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:19:45,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:19:45,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f043480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45, skipping insertion in model container [2019-11-24 05:19:45,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:19:45,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:19:46,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:46,069 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:19:46,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:46,224 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:19:46,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46 WrapperNode [2019-11-24 05:19:46,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:46,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:46,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:19:46,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:19:46,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:46,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:19:46,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:19:46,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:19:46,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (1/1) ... [2019-11-24 05:19:46,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:19:46,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:19:46,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:19:46,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:19:46,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (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 05:19:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:19:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:19:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:19:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:19:50,619 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:19:50,620 INFO L284 CfgBuilder]: Removed 354 assume(true) statements. [2019-11-24 05:19:50,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:50 BoogieIcfgContainer [2019-11-24 05:19:50,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:19:50,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:19:50,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:19:50,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:19:50,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:19:45" (1/3) ... [2019-11-24 05:19:50,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1277034b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:50, skipping insertion in model container [2019-11-24 05:19:50,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:46" (2/3) ... [2019-11-24 05:19:50,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1277034b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:50, skipping insertion in model container [2019-11-24 05:19:50,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:50" (3/3) ... [2019-11-24 05:19:50,632 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product64.cil.c [2019-11-24 05:19:50,642 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:19:50,653 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:19:50,671 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:19:50,705 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:19:50,705 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:19:50,706 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:19:50,706 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:19:50,706 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:19:50,706 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:19:50,707 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:19:50,707 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:19:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:19:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:19:50,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:50,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:50,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 784959979, now seen corresponding path program 1 times [2019-11-24 05:19:50,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:50,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53687489] [2019-11-24 05:19:50,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:51,313 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 05:19:51,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53687489] [2019-11-24 05:19:51,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:19:51,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:19:51,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994605332] [2019-11-24 05:19:51,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:19:51,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:19:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:19:51,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:19:51,339 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-24 05:19:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:19:51,620 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2019-11-24 05:19:51,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:19:51,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:19:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:19:51,640 INFO L225 Difference]: With dead ends: 70 [2019-11-24 05:19:51,641 INFO L226 Difference]: Without dead ends: 41 [2019-11-24 05:19:51,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:19:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-24 05:19:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-11-24 05:19:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:19:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-24 05:19:51,720 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 7 [2019-11-24 05:19:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:19:51,721 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-24 05:19:51,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:19:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-24 05:19:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:19:51,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:51,723 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:51,724 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:51,725 INFO L82 PathProgramCache]: Analyzing trace with hash 980318343, now seen corresponding path program 1 times [2019-11-24 05:19:51,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:51,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416510981] [2019-11-24 05:19:51,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:52,138 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 05:19:52,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416510981] [2019-11-24 05:19:52,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303829838] [2019-11-24 05:19:52,140 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 05:19:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:52,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-24 05:19:52,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:19:52,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,843 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2019-11-24 05:19:53,036 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:19:53,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,326 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 05:19:53,326 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:19:53,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:53,660 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 05:19:53,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1919261000] [2019-11-24 05:19:53,715 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:19:53,715 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:19:53,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:19:53,734 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:19:53,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:20:02,087 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:20:03,716 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:20:03,856 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:20:05,477 WARN L192 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 810 DAG size of output: 752 [2019-11-24 05:20:11,110 WARN L192 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 852 DAG size of output: 850 [2019-11-24 05:20:38,743 WARN L192 SmtUtils]: Spent 20.65 s on a formula simplification. DAG size of input: 3525 DAG size of output: 2393 [2019-11-24 05:20:43,050 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 05:20:47,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 05:20:59,035 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5880 conjuctions. This might take some time... [2019-11-24 05:21:07,856 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8323 conjuctions. This might take some time...