/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_spec2_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:24:27,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:24:27,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:24:27,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:24:27,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:24:27,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:24:27,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:24:27,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:24:27,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:24:27,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:24:27,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:24:27,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:24:27,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:24:27,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:24:27,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:24:27,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:24:27,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:24:27,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:24:27,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:24:27,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:24:27,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:24:27,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:24:27,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:24:27,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:24:27,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:24:27,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:24:27,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:24:27,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:24:27,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:24:27,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:24:27,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:24:27,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:24:27,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:24:27,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:24:27,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:24:27,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:24:27,223 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 05:24:27,249 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:24:27,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:24:27,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:24:27,251 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:24:27,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:24:27,252 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:24:27,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:24:27,252 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:24:27,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:24:27,253 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:24:27,254 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:24:27,254 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:24:27,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:24:27,255 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:24:27,255 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:24:27,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:24:27,256 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:24:27,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:24:27,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:24:27,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:24:27,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:24:27,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:24:27,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:24:27,258 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:24:27,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:24:27,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:24:27,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:24:27,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:24:27,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:24:27,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:24:27,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:24:27,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:24:27,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:24:27,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:24:27,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:24:27,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:24:27,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:24:27,262 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:24:27,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:24:27,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:24:27,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:24:27,565 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:24:27,565 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:24:27,566 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-11-24 05:24:27,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef9d6c4a/8231ee0c8da948f38bc1f23373422b68/FLAG00778ffb8 [2019-11-24 05:24:28,169 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:24:28,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-11-24 05:24:28,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef9d6c4a/8231ee0c8da948f38bc1f23373422b68/FLAG00778ffb8 [2019-11-24 05:24:28,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef9d6c4a/8231ee0c8da948f38bc1f23373422b68 [2019-11-24 05:24:28,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:24:28,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:24:28,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:24:28,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:24:28,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:24:28,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:24:28" (1/1) ... [2019-11-24 05:24:28,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6768693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:28, skipping insertion in model container [2019-11-24 05:24:28,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:24:28" (1/1) ... [2019-11-24 05:24:28,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:24:28,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:24:29,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:24:29,020 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:24:29,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:24:29,166 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:24:29,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29 WrapperNode [2019-11-24 05:24:29,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:24:29,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:24:29,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:24:29,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:24:29,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:24:29,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:24:29,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:24:29,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:24:29,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (1/1) ... [2019-11-24 05:24:29,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:24:29,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:24:29,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:24:29,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:24:29,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (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 05:24:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:24:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:24:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:24:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:24:33,770 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:24:33,771 INFO L284 CfgBuilder]: Removed 354 assume(true) statements. [2019-11-24 05:24:33,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:24:33 BoogieIcfgContainer [2019-11-24 05:24:33,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:24:33,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:24:33,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:24:33,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:24:33,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:24:28" (1/3) ... [2019-11-24 05:24:33,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca9ca66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:24:33, skipping insertion in model container [2019-11-24 05:24:33,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:24:29" (2/3) ... [2019-11-24 05:24:33,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca9ca66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:24:33, skipping insertion in model container [2019-11-24 05:24:33,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:24:33" (3/3) ... [2019-11-24 05:24:33,786 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-11-24 05:24:33,795 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:24:33,804 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:24:33,816 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:24:33,849 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:24:33,849 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:24:33,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:24:33,850 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:24:33,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:24:33,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:24:33,852 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:24:33,852 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:24:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:24:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:24:33,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:24:33,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:24:33,883 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:24:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:24:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2128509160, now seen corresponding path program 1 times [2019-11-24 05:24:33,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:24:33,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965564170] [2019-11-24 05:24:33,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:24:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:24:34,304 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 05:24:34,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965564170] [2019-11-24 05:24:34,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:24:34,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:24:34,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025774647] [2019-11-24 05:24:34,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:24:34,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:24:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:24:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:24:34,331 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:24:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:24:34,489 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:24:34,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:24:34,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:24:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:24:34,503 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:24:34,503 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:24:34,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:24:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:24:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:24:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:24:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:24:34,549 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:24:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:24:34,550 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:24:34,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:24:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:24:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:24:34,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:24:34,552 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:24:34,552 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:24:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:24:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash -472399309, now seen corresponding path program 1 times [2019-11-24 05:24:34,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:24:34,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594717517] [2019-11-24 05:24:34,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:24:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:24:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:24:34,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594717517] [2019-11-24 05:24:34,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:24:34,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:24:34,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35586180] [2019-11-24 05:24:34,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:24:34,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:24:34,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:24:34,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:24:34,845 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:24:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:24:35,024 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2019-11-24 05:24:35,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:24:35,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:24:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:24:35,027 INFO L225 Difference]: With dead ends: 98 [2019-11-24 05:24:35,027 INFO L226 Difference]: Without dead ends: 60 [2019-11-24 05:24:35,030 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 05:24:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-24 05:24:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2019-11-24 05:24:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-24 05:24:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2019-11-24 05:24:35,050 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 13 [2019-11-24 05:24:35,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:24:35,050 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2019-11-24 05:24:35,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:24:35,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2019-11-24 05:24:35,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:24:35,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:24:35,053 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:24:35,054 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:24:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:24:35,054 INFO L82 PathProgramCache]: Analyzing trace with hash 715485536, now seen corresponding path program 1 times [2019-11-24 05:24:35,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:24:35,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108301258] [2019-11-24 05:24:35,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:24:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:24:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:24:35,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108301258] [2019-11-24 05:24:35,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184830540] [2019-11-24 05:24:35,426 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 05:24:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:24:35,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-24 05:24:35,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:24:35,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,688 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:35,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,068 WARN L192 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2019-11-24 05:24:36,273 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:24:36,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:36,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:37,566 WARN L192 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 170 DAG size of output: 110 [2019-11-24 05:24:37,911 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2019-11-24 05:24:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:24:37,923 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:24:37,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:37,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:37,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:24:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:24:38,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685949499] [2019-11-24 05:24:38,326 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:24:38,328 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:24:38,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:24:38,346 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:24:38,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:24:46,658 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:24:48,265 WARN L192 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:24:48,399 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:24:49,200 WARN L192 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 619 [2019-11-24 05:24:49,763 WARN L192 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 619 [2019-11-24 05:24:50,249 WARN L192 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 617 [2019-11-24 05:25:01,243 WARN L192 SmtUtils]: Spent 6.65 s on a formula simplification. DAG size of input: 2249 DAG size of output: 1399 [2019-11-24 05:25:18,784 WARN L192 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 1431 DAG size of output: 1396 [2019-11-24 05:25:21,801 WARN L192 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 1067 DAG size of output: 1060 [2019-11-24 05:25:24,552 WARN L192 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 1067 DAG size of output: 1060 [2019-11-24 05:25:27,416 WARN L192 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 1058 DAG size of output: 1057