/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_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:34:46,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:34:46,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:34:46,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:34:46,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:34:46,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:34:46,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:34:46,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:34:46,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:34:46,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:34:46,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:34:46,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:34:46,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:34:46,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:34:46,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:34:46,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:34:46,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:34:46,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:34:46,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:34:46,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:34:46,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:34:46,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:34:46,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:34:46,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:34:46,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:34:46,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:34:46,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:34:46,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:34:46,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:34:46,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:34:46,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:34:46,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:34:46,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:34:46,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:34:46,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:34:46,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:34:46,410 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 05:34:46,426 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:34:46,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:34:46,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:34:46,427 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:34:46,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:34:46,427 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:34:46,427 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:34:46,428 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:34:46,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:34:46,428 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:34:46,428 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:34:46,428 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:34:46,429 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:34:46,429 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:34:46,429 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:34:46,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:34:46,430 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:34:46,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:34:46,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:34:46,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:34:46,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:34:46,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:34:46,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:34:46,431 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:34:46,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:34:46,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:34:46,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:34:46,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:34:46,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:34:46,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:34:46,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:34:46,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:34:46,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:34:46,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:34:46,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:34:46,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:34:46,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:34:46,434 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:34:46,697 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:34:46,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:34:46,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:34:46,720 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:34:46,721 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:34:46,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-11-24 05:34:46,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8e8642a/9ca6aae673b14fa98b27f46fca4d9b70/FLAGd294bc7ef [2019-11-24 05:34:47,305 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:34:47,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-11-24 05:34:47,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8e8642a/9ca6aae673b14fa98b27f46fca4d9b70/FLAGd294bc7ef [2019-11-24 05:34:47,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8e8642a/9ca6aae673b14fa98b27f46fca4d9b70 [2019-11-24 05:34:47,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:34:47,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:34:47,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:47,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:34:47,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:34:47,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:47" (1/1) ... [2019-11-24 05:34:47,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb3baf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:47, skipping insertion in model container [2019-11-24 05:34:47,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:47" (1/1) ... [2019-11-24 05:34:47,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:34:47,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:34:48,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:48,200 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:34:48,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:48,355 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:34:48,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48 WrapperNode [2019-11-24 05:34:48,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:48,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:48,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:34:48,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:34:48,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:48,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:34:48,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:34:48,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:34:48,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:34:48,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:34:48,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:34:48,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:34:48,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (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 05:34:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:34:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:34:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:34:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:34:51,131 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:34:51,132 INFO L284 CfgBuilder]: Removed 210 assume(true) statements. [2019-11-24 05:34:51,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:51 BoogieIcfgContainer [2019-11-24 05:34:51,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:34:51,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:34:51,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:34:51,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:34:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:34:47" (1/3) ... [2019-11-24 05:34:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:51, skipping insertion in model container [2019-11-24 05:34:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48" (2/3) ... [2019-11-24 05:34:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:51, skipping insertion in model container [2019-11-24 05:34:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:51" (3/3) ... [2019-11-24 05:34:51,141 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-11-24 05:34:51,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:34:51,158 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:34:51,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:34:51,195 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:34:51,195 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:34:51,195 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:34:51,196 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:34:51,198 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:34:51,198 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:34:51,198 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:34:51,198 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:34:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:34:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:34:51,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:51,228 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:51,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:51,236 INFO L82 PathProgramCache]: Analyzing trace with hash -456678399, now seen corresponding path program 1 times [2019-11-24 05:34:51,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:51,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952476705] [2019-11-24 05:34:51,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:51,830 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 05:34:51,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952476705] [2019-11-24 05:34:51,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:34:51,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:34:51,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020249034] [2019-11-24 05:34:51,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:34:51,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:34:51,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:34:51,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:34:51,857 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:34:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:34:52,098 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:34:52,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:34:52,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:34:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:34:52,113 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:34:52,113 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:34:52,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:34:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:34:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:34:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:34:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:34:52,160 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:34:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:34:52,161 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:34:52,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:34:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:34:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:34:52,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:52,162 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:52,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:52,163 INFO L82 PathProgramCache]: Analyzing trace with hash 875481125, now seen corresponding path program 1 times [2019-11-24 05:34:52,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:52,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802084799] [2019-11-24 05:34:52,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:52,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802084799] [2019-11-24 05:34:52,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134646883] [2019-11-24 05:34:52,409 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 05:34:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:52,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:34:52,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:34:52,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:52,707 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:34:52,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:52,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1596153650] [2019-11-24 05:34:52,786 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:34:52,786 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:34:52,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:34:52,799 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:34:52,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:35:03,099 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:35:04,739 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:35:04,881 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:35:06,268 WARN L192 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 752 DAG size of output: 701 [2019-11-24 05:35:10,467 WARN L192 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 802 DAG size of output: 802 [2019-11-24 05:35:16,191 WARN L192 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 1513 DAG size of output: 1066 [2019-11-24 05:35:58,765 WARN L192 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 1018 DAG size of output: 958 [2019-11-24 05:36:05,042 WARN L192 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 945 DAG size of output: 944 [2019-11-24 05:36:06,746 WARN L192 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 945 DAG size of output: 944 [2019-11-24 05:36:08,356 WARN L192 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 944 DAG size of output: 944 [2019-11-24 05:36:09,732 WARN L192 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 945 DAG size of output: 944 [2019-11-24 05:36:11,120 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 945 DAG size of output: 944 [2019-11-24 05:36:12,700 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 944 DAG size of output: 944 [2019-11-24 05:36:12,709 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:36:17,759 WARN L192 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 486 DAG size of output: 431