/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_spec4_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:31:04,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:31:04,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:31:04,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:31:04,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:31:04,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:31:04,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:31:04,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:31:04,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:31:04,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:31:04,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:31:04,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:31:04,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:31:04,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:31:04,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:31:04,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:31:04,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:31:04,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:31:04,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:31:04,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:31:04,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:31:04,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:31:04,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:31:04,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:31:04,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:31:04,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:31:04,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:31:04,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:31:04,478 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 05:31:04,495 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:31:04,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:31:04,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:31:04,497 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:31:04,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:31:04,497 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:31:04,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:31:04,498 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:31:04,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:31:04,498 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:31:04,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:31:04,498 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:31:04,499 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:31:04,499 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:31:04,499 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:31:04,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:31:04,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:31:04,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:31:04,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:31:04,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:31:04,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:31:04,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:31:04,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:31:04,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:31:04,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:31:04,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:31:04,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:31:04,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:31:04,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:31:04,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:31:04,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:31:04,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:31:04,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:31:04,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:31:04,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:31:04,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:31:04,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:31:04,505 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:31:04,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:31:04,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:31:04,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:31:04,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:31:04,836 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:31:04,837 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-11-24 05:31:04,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb297999/5e0762cfed9346f0a0698b383734a147/FLAG1c3030f0b [2019-11-24 05:31:05,441 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:31:05,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-11-24 05:31:05,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb297999/5e0762cfed9346f0a0698b383734a147/FLAG1c3030f0b [2019-11-24 05:31:05,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb297999/5e0762cfed9346f0a0698b383734a147 [2019-11-24 05:31:05,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:31:05,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:31:05,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:31:05,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:31:05,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:31:05,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:31:05" (1/1) ... [2019-11-24 05:31:05,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790ce9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:05, skipping insertion in model container [2019-11-24 05:31:05,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:31:05" (1/1) ... [2019-11-24 05:31:05,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:31:05,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:31:06,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:31:06,345 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:31:06,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:31:06,503 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:31:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06 WrapperNode [2019-11-24 05:31:06,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:31:06,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:31:06,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:31:06,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:31:06,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:31:06,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:31:06,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:31:06,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:31:06,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (1/1) ... [2019-11-24 05:31:06,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:31:06,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:31:06,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:31:06,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:31:06,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (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 05:31:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:31:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:31:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:31:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:31:10,643 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:31:10,644 INFO L284 CfgBuilder]: Removed 348 assume(true) statements. [2019-11-24 05:31:10,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:31:10 BoogieIcfgContainer [2019-11-24 05:31:10,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:31:10,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:31:10,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:31:10,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:31:10,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:31:05" (1/3) ... [2019-11-24 05:31:10,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ed0827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:31:10, skipping insertion in model container [2019-11-24 05:31:10,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:06" (2/3) ... [2019-11-24 05:31:10,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ed0827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:31:10, skipping insertion in model container [2019-11-24 05:31:10,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:31:10" (3/3) ... [2019-11-24 05:31:10,654 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2019-11-24 05:31:10,665 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:31:10,672 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:31:10,684 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:31:10,713 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:31:10,713 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:31:10,713 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:31:10,714 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:31:10,714 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:31:10,714 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:31:10,714 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:31:10,714 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:31:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:31:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:31:10,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:31:10,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:31:10,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:31:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:31:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1157574490, now seen corresponding path program 1 times [2019-11-24 05:31:10,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:31:10,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459231524] [2019-11-24 05:31:10,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:31:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:11,224 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 05:31:11,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459231524] [2019-11-24 05:31:11,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:31:11,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:31:11,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061710171] [2019-11-24 05:31:11,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:31:11,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:31:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:31:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:31:11,250 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-11-24 05:31:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:31:11,396 INFO L93 Difference]: Finished difference Result 67 states and 94 transitions. [2019-11-24 05:31:11,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:31:11,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 05:31:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:31:11,409 INFO L225 Difference]: With dead ends: 67 [2019-11-24 05:31:11,409 INFO L226 Difference]: Without dead ends: 31 [2019-11-24 05:31:11,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:31:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-24 05:31:11,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2019-11-24 05:31:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:31:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-24 05:31:11,453 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-11-24 05:31:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:31:11,454 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-24 05:31:11,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:31:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-24 05:31:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:31:11,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:31:11,455 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:31:11,455 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:31:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:31:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash -83590710, now seen corresponding path program 1 times [2019-11-24 05:31:11,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:31:11,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970466336] [2019-11-24 05:31:11,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:31:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:11,926 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 05:31:11,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970466336] [2019-11-24 05:31:11,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672087066] [2019-11-24 05:31:11,927 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 05:31:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:12,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-24 05:31:12,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:31:12,421 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-11-24 05:31:12,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,688 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,829 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:12,982 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 05:31:12,983 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:31:13,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:13,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:13,491 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 05:31:13,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [539681579] [2019-11-24 05:31:13,554 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:31:13,555 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:31:13,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:31:13,576 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:31:13,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:31:23,340 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:31:24,954 WARN L192 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:31:25,092 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:31:25,676 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 598 DAG size of output: 598 [2019-11-24 05:31:26,633 WARN L192 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 05:31:34,069 WARN L192 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 1056 DAG size of output: 952 [2019-11-24 05:31:51,504 WARN L192 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 938 DAG size of output: 934