/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_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:42,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:42,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:42,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:42,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:42,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:42,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:42,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:42,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:42,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:42,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:42,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:42,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:42,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:42,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:42,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:42,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:42,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:42,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:42,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:42,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:42,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:42,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:42,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:42,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:25:42,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:25:42,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:25:42,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:25:42,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:25:42,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:25:42,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:25:42,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:25:42,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:42,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:42,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:42,530 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 05:25:42,566 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:42,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:42,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:42,571 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:42,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:42,571 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:42,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:42,571 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:42,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:42,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:42,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:42,572 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:42,572 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:42,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:42,575 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:42,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:42,576 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:42,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:42,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:42,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:42,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:42,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:42,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:42,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:42,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:42,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:42,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:42,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:42,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:42,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:42,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:42,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:42,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:42,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:42,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:42,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:42,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:42,581 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:42,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:42,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:42,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:42,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:42,922 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:42,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-11-24 05:25:42,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d695351e7/af6dd1ac4eb84bf5953c7ccc7f18b1c2/FLAG491a78111 [2019-11-24 05:25:43,483 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:43,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-11-24 05:25:43,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d695351e7/af6dd1ac4eb84bf5953c7ccc7f18b1c2/FLAG491a78111 [2019-11-24 05:25:43,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d695351e7/af6dd1ac4eb84bf5953c7ccc7f18b1c2 [2019-11-24 05:25:43,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:43,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:43,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:43,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:43,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:43,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:43" (1/1) ... [2019-11-24 05:25:43,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ffab9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:43, skipping insertion in model container [2019-11-24 05:25:43,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:43" (1/1) ... [2019-11-24 05:25:43,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:43,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:44,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:44,350 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:44,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:44,484 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:44,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44 WrapperNode [2019-11-24 05:25:44,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:44,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:44,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:44,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:44,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:44,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:44,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:44,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:44,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (1/1) ... [2019-11-24 05:25:44,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:44,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:44,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:44,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:44,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (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 05:25:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:25:46,099 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:25:46,100 INFO L284 CfgBuilder]: Removed 102 assume(true) statements. [2019-11-24 05:25:46,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:46 BoogieIcfgContainer [2019-11-24 05:25:46,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:25:46,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:25:46,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:25:46,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:25:46,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:43" (1/3) ... [2019-11-24 05:25:46,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f86092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:46, skipping insertion in model container [2019-11-24 05:25:46,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:44" (2/3) ... [2019-11-24 05:25:46,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f86092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:46, skipping insertion in model container [2019-11-24 05:25:46,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:46" (3/3) ... [2019-11-24 05:25:46,114 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2019-11-24 05:25:46,123 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:25:46,131 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:25:46,143 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:25:46,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:25:46,173 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:25:46,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:25:46,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:25:46,175 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:25:46,175 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:25:46,175 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:25:46,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:25:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:25:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:25:46,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:46,208 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:46,209 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash 508672749, now seen corresponding path program 1 times [2019-11-24 05:25:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:46,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298805482] [2019-11-24 05:25:46,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:46,491 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 05:25:46,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298805482] [2019-11-24 05:25:46,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:46,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:25:46,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590031207] [2019-11-24 05:25:46,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:25:46,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:25:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:25:46,516 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:25:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:46,540 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:25:46,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:25:46,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:25:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:46,554 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:25:46,554 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:25:46,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:25:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:25:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:25:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:25:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:25:46,596 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:25:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:46,596 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:25:46,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:25:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:25:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:25:46,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:46,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:46,598 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1326608796, now seen corresponding path program 1 times [2019-11-24 05:25:46,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:46,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176727489] [2019-11-24 05:25:46,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:46,788 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 05:25:46,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176727489] [2019-11-24 05:25:46,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:46,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:25:46,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939799784] [2019-11-24 05:25:46,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:25:46,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:25:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:25:46,793 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 6 states. [2019-11-24 05:25:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:47,146 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2019-11-24 05:25:47,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:25:47,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:25:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:47,148 INFO L225 Difference]: With dead ends: 90 [2019-11-24 05:25:47,148 INFO L226 Difference]: Without dead ends: 42 [2019-11-24 05:25:47,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:25:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-24 05:25:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2019-11-24 05:25:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-24 05:25:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2019-11-24 05:25:47,157 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 8 [2019-11-24 05:25:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:47,158 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2019-11-24 05:25:47,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:25:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2019-11-24 05:25:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:25:47,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:47,159 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:47,159 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash -610505596, now seen corresponding path program 1 times [2019-11-24 05:25:47,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:47,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270093960] [2019-11-24 05:25:47,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:25:47,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270093960] [2019-11-24 05:25:47,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108280206] [2019-11-24 05:25:47,302 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 05:25:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:47,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-24 05:25:47,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:25:47,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:47,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:47,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:47,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:25:47,542 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:25:47,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:25:47,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749176999] [2019-11-24 05:25:47,619 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:25:47,620 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:25:47,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:25:47,636 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:25:47,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:25:58,003 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:25:59,820 WARN L192 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:25:59,985 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:00,744 WARN L192 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 577 [2019-11-24 05:26:01,651 WARN L192 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 677 [2019-11-24 05:26:05,290 WARN L192 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 921 DAG size of output: 831 [2019-11-24 05:26:09,848 WARN L192 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 824 DAG size of output: 817 [2019-11-24 05:26:34,374 WARN L192 SmtUtils]: Spent 19.08 s on a formula simplification. DAG size of input: 1740 DAG size of output: 1156 [2019-11-24 05:27:06,457 WARN L192 SmtUtils]: Spent 14.11 s on a formula simplification. DAG size of input: 1117 DAG size of output: 1092