/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/email_spec6_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:06:06,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:06:06,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:06:06,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:06:06,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:06:06,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:06:06,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:06:06,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:06:06,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:06:06,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:06:06,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:06:06,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:06:06,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:06:06,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:06:06,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:06:06,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:06:06,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:06:06,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:06:06,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:06:06,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:06:06,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:06:06,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:06:06,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:06:06,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:06:06,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:06:06,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:06:06,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:06:06,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:06:06,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:06:06,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:06:06,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:06:06,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:06:06,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:06:06,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:06:06,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:06:06,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:06:06,582 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 05:06:06,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:06:06,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:06:06,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:06:06,609 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:06:06,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:06:06,610 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:06:06,610 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:06:06,610 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:06:06,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:06:06,610 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:06:06,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:06:06,611 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:06:06,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:06:06,611 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:06:06,611 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:06:06,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:06:06,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:06:06,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:06:06,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:06:06,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:06:06,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:06:06,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:06:06,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:06:06,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:06:06,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:06:06,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:06:06,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:06:06,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:06:06,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:06:06,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:06:06,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:06:06,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:06:06,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:06:06,616 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:06:06,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:06:06,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:06:06,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:06:06,617 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:06:06,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:06:06,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:06:06,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:06:06,930 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:06:06,931 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:06:06,931 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2019-11-24 05:06:07,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108fe85cc/7c0cd1a31a2a43e8ab0e2455d42d0370/FLAG8eafd6cd2 [2019-11-24 05:06:07,671 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:06:07,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2019-11-24 05:06:07,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108fe85cc/7c0cd1a31a2a43e8ab0e2455d42d0370/FLAG8eafd6cd2 [2019-11-24 05:06:07,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108fe85cc/7c0cd1a31a2a43e8ab0e2455d42d0370 [2019-11-24 05:06:07,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:06:07,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:06:07,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:06:07,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:06:07,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:06:07,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:06:07" (1/1) ... [2019-11-24 05:06:07,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4c426d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:07, skipping insertion in model container [2019-11-24 05:06:07,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:06:07" (1/1) ... [2019-11-24 05:06:07,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:06:07,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:06:08,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:06:08,760 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:06:08,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:06:08,957 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:06:08,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08 WrapperNode [2019-11-24 05:06:08,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:06:08,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:06:08,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:06:08,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:06:08,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:06:09,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:06:09,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:06:09,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:06:09,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (1/1) ... [2019-11-24 05:06:09,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:06:09,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:06:09,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:06:09,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:06:09,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (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 05:06:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:06:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:06:17,021 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:06:17,022 INFO L284 CfgBuilder]: Removed 303 assume(true) statements. [2019-11-24 05:06:17,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:06:17 BoogieIcfgContainer [2019-11-24 05:06:17,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:06:17,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:06:17,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:06:17,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:06:17,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:06:07" (1/3) ... [2019-11-24 05:06:17,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785f72f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:06:17, skipping insertion in model container [2019-11-24 05:06:17,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:06:08" (2/3) ... [2019-11-24 05:06:17,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785f72f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:06:17, skipping insertion in model container [2019-11-24 05:06:17,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:06:17" (3/3) ... [2019-11-24 05:06:17,038 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2019-11-24 05:06:17,050 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:06:17,058 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 05:06:17,074 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 05:06:17,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:06:17,108 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:06:17,108 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:06:17,108 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:06:17,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:06:17,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:06:17,109 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:06:17,109 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:06:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-24 05:06:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:06:17,132 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:06:17,133 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:06:17,133 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:06:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:06:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -333033964, now seen corresponding path program 1 times [2019-11-24 05:06:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:06:17,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317772012] [2019-11-24 05:06:17,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:06:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:06:17,488 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 05:06:17,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317772012] [2019-11-24 05:06:17,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:06:17,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:06:17,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981471200] [2019-11-24 05:06:17,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:06:17,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:06:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:06:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:06:17,513 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-24 05:06:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:06:17,539 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-11-24 05:06:17,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:06:17,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:06:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:06:17,554 INFO L225 Difference]: With dead ends: 54 [2019-11-24 05:06:17,555 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 05:06:17,560 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 05:06:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 05:06:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 05:06:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:06:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 05:06:17,615 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 7 [2019-11-24 05:06:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:06:17,616 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 05:06:17,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:06:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 05:06:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:06:17,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:06:17,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:06:17,618 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:06:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:06:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1783376627, now seen corresponding path program 1 times [2019-11-24 05:06:17,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:06:17,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813642752] [2019-11-24 05:06:17,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:06:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:06:17,834 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 05:06:17,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813642752] [2019-11-24 05:06:17,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:06:17,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:06:17,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774095692] [2019-11-24 05:06:17,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:06:17,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:06:17,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:06:17,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:06:17,838 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 3 states. [2019-11-24 05:06:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:06:17,858 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-11-24 05:06:17,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:06:17,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:06:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:06:17,860 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:06:17,860 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 05:06:17,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:06:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 05:06:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-24 05:06:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-24 05:06:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2019-11-24 05:06:17,869 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 8 [2019-11-24 05:06:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:06:17,869 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2019-11-24 05:06:17,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:06:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2019-11-24 05:06:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:06:17,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:06:17,871 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:06:17,871 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:06:17,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:06:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash 503338953, now seen corresponding path program 1 times [2019-11-24 05:06:17,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:06:17,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326974702] [2019-11-24 05:06:17,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:06:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:06:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:06:18,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326974702] [2019-11-24 05:06:18,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965539892] [2019-11-24 05:06:18,124 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 05:06:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:06:18,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:06:18,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:06:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:06:18,580 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:06:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:06:18,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [271174184] [2019-11-24 05:06:18,648 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 05:06:18,648 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:06:18,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:06:18,660 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:06:18,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:07:08,521 WARN L192 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 689 [2019-11-24 05:07:12,867 WARN L192 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 316 DAG size of output: 257 [2019-11-24 05:07:13,314 WARN L192 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-11-24 05:07:13,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8