/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_spec7_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:09:55,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:09:55,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:09:55,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:09:55,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:09:55,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:09:55,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:09:55,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:09:55,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:09:55,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:09:55,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:09:55,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:09:55,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:09:55,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:09:55,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:09:55,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:09:55,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:09:55,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:09:55,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:09:55,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:09:55,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:09:55,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:09:55,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:09:55,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:09:55,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:09:55,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:09:55,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:09:55,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:09:55,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:09:55,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:09:55,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:09:55,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:09:55,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:09:55,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:09:55,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:09:55,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:09:55,523 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 05:09:55,539 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:09:55,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:09:55,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:09:55,540 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:09:55,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:09:55,541 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:09:55,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:09:55,541 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:09:55,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:09:55,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:09:55,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:09:55,542 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:09:55,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:09:55,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:09:55,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:09:55,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:09:55,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:09:55,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:09:55,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:09:55,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:09:55,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:09:55,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:09:55,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:09:55,545 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:09:55,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:09:55,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:09:55,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:09:55,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:09:55,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:09:55,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:09:55,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:09:55,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:09:55,548 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:09:55,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:09:55,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:09:55,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:09:55,851 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:09:55,852 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:09:55,853 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product34.cil.c [2019-11-24 05:09:55,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800731358/de1ee36b70a04149805b498bb9942213/FLAG4b9dc0fbe [2019-11-24 05:09:56,556 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:09:56,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product34.cil.c [2019-11-24 05:09:56,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800731358/de1ee36b70a04149805b498bb9942213/FLAG4b9dc0fbe [2019-11-24 05:09:56,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800731358/de1ee36b70a04149805b498bb9942213 [2019-11-24 05:09:56,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:09:56,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:09:56,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:56,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:09:56,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:09:56,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:56" (1/1) ... [2019-11-24 05:09:56,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6345ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:56, skipping insertion in model container [2019-11-24 05:09:56,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:56" (1/1) ... [2019-11-24 05:09:56,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:09:56,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:09:57,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:57,796 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:09:57,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:58,036 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:09:58,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58 WrapperNode [2019-11-24 05:09:58,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:58,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:58,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:09:58,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:09:58,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:58,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:09:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:09:58,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:09:58,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (1/1) ... [2019-11-24 05:09:58,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:09:58,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:09:58,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:09:58,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:09:58,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (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 05:09:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:09:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:09:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:09:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:09:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:10:20,642 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:10:20,643 INFO L284 CfgBuilder]: Removed 861 assume(true) statements. [2019-11-24 05:10:20,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:20 BoogieIcfgContainer [2019-11-24 05:10:20,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:10:20,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:10:20,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:10:20,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:10:20,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:09:56" (1/3) ... [2019-11-24 05:10:20,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d55373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:20, skipping insertion in model container [2019-11-24 05:10:20,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:58" (2/3) ... [2019-11-24 05:10:20,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d55373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:20, skipping insertion in model container [2019-11-24 05:10:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:20" (3/3) ... [2019-11-24 05:10:20,666 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product34.cil.c [2019-11-24 05:10:20,677 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:10:20,687 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:10:20,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:10:20,736 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:10:20,738 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:10:20,738 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:10:20,738 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:10:20,738 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:10:20,738 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:10:20,739 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:10:20,739 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:10:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2019-11-24 05:10:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:10:20,768 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:20,769 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:20,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1360995853, now seen corresponding path program 1 times [2019-11-24 05:10:20,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:20,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687504172] [2019-11-24 05:10:20,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:22,205 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 05:10:22,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687504172] [2019-11-24 05:10:22,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:22,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:10:22,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068409226] [2019-11-24 05:10:22,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:10:22,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:22,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:10:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:10:22,224 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2019-11-24 05:10:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:22,249 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2019-11-24 05:10:22,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:10:22,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:10:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:22,261 INFO L225 Difference]: With dead ends: 88 [2019-11-24 05:10:22,262 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:10:22,265 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 05:10:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:10:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-24 05:10:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-24 05:10:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-11-24 05:10:22,308 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 7 [2019-11-24 05:10:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:22,308 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-11-24 05:10:22,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:10:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-11-24 05:10:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:10:22,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:22,310 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:22,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1954565577, now seen corresponding path program 1 times [2019-11-24 05:10:22,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:22,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820590197] [2019-11-24 05:10:22,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:22,433 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 05:10:22,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820590197] [2019-11-24 05:10:22,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:22,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:10:22,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390702690] [2019-11-24 05:10:22,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:10:22,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:22,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:10:22,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:10:22,437 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 3 states. [2019-11-24 05:10:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:22,454 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2019-11-24 05:10:22,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:10:22,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:10:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:22,456 INFO L225 Difference]: With dead ends: 82 [2019-11-24 05:10:22,456 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 05:10:22,457 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 05:10:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 05:10:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-24 05:10:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:10:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2019-11-24 05:10:22,467 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 8 [2019-11-24 05:10:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:22,467 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2019-11-24 05:10:22,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:10:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2019-11-24 05:10:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:10:22,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:22,468 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:22,469 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1062533194, now seen corresponding path program 1 times [2019-11-24 05:10:22,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:22,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013868258] [2019-11-24 05:10:22,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:10:22,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013868258] [2019-11-24 05:10:22,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:22,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:10:22,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948234904] [2019-11-24 05:10:22,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:10:22,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:10:22,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:10:22,673 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 5 states. [2019-11-24 05:10:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:22,921 INFO L93 Difference]: Finished difference Result 121 states and 166 transitions. [2019-11-24 05:10:22,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:10:22,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-24 05:10:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:22,924 INFO L225 Difference]: With dead ends: 121 [2019-11-24 05:10:22,924 INFO L226 Difference]: Without dead ends: 100 [2019-11-24 05:10:22,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:10:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-24 05:10:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2019-11-24 05:10:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-24 05:10:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2019-11-24 05:10:22,937 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 12 [2019-11-24 05:10:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:22,937 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2019-11-24 05:10:22,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:10:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2019-11-24 05:10:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:10:22,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:22,938 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:22,939 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1062384133, now seen corresponding path program 1 times [2019-11-24 05:10:22,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:22,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598920282] [2019-11-24 05:10:22,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:23,165 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 05:10:23,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598920282] [2019-11-24 05:10:23,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035505793] [2019-11-24 05:10:23,166 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 05:10:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:23,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:10:23,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:10:23,723 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 05:10:23,723 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:10:23,760 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 05:10:23,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1442542434] [2019-11-24 05:10:23,795 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 05:10:23,796 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:10:23,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:10:23,809 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:10:23,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:11:25,658 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 05:11:30,388 WARN L192 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 329 DAG size of output: 267 [2019-11-24 05:11:30,813 WARN L192 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 745 [2019-11-24 05:11:31,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8