/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:09:58,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:09:58,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:09:58,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:09:58,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:09:58,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:09:58,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:09:58,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:09:58,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:09:58,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:09:58,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:09:58,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:09:58,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:09:58,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:09:58,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:09:58,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:09:58,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:09:58,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:09:58,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:09:58,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:09:58,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:09:58,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:09:58,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:09:58,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:09:58,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:09:58,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:09:58,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:09:58,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:09:58,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:09:58,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:09:58,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:09:58,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:09:58,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:09:58,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:09:58,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:09:58,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:09:58,493 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 05:09:58,508 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:09:58,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:09:58,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:09:58,509 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:09:58,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:09:58,509 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:09:58,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:09:58,510 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:09:58,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:09:58,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:09:58,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:09:58,510 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:09:58,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:09:58,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:09:58,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:09:58,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:09:58,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:09:58,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:09:58,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:09:58,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:09:58,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:09:58,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:09:58,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:09:58,513 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:09:58,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:09:58,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:09:58,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:09:58,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:09:58,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:09:58,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:09:58,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:09:58,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:09:58,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:09:58,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:09:58,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:09:58,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:09:58,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:09:58,516 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:09:58,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:09:58,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:09:58,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:09:58,930 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:09:58,930 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:09:58,931 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product35.cil.c [2019-11-24 05:09:58,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59b1e5eb/7ff5fea529034fe7901c703c709d91ab/FLAG982268cea [2019-11-24 05:09:59,653 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:09:59,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product35.cil.c [2019-11-24 05:09:59,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59b1e5eb/7ff5fea529034fe7901c703c709d91ab/FLAG982268cea [2019-11-24 05:09:59,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59b1e5eb/7ff5fea529034fe7901c703c709d91ab [2019-11-24 05:09:59,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:09:59,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:09:59,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:59,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:09:59,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:09:59,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:59" (1/1) ... [2019-11-24 05:09:59,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa637bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:59, skipping insertion in model container [2019-11-24 05:09:59,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:59" (1/1) ... [2019-11-24 05:09:59,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:09:59,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:10:00,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:10:00,674 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:10:00,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:10:00,963 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:10:00,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00 WrapperNode [2019-11-24 05:10:00,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:10:00,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:10:00,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:10:00,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:10:00,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:10:01,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:10:01,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:10:01,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:10:01,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (1/1) ... [2019-11-24 05:10:01,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:10:01,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:10:01,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:10:01,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:10:01,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (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 05:10:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:10:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:10:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:10:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:10:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:10:25,993 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:10:25,993 INFO L284 CfgBuilder]: Removed 937 assume(true) statements. [2019-11-24 05:10:25,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:25 BoogieIcfgContainer [2019-11-24 05:10:25,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:10:25,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:10:25,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:10:26,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:10:26,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:09:59" (1/3) ... [2019-11-24 05:10:26,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1175a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:26, skipping insertion in model container [2019-11-24 05:10:26,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:10:00" (2/3) ... [2019-11-24 05:10:26,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1175a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:26, skipping insertion in model container [2019-11-24 05:10:26,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:25" (3/3) ... [2019-11-24 05:10:26,005 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product35.cil.c [2019-11-24 05:10:26,016 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:10:26,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:10:26,033 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:10:26,059 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:10:26,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:10:26,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:10:26,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:10:26,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:10:26,060 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:10:26,060 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:10:26,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:10:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2019-11-24 05:10:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:10:26,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:26,090 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:26,090 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 05:10:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1541657284, now seen corresponding path program 1 times [2019-11-24 05:10:26,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:26,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675650] [2019-11-24 05:10:26,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:26,511 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 05:10:26,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675650] [2019-11-24 05:10:26,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:26,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:10:26,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699779936] [2019-11-24 05:10:26,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:10:26,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:26,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:10:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:10:26,536 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2019-11-24 05:10:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:26,559 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2019-11-24 05:10:26,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:10:26,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:10:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:26,573 INFO L225 Difference]: With dead ends: 88 [2019-11-24 05:10:26,574 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:10:26,577 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 05:10:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:10:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-24 05:10:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-24 05:10:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-11-24 05:10:26,621 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 7 [2019-11-24 05:10:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:26,621 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-11-24 05:10:26,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:10:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-11-24 05:10:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:10:26,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:26,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:26,623 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 05:10:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1466996433, now seen corresponding path program 1 times [2019-11-24 05:10:26,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:26,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589363103] [2019-11-24 05:10:26,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:26,799 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 05:10:26,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589363103] [2019-11-24 05:10:26,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:26,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:10:26,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757806599] [2019-11-24 05:10:26,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:10:26,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:26,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:10:26,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:10:26,804 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 3 states. [2019-11-24 05:10:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:26,834 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2019-11-24 05:10:26,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:10:26,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:10:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:26,837 INFO L225 Difference]: With dead ends: 82 [2019-11-24 05:10:26,837 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 05:10:26,840 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 05:10:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 05:10:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-24 05:10:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:10:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2019-11-24 05:10:26,855 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 8 [2019-11-24 05:10:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:26,856 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2019-11-24 05:10:26,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:10:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2019-11-24 05:10:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:10:26,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:26,860 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:26,860 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 05:10:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash -9657884, now seen corresponding path program 1 times [2019-11-24 05:10:26,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:26,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329279725] [2019-11-24 05:10:26,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:27,217 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 05:10:27,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329279725] [2019-11-24 05:10:27,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789123832] [2019-11-24 05:10:27,219 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 05:10:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:27,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:10:27,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:10:27,744 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 05:10:27,745 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:10:27,771 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 05:10:27,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [274326549] [2019-11-24 05:10:27,813 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 05:10:27,813 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:10:27,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:10:27,831 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:10:27,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:11:20,114 WARN L192 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 710 [2019-11-24 05:11:24,853 WARN L192 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 329 DAG size of output: 267 [2019-11-24 05:11:25,283 WARN L192 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 756 [2019-11-24 05:11:25,539 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8