/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:07:52,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:07:52,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:07:52,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:07:52,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:07:52,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:07:52,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:07:52,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:07:52,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:07:52,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:07:52,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:07:52,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:07:52,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:07:52,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:07:52,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:07:52,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:07:52,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:07:52,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:07:52,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:07:52,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:07:52,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:07:52,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:07:52,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:07:52,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:07:52,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:07:52,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:07:52,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:07:52,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:07:52,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:07:52,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:07:52,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:07:52,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:07:52,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:07:52,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:07:52,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:07:52,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:07:52,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:07:52,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:07:52,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:07:52,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:07:52,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:07:52,441 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 05:07:52,457 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:07:52,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:07:52,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:07:52,458 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:07:52,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:07:52,459 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:07:52,460 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:07:52,460 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:07:52,460 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:07:52,460 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:07:52,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:07:52,461 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:07:52,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:07:52,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:07:52,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:07:52,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:07:52,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:07:52,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:07:52,463 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:07:52,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:07:52,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:07:52,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:07:52,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:07:52,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:07:52,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:07:52,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:07:52,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:07:52,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:07:52,465 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:07:52,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:07:52,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:07:52,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:07:52,466 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:07:52,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:07:52,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:07:52,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:07:52,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:07:52,779 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:07:52,780 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product32.cil.c [2019-11-24 05:07:52,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0290ab7d5/8bc76665fe4b46ec8b15450d3adc2b7c/FLAG1f432a9e4 [2019-11-24 05:07:53,517 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:07:53,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product32.cil.c [2019-11-24 05:07:53,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0290ab7d5/8bc76665fe4b46ec8b15450d3adc2b7c/FLAG1f432a9e4 [2019-11-24 05:07:53,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0290ab7d5/8bc76665fe4b46ec8b15450d3adc2b7c [2019-11-24 05:07:53,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:07:53,753 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:07:53,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:07:53,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:07:53,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:07:53,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:07:53" (1/1) ... [2019-11-24 05:07:53,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba95367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:53, skipping insertion in model container [2019-11-24 05:07:53,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:07:53" (1/1) ... [2019-11-24 05:07:53,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:07:53,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:07:54,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:07:54,631 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:07:54,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:07:54,818 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:07:54,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54 WrapperNode [2019-11-24 05:07:54,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:07:54,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:07:54,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:07:54,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:07:54,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:54,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:07:55,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:07:55,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:07:55,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:07:55,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (1/1) ... [2019-11-24 05:07:55,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:07:55,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:07:55,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:07:55,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:07:55,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (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 05:07:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:07:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:07:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:07:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:07:55,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:08:13,466 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:08:13,467 INFO L284 CfgBuilder]: Removed 717 assume(true) statements. [2019-11-24 05:08:13,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:08:13 BoogieIcfgContainer [2019-11-24 05:08:13,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:08:13,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:08:13,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:08:13,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:08:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:07:53" (1/3) ... [2019-11-24 05:08:13,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49520e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:08:13, skipping insertion in model container [2019-11-24 05:08:13,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:54" (2/3) ... [2019-11-24 05:08:13,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49520e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:08:13, skipping insertion in model container [2019-11-24 05:08:13,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:08:13" (3/3) ... [2019-11-24 05:08:13,488 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product32.cil.c [2019-11-24 05:08:13,502 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:08:13,517 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:08:13,536 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:08:13,577 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:08:13,578 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:08:13,578 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:08:13,578 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:08:13,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:08:13,579 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:08:13,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:08:13,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:08:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:08:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:08:13,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:08:13,627 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:08:13,628 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 05:08:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:08:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1249542116, now seen corresponding path program 1 times [2019-11-24 05:08:13,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:08:13,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369951007] [2019-11-24 05:08:13,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:08:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:08:14,230 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 05:08:14,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369951007] [2019-11-24 05:08:14,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:08:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:08:14,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991906818] [2019-11-24 05:08:14,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:08:14,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:08:14,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:08:14,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:08:14,269 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:08:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:08:14,307 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:08:14,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:08:14,310 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:08:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:08:14,327 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:08:14,327 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:08:14,331 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 05:08:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:08:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:08:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:08:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:08:14,392 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:08:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:08:14,393 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:08:14,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:08:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:08:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:08:14,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:08:14,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:08:14,395 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 05:08:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:08:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1632105753, now seen corresponding path program 1 times [2019-11-24 05:08:14,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:08:14,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097835226] [2019-11-24 05:08:14,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:08:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:08:14,531 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 05:08:14,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097835226] [2019-11-24 05:08:14,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:08:14,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:08:14,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263781779] [2019-11-24 05:08:14,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:08:14,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:08:14,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:08:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:08:14,536 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:08:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:08:14,558 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:08:14,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:08:14,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:08:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:08:14,560 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:08:14,561 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:08:14,562 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 05:08:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:08:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:08:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:08:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:08:14,572 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:08:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:08:14,573 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:08:14,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:08:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:08:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:08:14,574 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:08:14,574 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:08:14,575 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 05:08:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:08:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 759584402, now seen corresponding path program 1 times [2019-11-24 05:08:14,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:08:14,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875128598] [2019-11-24 05:08:14,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:08:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:08:14,921 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 05:08:14,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875128598] [2019-11-24 05:08:14,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350700801] [2019-11-24 05:08:14,923 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 05:08:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:08:15,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:08:15,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:08:15,483 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 05:08:15,484 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:08:15,504 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 05:08:15,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500881206] [2019-11-24 05:08:15,533 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 05:08:15,534 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:08:15,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:08:15,550 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:08:15,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs