/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_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:59:30,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:59:30,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:59:30,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:59:30,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:59:30,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:59:30,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:59:30,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:59:30,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:59:30,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:59:30,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:59:30,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:59:30,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:59:30,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:59:30,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:59:30,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:59:30,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:59:30,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:59:30,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:59:30,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:59:30,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:59:30,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:59:30,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:59:30,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:59:30,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:59:30,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:59:30,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:59:30,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:59:30,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:59:30,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:59:30,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:59:30,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:59:30,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:59:30,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:59:30,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:59:30,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:59:30,711 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 04:59:30,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:59:30,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:59:30,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:59:30,727 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:59:30,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:59:30,727 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:59:30,727 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:59:30,728 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:59:30,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:59:30,728 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:59:30,728 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:59:30,728 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:59:30,729 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:59:30,729 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:59:30,729 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:59:30,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:59:30,730 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:59:30,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:59:30,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:59:30,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:59:30,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:59:30,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:59:30,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:59:30,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:59:30,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:59:30,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:59:30,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:59:30,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:59:30,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:59:30,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:59:30,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:59:30,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:59:30,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:59:30,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:59:30,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:59:30,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:59:30,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:59:30,734 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:59:31,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:59:31,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:59:31,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:59:31,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:59:31,031 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:59:31,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product17.cil.c [2019-11-24 04:59:31,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4366a9790/f3351aad42c14ad380fe5b47b995417e/FLAG9b0334387 [2019-11-24 04:59:31,766 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:59:31,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product17.cil.c [2019-11-24 04:59:31,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4366a9790/f3351aad42c14ad380fe5b47b995417e/FLAG9b0334387 [2019-11-24 04:59:31,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4366a9790/f3351aad42c14ad380fe5b47b995417e [2019-11-24 04:59:31,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:59:31,970 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:59:31,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:31,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:59:31,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:59:31,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:31" (1/1) ... [2019-11-24 04:59:31,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ecf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:31, skipping insertion in model container [2019-11-24 04:59:31,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:31" (1/1) ... [2019-11-24 04:59:31,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:59:32,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:59:32,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:32,860 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:59:33,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:33,091 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:59:33,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33 WrapperNode [2019-11-24 04:59:33,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:33,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:33,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:59:33,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:59:33,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:33,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:59:33,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:59:33,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:59:33,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:59:33,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:59:33,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:59:33,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:59:33,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (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 04:59:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:59:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:59:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:59:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:59:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:59:44,508 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:59:44,509 INFO L284 CfgBuilder]: Removed 497 assume(true) statements. [2019-11-24 04:59:44,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:59:44 BoogieIcfgContainer [2019-11-24 04:59:44,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:59:44,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:59:44,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:59:44,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:59:44,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:59:31" (1/3) ... [2019-11-24 04:59:44,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f65117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:59:44, skipping insertion in model container [2019-11-24 04:59:44,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (2/3) ... [2019-11-24 04:59:44,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f65117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:59:44, skipping insertion in model container [2019-11-24 04:59:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:59:44" (3/3) ... [2019-11-24 04:59:44,519 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product17.cil.c [2019-11-24 04:59:44,529 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:59:44,536 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-24 04:59:44,548 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-24 04:59:44,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:59:44,574 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:59:44,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:59:44,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:59:44,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:59:44,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:59:44,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:59:44,575 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:59:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2019-11-24 04:59:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:59:44,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:44,601 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:44,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:44,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1413433071, now seen corresponding path program 1 times [2019-11-24 04:59:44,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:44,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316296346] [2019-11-24 04:59:44,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:45,012 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 04:59:45,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316296346] [2019-11-24 04:59:45,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:59:45,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:59:45,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516167884] [2019-11-24 04:59:45,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:59:45,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:59:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:59:45,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:59:45,037 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2019-11-24 04:59:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:59:45,066 INFO L93 Difference]: Finished difference Result 136 states and 201 transitions. [2019-11-24 04:59:45,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:59:45,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:59:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:59:45,084 INFO L225 Difference]: With dead ends: 136 [2019-11-24 04:59:45,084 INFO L226 Difference]: Without dead ends: 77 [2019-11-24 04:59:45,090 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 04:59:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-24 04:59:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-11-24 04:59:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-24 04:59:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 104 transitions. [2019-11-24 04:59:45,134 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 104 transitions. Word has length 8 [2019-11-24 04:59:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:59:45,135 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 104 transitions. [2019-11-24 04:59:45,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:59:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 104 transitions. [2019-11-24 04:59:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:59:45,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:45,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:45,137 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2086087722, now seen corresponding path program 1 times [2019-11-24 04:59:45,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:45,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483807183] [2019-11-24 04:59:45,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:45,263 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 04:59:45,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483807183] [2019-11-24 04:59:45,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:59:45,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:59:45,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904468623] [2019-11-24 04:59:45,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:59:45,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:59:45,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:59:45,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:59:45,267 INFO L87 Difference]: Start difference. First operand 77 states and 104 transitions. Second operand 3 states. [2019-11-24 04:59:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:59:45,295 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2019-11-24 04:59:45,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:59:45,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:59:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:59:45,297 INFO L225 Difference]: With dead ends: 130 [2019-11-24 04:59:45,297 INFO L226 Difference]: Without dead ends: 79 [2019-11-24 04:59:45,299 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 04:59:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-24 04:59:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-24 04:59:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-24 04:59:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2019-11-24 04:59:45,310 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 9 [2019-11-24 04:59:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:59:45,310 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2019-11-24 04:59:45,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:59:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2019-11-24 04:59:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:59:45,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:45,312 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:45,312 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:45,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1149098383, now seen corresponding path program 1 times [2019-11-24 04:59:45,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:45,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606778408] [2019-11-24 04:59:45,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:45,568 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 04:59:45,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606778408] [2019-11-24 04:59:45,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:59:45,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:59:45,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901303819] [2019-11-24 04:59:45,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:59:45,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:59:45,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:59:45,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:59:45,571 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand 5 states. [2019-11-24 04:59:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:59:45,888 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2019-11-24 04:59:45,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:59:45,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 04:59:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:59:45,891 INFO L225 Difference]: With dead ends: 181 [2019-11-24 04:59:45,891 INFO L226 Difference]: Without dead ends: 140 [2019-11-24 04:59:45,892 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 04:59:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-24 04:59:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2019-11-24 04:59:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-24 04:59:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2019-11-24 04:59:45,909 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 13 [2019-11-24 04:59:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:59:45,909 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2019-11-24 04:59:45,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:59:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2019-11-24 04:59:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:59:45,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:45,910 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:45,911 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1157416758, now seen corresponding path program 1 times [2019-11-24 04:59:45,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:45,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950388939] [2019-11-24 04:59:45,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:46,113 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 04:59:46,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950388939] [2019-11-24 04:59:46,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410157215] [2019-11-24 04:59:46,114 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 04:59:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:46,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:59:46,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:59:46,484 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 04:59:46,484 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:59:46,515 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 04:59:46,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751533852] [2019-11-24 04:59:46,572 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:59:46,573 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:59:46,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:59:46,592 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:59:46,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:00:44,358 WARN L192 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:00:49,016 WARN L192 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 326 DAG size of output: 265 [2019-11-24 05:00:49,533 WARN L192 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 757 [2019-11-24 05:00:49,745 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8