/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_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:03:05,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:03:05,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:03:05,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:03:05,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:03:05,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:03:05,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:03:05,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:03:05,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:03:05,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:03:05,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:03:05,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:03:05,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:03:05,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:03:05,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:03:05,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:03:05,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:03:05,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:03:05,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:03:05,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:03:05,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:03:05,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:03:05,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:03:05,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:03:05,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:03:05,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:03:05,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:03:05,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:03:05,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:03:05,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:03:05,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:03:05,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:03:05,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:03:05,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:03:05,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:03:05,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:03:05,854 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 05:03:05,878 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:03:05,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:03:05,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:03:05,879 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:03:05,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:03:05,880 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:03:05,880 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:03:05,881 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:03:05,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:03:05,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:03:05,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:03:05,882 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:03:05,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:03:05,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:03:05,882 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:03:05,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:03:05,883 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:03:05,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:03:05,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:03:05,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:03:05,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:03:05,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:03:05,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:03:05,885 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:03:05,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:03:05,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:03:05,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:03:05,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:03:05,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:03:05,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:03:05,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:03:05,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:03:05,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:03:05,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:03:05,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:03:05,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:03:05,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:03:05,888 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:03:06,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:03:06,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:03:06,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:03:06,229 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:03:06,229 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:03:06,230 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-11-24 05:03:06,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e020939c/6bc49b103adc471b8a60926d7c8bb192/FLAGbce25a938 [2019-11-24 05:03:06,962 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:03:06,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-11-24 05:03:06,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e020939c/6bc49b103adc471b8a60926d7c8bb192/FLAGbce25a938 [2019-11-24 05:03:07,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e020939c/6bc49b103adc471b8a60926d7c8bb192 [2019-11-24 05:03:07,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:03:07,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:03:07,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:07,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:03:07,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:03:07,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:07" (1/1) ... [2019-11-24 05:03:07,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22286c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:07, skipping insertion in model container [2019-11-24 05:03:07,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:07" (1/1) ... [2019-11-24 05:03:07,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:03:07,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:03:07,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:07,996 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:03:08,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:08,221 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:03:08,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08 WrapperNode [2019-11-24 05:03:08,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:08,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:08,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:03:08,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:03:08,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:08,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:03:08,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:03:08,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:03:08,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... [2019-11-24 05:03:08,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:03:08,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:03:08,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:03:08,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:03:08,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:03:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:03:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:03:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:03:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:03:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:03:20,175 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:03:20,175 INFO L284 CfgBuilder]: Removed 513 assume(true) statements. [2019-11-24 05:03:20,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:20 BoogieIcfgContainer [2019-11-24 05:03:20,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:03:20,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:03:20,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:03:20,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:03:20,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:03:07" (1/3) ... [2019-11-24 05:03:20,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f8b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:20, skipping insertion in model container [2019-11-24 05:03:20,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:08" (2/3) ... [2019-11-24 05:03:20,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f8b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:20, skipping insertion in model container [2019-11-24 05:03:20,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:20" (3/3) ... [2019-11-24 05:03:20,186 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2019-11-24 05:03:20,196 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:03:20,203 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:03:20,215 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:03:20,240 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:03:20,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:03:20,240 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:03:20,240 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:03:20,241 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:03:20,241 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:03:20,241 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:03:20,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:03:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:03:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:03:20,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:20,266 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:20,266 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 05:03:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash -757003661, now seen corresponding path program 1 times [2019-11-24 05:03:20,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:20,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271357530] [2019-11-24 05:03:20,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:20,668 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 05:03:20,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271357530] [2019-11-24 05:03:20,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:20,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:03:20,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014562088] [2019-11-24 05:03:20,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:03:20,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:20,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:03:20,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:03:20,694 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:03:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:20,721 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:03:20,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:03:20,723 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:03:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:20,735 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:03:20,735 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:03:20,740 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 05:03:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:03:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:03:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:03:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:03:20,801 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:03:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:20,802 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:03:20,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:03:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:03:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:03:20,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:20,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:20,804 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 05:03:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1195310183, now seen corresponding path program 1 times [2019-11-24 05:03:20,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:20,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318725864] [2019-11-24 05:03:20,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:20,950 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 05:03:20,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318725864] [2019-11-24 05:03:20,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:20,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:20,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039329745] [2019-11-24 05:03:20,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:20,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:20,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:20,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:20,953 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:03:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:20,976 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:03:20,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:20,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:03:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:20,978 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:03:20,979 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:03:20,980 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 05:03:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:03:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:03:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:03:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:03:20,989 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:03:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:20,989 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:03:20,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:03:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:03:20,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:20,991 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:20,991 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 05:03:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:20,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1154773974, now seen corresponding path program 1 times [2019-11-24 05:03:20,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:20,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221770051] [2019-11-24 05:03:20,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:03:21,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221770051] [2019-11-24 05:03:21,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:21,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:03:21,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596746967] [2019-11-24 05:03:21,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:03:21,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:03:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:03:21,202 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 7 states. [2019-11-24 05:03:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:21,781 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2019-11-24 05:03:21,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-24 05:03:21,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-24 05:03:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:21,783 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:03:21,783 INFO L226 Difference]: Without dead ends: 62 [2019-11-24 05:03:21,784 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:03:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-24 05:03:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2019-11-24 05:03:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:03:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2019-11-24 05:03:21,794 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 13 [2019-11-24 05:03:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:21,795 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2019-11-24 05:03:21,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:03:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2019-11-24 05:03:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 05:03:21,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:21,798 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:21,801 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:21,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1125155786, now seen corresponding path program 1 times [2019-11-24 05:03:21,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:21,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977976567] [2019-11-24 05:03:21,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:22,219 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 05:03:22,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977976567] [2019-11-24 05:03:22,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693085115] [2019-11-24 05:03:22,220 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 05:03:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:22,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:03:22,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:03:22,630 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 05:03:22,630 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:03:22,669 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 05:03:22,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430612694] [2019-11-24 05:03:22,712 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-11-24 05:03:22,713 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:03:22,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:03:22,727 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:03:22,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:04:05,589 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 688 [2019-11-24 05:04:09,668 WARN L192 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 291 DAG size of output: 237 [2019-11-24 05:04:10,011 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 724 [2019-11-24 05:04:10,313 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8