/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_spec8_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:12:51,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:12:51,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:12:51,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:12:51,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:12:51,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:12:51,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:12:51,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:12:51,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:12:51,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:12:51,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:12:51,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:12:51,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:12:51,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:12:51,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:12:51,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:12:51,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:12:51,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:12:51,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:12:51,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:12:51,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:12:51,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:12:51,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:12:51,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:12:51,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:12:51,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:12:51,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:12:51,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:12:51,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:12:51,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:12:51,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:12:51,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:12:51,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:12:51,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:12:51,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:12:51,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:12:51,808 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 05:12:51,839 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:12:51,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:12:51,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:12:51,844 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:12:51,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:12:51,844 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:12:51,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:12:51,844 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:12:51,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:12:51,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:12:51,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:12:51,845 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:12:51,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:12:51,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:12:51,847 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:12:51,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:12:51,848 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:12:51,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:12:51,850 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:12:51,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:12:51,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:12:51,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:12:51,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:12:51,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:12:51,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:12:51,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:12:51,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:12:51,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:12:51,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:12:51,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:12:51,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:12:51,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:12:51,854 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:12:52,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:12:52,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:12:52,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:12:52,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:12:52,137 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:12:52,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product32.cil.c [2019-11-24 05:12:52,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5001d9ced/9b0d174227d94f45b24daa489d866103/FLAG94642012c [2019-11-24 05:12:52,827 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:12:52,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product32.cil.c [2019-11-24 05:12:52,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5001d9ced/9b0d174227d94f45b24daa489d866103/FLAG94642012c [2019-11-24 05:12:53,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5001d9ced/9b0d174227d94f45b24daa489d866103 [2019-11-24 05:12:53,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:12:53,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:12:53,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:12:53,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:12:53,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:12:53,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:12:53" (1/1) ... [2019-11-24 05:12:53,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4e8f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:53, skipping insertion in model container [2019-11-24 05:12:53,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:12:53" (1/1) ... [2019-11-24 05:12:53,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:12:53,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:12:53,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:12:53,890 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:12:54,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:12:54,175 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:12:54,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54 WrapperNode [2019-11-24 05:12:54,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:12:54,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:12:54,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:12:54,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:12:54,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:12:54,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:12:54,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:12:54,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:12:54,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (1/1) ... [2019-11-24 05:12:54,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:12:54,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:12:54,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:12:54,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:12:54,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (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 05:12:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:12:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:12:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:12:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:12:54,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:13:10,286 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:13:10,287 INFO L284 CfgBuilder]: Removed 693 assume(true) statements. [2019-11-24 05:13:10,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:13:10 BoogieIcfgContainer [2019-11-24 05:13:10,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:13:10,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:13:10,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:13:10,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:13:10,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:12:53" (1/3) ... [2019-11-24 05:13:10,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d71baab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:13:10, skipping insertion in model container [2019-11-24 05:13:10,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:12:54" (2/3) ... [2019-11-24 05:13:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d71baab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:13:10, skipping insertion in model container [2019-11-24 05:13:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:13:10" (3/3) ... [2019-11-24 05:13:10,322 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product32.cil.c [2019-11-24 05:13:10,337 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:13:10,349 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:13:10,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:13:10,405 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:13:10,405 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:13:10,405 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:13:10,406 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:13:10,406 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:13:10,406 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:13:10,406 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:13:10,406 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:13:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:13:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:13:10,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:10,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:10,441 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 05:13:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -322756477, now seen corresponding path program 1 times [2019-11-24 05:13:10,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:10,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472533723] [2019-11-24 05:13:10,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:10,948 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 05:13:10,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472533723] [2019-11-24 05:13:10,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:10,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:13:10,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913239242] [2019-11-24 05:13:10,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:13:10,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:13:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:13:10,987 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:13:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:11,026 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:13:11,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:13:11,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:13:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:11,045 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:13:11,046 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:13:11,050 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 05:13:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:13:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:13:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:13:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:13:11,112 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:13:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:11,113 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:13:11,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:13:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:13:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:13:11,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:11,115 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:11,115 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 05:13:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:11,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1042998704, now seen corresponding path program 1 times [2019-11-24 05:13:11,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:11,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057443200] [2019-11-24 05:13:11,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:11,303 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 05:13:11,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057443200] [2019-11-24 05:13:11,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:11,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:13:11,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806071264] [2019-11-24 05:13:11,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:13:11,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:13:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:11,307 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:13:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:11,328 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:13:11,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:13:11,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:13:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:11,331 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:13:11,331 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:13:11,333 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 05:13:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:13:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:13:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:13:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:13:11,344 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:13:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:11,344 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:13:11,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:13:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:13:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:13:11,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:11,346 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:11,347 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 05:13:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:11,347 INFO L82 PathProgramCache]: Analyzing trace with hash -263872973, now seen corresponding path program 1 times [2019-11-24 05:13:11,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:11,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601776391] [2019-11-24 05:13:11,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:11,545 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 05:13:11,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601776391] [2019-11-24 05:13:11,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:11,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:13:11,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355935813] [2019-11-24 05:13:11,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:13:11,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:11,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:13:11,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:11,551 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 05:13:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:11,731 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2019-11-24 05:13:11,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:13:11,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 05:13:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:11,733 INFO L225 Difference]: With dead ends: 86 [2019-11-24 05:13:11,735 INFO L226 Difference]: Without dead ends: 57 [2019-11-24 05:13:11,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:13:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-24 05:13:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-11-24 05:13:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:13:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 05:13:11,747 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 05:13:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:11,749 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 05:13:11,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:13:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 05:13:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:13:11,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:11,750 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:11,751 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 05:13:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash 116457623, now seen corresponding path program 1 times [2019-11-24 05:13:11,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:11,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583403378] [2019-11-24 05:13:11,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:13:12,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583403378] [2019-11-24 05:13:12,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:12,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 05:13:12,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976587372] [2019-11-24 05:13:12,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 05:13:12,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:12,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 05:13:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:13:12,250 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 8 states. [2019-11-24 05:13:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:13,246 INFO L93 Difference]: Finished difference Result 132 states and 206 transitions. [2019-11-24 05:13:13,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:13:13,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-24 05:13:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:13,249 INFO L225 Difference]: With dead ends: 132 [2019-11-24 05:13:13,249 INFO L226 Difference]: Without dead ends: 112 [2019-11-24 05:13:13,250 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:13:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-24 05:13:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2019-11-24 05:13:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-24 05:13:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 180 transitions. [2019-11-24 05:13:13,267 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 180 transitions. Word has length 15 [2019-11-24 05:13:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:13,267 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 180 transitions. [2019-11-24 05:13:13,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 05:13:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 180 transitions. [2019-11-24 05:13:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:13:13,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:13,269 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:13,269 INFO L410 AbstractCegarLoop]: === Iteration 5 === [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 05:13:13,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash -610109071, now seen corresponding path program 1 times [2019-11-24 05:13:13,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:13,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576015692] [2019-11-24 05:13:13,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:13:13,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576015692] [2019-11-24 05:13:13,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:13,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:13:13,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953933249] [2019-11-24 05:13:13,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:13:13,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:13:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:13:13,339 INFO L87 Difference]: Start difference. First operand 108 states and 180 transitions. Second operand 3 states. [2019-11-24 05:13:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:13,366 INFO L93 Difference]: Finished difference Result 313 states and 526 transitions. [2019-11-24 05:13:13,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:13:13,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:13:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:13,369 INFO L225 Difference]: With dead ends: 313 [2019-11-24 05:13:13,369 INFO L226 Difference]: Without dead ends: 209 [2019-11-24 05:13:13,371 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 05:13:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-24 05:13:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 177. [2019-11-24 05:13:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-11-24 05:13:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 312 transitions. [2019-11-24 05:13:13,416 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 312 transitions. Word has length 16 [2019-11-24 05:13:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:13,416 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 312 transitions. [2019-11-24 05:13:13,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:13:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 312 transitions. [2019-11-24 05:13:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:13:13,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:13,420 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:13:13,420 INFO L410 AbstractCegarLoop]: === Iteration 6 === [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 05:13:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1488328160, now seen corresponding path program 1 times [2019-11-24 05:13:13,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:13,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523527171] [2019-11-24 05:13:13,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:13,726 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 05:13:13,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523527171] [2019-11-24 05:13:13,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:13:13,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:13:13,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715198934] [2019-11-24 05:13:13,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:13:13,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:13:13,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:13:13,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:13:13,730 INFO L87 Difference]: Start difference. First operand 177 states and 312 transitions. Second operand 7 states. [2019-11-24 05:13:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:13:14,677 INFO L93 Difference]: Finished difference Result 260 states and 443 transitions. [2019-11-24 05:13:14,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:13:14,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-24 05:13:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:13:14,679 INFO L225 Difference]: With dead ends: 260 [2019-11-24 05:13:14,679 INFO L226 Difference]: Without dead ends: 239 [2019-11-24 05:13:14,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2019-11-24 05:13:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-11-24 05:13:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 237. [2019-11-24 05:13:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-11-24 05:13:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 417 transitions. [2019-11-24 05:13:14,702 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 417 transitions. Word has length 17 [2019-11-24 05:13:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:13:14,702 INFO L462 AbstractCegarLoop]: Abstraction has 237 states and 417 transitions. [2019-11-24 05:13:14,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:13:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 417 transitions. [2019-11-24 05:13:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 05:13:14,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:13:14,704 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 05:13:14,705 INFO L410 AbstractCegarLoop]: === Iteration 7 === [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 05:13:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:13:14,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1760030569, now seen corresponding path program 1 times [2019-11-24 05:13:14,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:13:14,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804377336] [2019-11-24 05:13:14,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:13:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:15,161 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 05:13:15,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804377336] [2019-11-24 05:13:15,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562466593] [2019-11-24 05:13:15,162 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 05:13:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:13:16,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:13:16,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:13:16,612 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 05:13:16,612 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:13:16,649 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 05:13:16,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1119021680] [2019-11-24 05:13:16,676 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-11-24 05:13:16,677 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:13:16,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:13:16,690 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:13:16,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs