/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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:03:16,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:03:16,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:03:16,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:03:16,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:03:16,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:03:16,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:03:16,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:03:16,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:03:16,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:03:16,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:03:16,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:03:16,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:03:16,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:03:16,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:03:16,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:03:16,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:03:16,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:03:16,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:03:16,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:03:16,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:03:16,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:03:16,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:03:16,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:03:16,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:03:16,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:03:16,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:03:16,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:03:16,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:03:16,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:03:16,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:03:16,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:03:16,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:03:16,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:03:16,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:03:16,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:03:16,071 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 05:03:16,100 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:03:16,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:03:16,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:03:16,102 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:03:16,102 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:03:16,103 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:03:16,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:03:16,103 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:03:16,103 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:03:16,103 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:03:16,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:03:16,105 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:03:16,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:03:16,106 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:03:16,106 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:03:16,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:03:16,107 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:03:16,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:03:16,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:03:16,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:03:16,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:03:16,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:03:16,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:03:16,109 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:03:16,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:03:16,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:03:16,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:03:16,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:03:16,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:03:16,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:03:16,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:03:16,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:03:16,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:03:16,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:03:16,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:03:16,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:03:16,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:03:16,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:03:16,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:03:16,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:03:16,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:03:16,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:03:16,408 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:03:16,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-24 05:03:16,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1a6fba9/3a4cc2f1abc1427faf9350783e4aefcb/FLAG8b92e1b25 [2019-11-24 05:03:17,129 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:03:17,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-24 05:03:17,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1a6fba9/3a4cc2f1abc1427faf9350783e4aefcb/FLAG8b92e1b25 [2019-11-24 05:03:17,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1a6fba9/3a4cc2f1abc1427faf9350783e4aefcb [2019-11-24 05:03:17,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:03:17,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:03:17,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:17,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:03:17,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:03:17,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:17" (1/1) ... [2019-11-24 05:03:17,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af05bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:17, skipping insertion in model container [2019-11-24 05:03:17,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:17" (1/1) ... [2019-11-24 05:03:17,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:03:17,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:03:18,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:18,227 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:03:18,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:18,405 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:03:18,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18 WrapperNode [2019-11-24 05:03:18,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:18,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:18,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:03:18,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:03:18,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:18,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:03:18,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:03:18,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:03:18,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (1/1) ... [2019-11-24 05:03:18,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:03:18,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:03:18,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:03:18,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:03:18,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (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 05:03:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:03:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:03:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:03:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:03:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:03:33,718 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:03:33,718 INFO L284 CfgBuilder]: Removed 621 assume(true) statements. [2019-11-24 05:03:33,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:33 BoogieIcfgContainer [2019-11-24 05:03:33,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:03:33,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:03:33,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:03:33,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:03:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:03:17" (1/3) ... [2019-11-24 05:03:33,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d04434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:33, skipping insertion in model container [2019-11-24 05:03:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:18" (2/3) ... [2019-11-24 05:03:33,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d04434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:33, skipping insertion in model container [2019-11-24 05:03:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:33" (3/3) ... [2019-11-24 05:03:33,728 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product25.cil.c [2019-11-24 05:03:33,737 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:03:33,745 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:03:33,755 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:03:33,777 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:03:33,778 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:03:33,778 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:03:33,778 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:03:33,778 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:03:33,778 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:03:33,779 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:03:33,779 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:03:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:03:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:03:33,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:33,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:33,804 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 05:03:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash 14769057, now seen corresponding path program 1 times [2019-11-24 05:03:33,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:33,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291476949] [2019-11-24 05:03:33,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:34,196 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 05:03:34,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291476949] [2019-11-24 05:03:34,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:34,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:03:34,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931006141] [2019-11-24 05:03:34,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:03:34,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:34,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:03:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:03:34,222 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:03:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:34,249 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:03:34,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:03:34,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:03:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:34,267 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:03:34,267 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:03:34,273 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 05:03:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:03:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:03:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:03:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:03:34,344 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:03:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:34,345 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:03:34,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:03:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:03:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:03:34,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:34,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:34,348 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 05:03:34,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:34,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1403324495, now seen corresponding path program 1 times [2019-11-24 05:03:34,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:34,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487892456] [2019-11-24 05:03:34,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:34,500 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 05:03:34,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487892456] [2019-11-24 05:03:34,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:34,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:34,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029656199] [2019-11-24 05:03:34,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:34,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:34,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:34,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:34,503 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:03:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:34,520 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:03:34,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:34,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:03:34,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:34,522 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:03:34,522 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:03:34,523 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 05:03:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:03:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:03:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:03:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:03:34,532 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:03:34,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:34,533 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:03:34,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:03:34,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:03:34,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:34,534 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:34,534 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 05:03:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:34,535 INFO L82 PathProgramCache]: Analyzing trace with hash -491640047, now seen corresponding path program 1 times [2019-11-24 05:03:34,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:34,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070637598] [2019-11-24 05:03:34,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:34,740 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 05:03:34,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070637598] [2019-11-24 05:03:34,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:34,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:03:34,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139583210] [2019-11-24 05:03:34,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:03:34,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:34,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:03:34,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:03:34,743 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 05:03:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:34,978 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 05:03:34,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:03:34,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:03:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:34,982 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:03:34,982 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 05:03:34,982 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 05:03:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 05:03:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 05:03:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 05:03:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 05:03:35,010 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 05:03:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:35,011 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 05:03:35,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:03:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 05:03:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:03:35,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:35,012 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:35,012 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 05:03:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:35,013 INFO L82 PathProgramCache]: Analyzing trace with hash -496836264, now seen corresponding path program 1 times [2019-11-24 05:03:35,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:35,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227435185] [2019-11-24 05:03:35,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:35,204 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 05:03:35,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227435185] [2019-11-24 05:03:35,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:35,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:03:35,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226092647] [2019-11-24 05:03:35,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:03:35,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:03:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:03:35,207 INFO L87 Difference]: Start difference. First operand 87 states and 137 transitions. Second operand 6 states. [2019-11-24 05:03:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:36,042 INFO L93 Difference]: Finished difference Result 176 states and 277 transitions. [2019-11-24 05:03:36,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:03:36,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-24 05:03:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:36,045 INFO L225 Difference]: With dead ends: 176 [2019-11-24 05:03:36,045 INFO L226 Difference]: Without dead ends: 170 [2019-11-24 05:03:36,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:03:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-24 05:03:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 146. [2019-11-24 05:03:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-24 05:03:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 246 transitions. [2019-11-24 05:03:36,063 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 246 transitions. Word has length 13 [2019-11-24 05:03:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:36,063 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 246 transitions. [2019-11-24 05:03:36,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:03:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 246 transitions. [2019-11-24 05:03:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:03:36,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:36,065 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:36,065 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 05:03:36,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash -383458460, now seen corresponding path program 1 times [2019-11-24 05:03:36,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:36,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148262642] [2019-11-24 05:03:36,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:36,134 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 05:03:36,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148262642] [2019-11-24 05:03:36,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:36,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:36,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474754334] [2019-11-24 05:03:36,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:36,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:36,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:36,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:36,136 INFO L87 Difference]: Start difference. First operand 146 states and 246 transitions. Second operand 3 states. [2019-11-24 05:03:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:36,170 INFO L93 Difference]: Finished difference Result 426 states and 722 transitions. [2019-11-24 05:03:36,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:36,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 05:03:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:36,173 INFO L225 Difference]: With dead ends: 426 [2019-11-24 05:03:36,173 INFO L226 Difference]: Without dead ends: 284 [2019-11-24 05:03:36,176 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 05:03:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-11-24 05:03:36,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 238. [2019-11-24 05:03:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-24 05:03:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 422 transitions. [2019-11-24 05:03:36,211 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 422 transitions. Word has length 15 [2019-11-24 05:03:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:36,212 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 422 transitions. [2019-11-24 05:03:36,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 422 transitions. [2019-11-24 05:03:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:03:36,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:36,213 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:36,213 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 05:03:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1118175007, now seen corresponding path program 1 times [2019-11-24 05:03:36,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:36,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045829624] [2019-11-24 05:03:36,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:36,347 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 05:03:36,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045829624] [2019-11-24 05:03:36,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:36,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:36,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936585264] [2019-11-24 05:03:36,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:36,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:36,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:36,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:36,350 INFO L87 Difference]: Start difference. First operand 238 states and 422 transitions. Second operand 3 states. [2019-11-24 05:03:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:36,383 INFO L93 Difference]: Finished difference Result 698 states and 1242 transitions. [2019-11-24 05:03:36,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:36,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:03:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:36,386 INFO L225 Difference]: With dead ends: 698 [2019-11-24 05:03:36,387 INFO L226 Difference]: Without dead ends: 464 [2019-11-24 05:03:36,388 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 05:03:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-11-24 05:03:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 418. [2019-11-24 05:03:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-11-24 05:03:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 762 transitions. [2019-11-24 05:03:36,424 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 762 transitions. Word has length 16 [2019-11-24 05:03:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:36,424 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 762 transitions. [2019-11-24 05:03:36,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 762 transitions. [2019-11-24 05:03:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:03:36,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:36,433 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:36,433 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 05:03:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 423974646, now seen corresponding path program 1 times [2019-11-24 05:03:36,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:36,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380925512] [2019-11-24 05:03:36,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:36,760 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 05:03:36,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380925512] [2019-11-24 05:03:36,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367609945] [2019-11-24 05:03:36,761 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 05:03:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:37,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:03:37,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:03:37,143 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 05:03:37,143 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:03:37,175 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 05:03:37,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297953996] [2019-11-24 05:03:37,224 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 05:03:37,224 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:03:37,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:03:37,241 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:03:37,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:04:27,569 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 687 [2019-11-24 05:04:31,353 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 306 DAG size of output: 249 [2019-11-24 05:04:31,816 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-11-24 05:04:34,760 WARN L192 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 1373