/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_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:54:59,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:55:00,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:55:00,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:55:00,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:55:00,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:55:00,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:55:00,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:55:00,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:55:00,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:55:00,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:55:00,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:55:00,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:55:00,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:55:00,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:55:00,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:55:00,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:55:00,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:55:00,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:55:00,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:55:00,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:55:00,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:55:00,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:55:00,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:55:00,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:55:00,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:55:00,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:55:00,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:55:00,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:55:00,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:55:00,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:55:00,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:55:00,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:55:00,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:55:00,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:55:00,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:55:00,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:55:00,081 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:55:00,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:55:00,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:55:00,083 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:55:00,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:55:00,083 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:55:00,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:55:00,084 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:55:00,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:55:00,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:55:00,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:55:00,085 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:55:00,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:55:00,086 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:55:00,086 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:55:00,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:55:00,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:55:00,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:55:00,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:55:00,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:55:00,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:55:00,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:55:00,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:55:00,090 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:55:00,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:55:00,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:55:00,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:55:00,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:55:00,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:55:00,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:55:00,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:55:00,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:55:00,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:55:00,093 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:55:00,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:55:00,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:55:00,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:55:00,094 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:55:00,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:55:00,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:55:00,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:55:00,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:55:00,410 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:55:00,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product32.cil.c [2019-11-24 04:55:00,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f35e0bd/7248f4e2fc4548e6ad27ea78d777ed9e/FLAG48e2b37f9 [2019-11-24 04:55:01,245 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:55:01,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product32.cil.c [2019-11-24 04:55:01,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f35e0bd/7248f4e2fc4548e6ad27ea78d777ed9e/FLAG48e2b37f9 [2019-11-24 04:55:01,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f35e0bd/7248f4e2fc4548e6ad27ea78d777ed9e [2019-11-24 04:55:01,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:55:01,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:55:01,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:55:01,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:55:01,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:55:01,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:55:01" (1/1) ... [2019-11-24 04:55:01,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69802780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:01, skipping insertion in model container [2019-11-24 04:55:01,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:55:01" (1/1) ... [2019-11-24 04:55:01,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:55:01,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:55:02,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:55:02,397 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:55:02,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:55:02,671 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:55:02,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02 WrapperNode [2019-11-24 04:55:02,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:55:02,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:55:02,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:55:02,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:55:02,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:55:02,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:55:02,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:55:02,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:55:02,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... [2019-11-24 04:55:02,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:55:02,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:55:02,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:55:02,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:55:02,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:55:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:55:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:55:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:55:18,054 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:55:18,054 INFO L284 CfgBuilder]: Removed 681 assume(true) statements. [2019-11-24 04:55:18,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:55:18 BoogieIcfgContainer [2019-11-24 04:55:18,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:55:18,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:55:18,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:55:18,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:55:18,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:55:01" (1/3) ... [2019-11-24 04:55:18,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cca5f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:55:18, skipping insertion in model container [2019-11-24 04:55:18,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:55:02" (2/3) ... [2019-11-24 04:55:18,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cca5f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:55:18, skipping insertion in model container [2019-11-24 04:55:18,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:55:18" (3/3) ... [2019-11-24 04:55:18,064 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2019-11-24 04:55:18,073 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:55:18,081 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:55:18,091 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:55:18,116 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:55:18,116 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:55:18,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:55:18,117 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:55:18,117 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:55:18,117 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:55:18,117 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:55:18,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:55:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:55:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:55:18,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:18,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:18,140 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 04:55:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1011828392, now seen corresponding path program 1 times [2019-11-24 04:55:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:18,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110229941] [2019-11-24 04:55:18,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:55:18,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110229941] [2019-11-24 04:55:18,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:18,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:55:18,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694080324] [2019-11-24 04:55:18,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:55:18,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:55:18,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:55:18,610 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:55:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:18,636 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:55:18,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:55:18,638 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:55:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:18,650 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:55:18,650 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:55:18,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:55:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:55:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:55:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:55:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:55:18,695 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:55:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:18,695 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:55:18,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:55:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:55:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:55:18,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:18,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:18,697 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 04:55:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:18,697 INFO L82 PathProgramCache]: Analyzing trace with hash -410371254, now seen corresponding path program 1 times [2019-11-24 04:55:18,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:18,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451747273] [2019-11-24 04:55:18,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:55:18,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451747273] [2019-11-24 04:55:18,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:18,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:55:18,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784600804] [2019-11-24 04:55:18,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:55:18,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:55:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:55:18,820 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:55:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:18,841 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:55:18,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:55:18,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:55:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:18,843 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:55:18,843 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:55:18,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:55:18,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:55:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:55:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:55:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:55:18,855 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:55:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:18,855 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:55:18,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:55:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:55:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:55:18,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:18,857 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:18,857 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 04:55:18,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1988485898, now seen corresponding path program 1 times [2019-11-24 04:55:18,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:18,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079012400] [2019-11-24 04:55:18,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:55:19,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079012400] [2019-11-24 04:55:19,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:19,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:55:19,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633888633] [2019-11-24 04:55:19,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:55:19,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:55:19,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:55:19,047 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 04:55:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:19,085 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-24 04:55:19,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:55:19,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:55:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:19,087 INFO L225 Difference]: With dead ends: 84 [2019-11-24 04:55:19,087 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 04:55:19,088 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 04:55:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 04:55:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-24 04:55:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 04:55:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 04:55:19,096 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 04:55:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:19,096 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 04:55:19,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:55:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 04:55:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:55:19,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:19,098 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:19,098 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 04:55:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1041261031, now seen corresponding path program 1 times [2019-11-24 04:55:19,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:19,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014298539] [2019-11-24 04:55:19,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:55:19,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014298539] [2019-11-24 04:55:19,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:19,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:55:19,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191264620] [2019-11-24 04:55:19,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:55:19,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:19,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:55:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:55:19,274 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 5 states. [2019-11-24 04:55:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:19,484 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2019-11-24 04:55:19,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:55:19,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-24 04:55:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:19,486 INFO L225 Difference]: With dead ends: 124 [2019-11-24 04:55:19,486 INFO L226 Difference]: Without dead ends: 101 [2019-11-24 04:55:19,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:55:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-24 04:55:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2019-11-24 04:55:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-24 04:55:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2019-11-24 04:55:19,499 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 15 [2019-11-24 04:55:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:19,499 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2019-11-24 04:55:19,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:55:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2019-11-24 04:55:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:55:19,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:19,501 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 04:55:19,501 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 04:55:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1670156242, now seen corresponding path program 1 times [2019-11-24 04:55:19,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:19,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888461806] [2019-11-24 04:55:19,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:55:20,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888461806] [2019-11-24 04:55:20,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:20,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 04:55:20,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259127245] [2019-11-24 04:55:20,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:55:20,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:55:20,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:55:20,683 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand 8 states. [2019-11-24 04:55:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:21,418 INFO L93 Difference]: Finished difference Result 153 states and 248 transitions. [2019-11-24 04:55:21,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:55:21,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-24 04:55:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:21,421 INFO L225 Difference]: With dead ends: 153 [2019-11-24 04:55:21,422 INFO L226 Difference]: Without dead ends: 133 [2019-11-24 04:55:21,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-11-24 04:55:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-11-24 04:55:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2019-11-24 04:55:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-24 04:55:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 220 transitions. [2019-11-24 04:55:21,461 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 220 transitions. Word has length 18 [2019-11-24 04:55:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:21,461 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 220 transitions. [2019-11-24 04:55:21,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:55:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 220 transitions. [2019-11-24 04:55:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:55:21,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:21,463 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:21,463 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 04:55:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:21,463 INFO L82 PathProgramCache]: Analyzing trace with hash -882571376, now seen corresponding path program 1 times [2019-11-24 04:55:21,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:21,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641621008] [2019-11-24 04:55:21,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:21,534 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 04:55:21,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641621008] [2019-11-24 04:55:21,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:55:21,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:55:21,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095265596] [2019-11-24 04:55:21,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:55:21,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:55:21,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:55:21,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:55:21,536 INFO L87 Difference]: Start difference. First operand 129 states and 220 transitions. Second operand 3 states. [2019-11-24 04:55:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:55:21,571 INFO L93 Difference]: Finished difference Result 379 states and 648 transitions. [2019-11-24 04:55:21,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:55:21,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 04:55:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:55:21,575 INFO L225 Difference]: With dead ends: 379 [2019-11-24 04:55:21,575 INFO L226 Difference]: Without dead ends: 252 [2019-11-24 04:55:21,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:55:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2019-11-24 04:55:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 221. [2019-11-24 04:55:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-24 04:55:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 393 transitions. [2019-11-24 04:55:21,620 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 393 transitions. Word has length 19 [2019-11-24 04:55:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:55:21,620 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 393 transitions. [2019-11-24 04:55:21,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:55:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 393 transitions. [2019-11-24 04:55:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 04:55:21,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:55:21,622 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:55:21,623 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 04:55:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:55:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash 439535575, now seen corresponding path program 1 times [2019-11-24 04:55:21,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:55:21,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634135654] [2019-11-24 04:55:21,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:55:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:55:21,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634135654] [2019-11-24 04:55:21,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703358153] [2019-11-24 04:55:21,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:55:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:55:22,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:55:22,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:55:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:55:22,227 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:55:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:55:22,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207065784] [2019-11-24 04:55:22,272 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-24 04:55:22,273 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:55:22,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:55:22,286 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:55:22,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:56:19,576 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 04:56:24,031 WARN L192 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 321 DAG size of output: 261 [2019-11-24 04:56:24,458 WARN L192 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 755 [2019-11-24 04:56:26,864 WARN L192 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:28,342 WARN L192 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:29,678 WARN L192 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:31,048 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:32,374 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:33,695 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 1137 [2019-11-24 04:56:34,960 WARN L192 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 1137