/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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:36:28,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:36:28,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:36:28,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:36:28,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:36:28,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:36:28,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:36:28,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:36:28,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:36:28,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:36:28,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:36:28,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:36:28,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:36:28,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:36:28,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:36:28,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:36:28,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:36:28,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:36:28,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:36:28,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:36:28,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:36:28,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:36:28,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:36:28,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:36:28,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:36:28,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:36:28,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:36:28,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:36:28,188 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 03:36:28,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:36:28,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:36:28,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:36:28,215 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:36:28,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:36:28,215 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:36:28,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:36:28,216 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:36:28,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:36:28,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:36:28,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:36:28,217 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:36:28,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:36:28,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:36:28,218 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:36:28,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:36:28,220 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:36:28,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:36:28,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:36:28,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:36:28,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:36:28,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:36:28,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:36:28,222 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:36:28,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:36:28,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:36:28,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:36:28,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:36:28,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:36:28,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:36:28,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:36:28,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:36:28,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:36:28,225 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:36:28,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:36:28,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:36:28,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:36:28,226 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:36:28,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:36:28,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:36:28,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:36:28,518 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:36:28,519 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:36:28,519 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2019-11-24 03:36:28,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c19e4ac/088fe51128d04801940f5c43dcdb95dd/FLAGcd30fe2c5 [2019-11-24 03:36:29,403 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:36:29,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2019-11-24 03:36:29,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c19e4ac/088fe51128d04801940f5c43dcdb95dd/FLAGcd30fe2c5 [2019-11-24 03:36:29,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c19e4ac/088fe51128d04801940f5c43dcdb95dd [2019-11-24 03:36:29,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:36:29,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:36:29,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:36:29,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:36:29,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:36:29,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:36:29" (1/1) ... [2019-11-24 03:36:29,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb81b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:29, skipping insertion in model container [2019-11-24 03:36:29,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:36:29" (1/1) ... [2019-11-24 03:36:29,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:36:30,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:36:32,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:36:32,257 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:36:32,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:36:32,983 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:36:32,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32 WrapperNode [2019-11-24 03:36:32,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:36:32,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:36:32,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:36:32,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:36:32,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:36:33,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:36:33,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:36:33,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:36:33,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (1/1) ... [2019-11-24 03:36:33,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:36:33,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:36:33,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:36:33,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:36:33,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (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 03:36:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:36:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:36:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:36:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:36:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:36:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:36:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:36:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:36:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:36:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:36:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:37:33,856 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:37:33,858 INFO L284 CfgBuilder]: Removed 1208 assume(true) statements. [2019-11-24 03:37:33,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:37:33 BoogieIcfgContainer [2019-11-24 03:37:33,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:37:33,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:37:33,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:37:33,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:37:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:36:29" (1/3) ... [2019-11-24 03:37:33,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c29612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:37:33, skipping insertion in model container [2019-11-24 03:37:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:36:32" (2/3) ... [2019-11-24 03:37:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c29612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:37:33, skipping insertion in model container [2019-11-24 03:37:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:37:33" (3/3) ... [2019-11-24 03:37:33,874 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2019-11-24 03:37:33,887 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:37:33,899 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 03:37:33,911 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 03:37:33,956 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:37:33,957 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:37:33,957 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:37:33,957 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:37:33,957 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:37:33,957 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:37:33,958 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:37:33,958 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:37:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states. [2019-11-24 03:37:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 03:37:34,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:34,004 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:34,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2136136665, now seen corresponding path program 1 times [2019-11-24 03:37:34,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:34,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220181556] [2019-11-24 03:37:34,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:37:35,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220181556] [2019-11-24 03:37:35,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:35,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:37:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440931764] [2019-11-24 03:37:35,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:35,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:35,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:35,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:35,039 INFO L87 Difference]: Start difference. First operand 642 states. Second operand 3 states. [2019-11-24 03:37:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:37,703 INFO L93 Difference]: Finished difference Result 1878 states and 3163 transitions. [2019-11-24 03:37:37,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:37,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-24 03:37:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:37,734 INFO L225 Difference]: With dead ends: 1878 [2019-11-24 03:37:37,734 INFO L226 Difference]: Without dead ends: 1240 [2019-11-24 03:37:37,741 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 03:37:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-11-24 03:37:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2019-11-24 03:37:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2019-11-24 03:37:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 2076 transitions. [2019-11-24 03:37:37,879 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 2076 transitions. Word has length 24 [2019-11-24 03:37:37,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:37,880 INFO L462 AbstractCegarLoop]: Abstraction has 1238 states and 2076 transitions. [2019-11-24 03:37:37,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 2076 transitions. [2019-11-24 03:37:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-24 03:37:37,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:37,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:37,882 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:37,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1537655900, now seen corresponding path program 1 times [2019-11-24 03:37:37,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:37,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068396806] [2019-11-24 03:37:37,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:38,218 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 03:37:38,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068396806] [2019-11-24 03:37:38,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:38,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:37:38,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503899622] [2019-11-24 03:37:38,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:38,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:38,223 INFO L87 Difference]: Start difference. First operand 1238 states and 2076 transitions. Second operand 3 states. [2019-11-24 03:37:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:38,260 INFO L93 Difference]: Finished difference Result 1238 states and 2076 transitions. [2019-11-24 03:37:38,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:38,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-11-24 03:37:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:38,269 INFO L225 Difference]: With dead ends: 1238 [2019-11-24 03:37:38,269 INFO L226 Difference]: Without dead ends: 1236 [2019-11-24 03:37:38,272 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 03:37:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2019-11-24 03:37:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2019-11-24 03:37:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2019-11-24 03:37:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 2074 transitions. [2019-11-24 03:37:38,325 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 2074 transitions. Word has length 27 [2019-11-24 03:37:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:38,325 INFO L462 AbstractCegarLoop]: Abstraction has 1236 states and 2074 transitions. [2019-11-24 03:37:38,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 2074 transitions. [2019-11-24 03:37:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 03:37:38,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:38,329 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:38,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:38,330 INFO L82 PathProgramCache]: Analyzing trace with hash 422705555, now seen corresponding path program 1 times [2019-11-24 03:37:38,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:38,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394882465] [2019-11-24 03:37:38,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:38,617 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 03:37:38,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394882465] [2019-11-24 03:37:38,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:38,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:37:38,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043511655] [2019-11-24 03:37:38,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:38,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:38,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:38,624 INFO L87 Difference]: Start difference. First operand 1236 states and 2074 transitions. Second operand 3 states. [2019-11-24 03:37:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:38,675 INFO L93 Difference]: Finished difference Result 1236 states and 2074 transitions. [2019-11-24 03:37:38,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:38,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-24 03:37:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:38,685 INFO L225 Difference]: With dead ends: 1236 [2019-11-24 03:37:38,685 INFO L226 Difference]: Without dead ends: 1234 [2019-11-24 03:37:38,686 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 03:37:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-11-24 03:37:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2019-11-24 03:37:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2019-11-24 03:37:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 2072 transitions. [2019-11-24 03:37:38,742 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 2072 transitions. Word has length 28 [2019-11-24 03:37:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:38,743 INFO L462 AbstractCegarLoop]: Abstraction has 1234 states and 2072 transitions. [2019-11-24 03:37:38,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 2072 transitions. [2019-11-24 03:37:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-24 03:37:38,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:38,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:38,749 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash 218983238, now seen corresponding path program 1 times [2019-11-24 03:37:38,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:38,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31850913] [2019-11-24 03:37:38,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:39,041 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 03:37:39,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31850913] [2019-11-24 03:37:39,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:39,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:37:39,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542148190] [2019-11-24 03:37:39,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:39,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:39,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:39,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:39,044 INFO L87 Difference]: Start difference. First operand 1234 states and 2072 transitions. Second operand 3 states. [2019-11-24 03:37:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:39,092 INFO L93 Difference]: Finished difference Result 1234 states and 2072 transitions. [2019-11-24 03:37:39,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:39,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-24 03:37:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:39,100 INFO L225 Difference]: With dead ends: 1234 [2019-11-24 03:37:39,100 INFO L226 Difference]: Without dead ends: 1232 [2019-11-24 03:37:39,102 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 03:37:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2019-11-24 03:37:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2019-11-24 03:37:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-11-24 03:37:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 2070 transitions. [2019-11-24 03:37:39,152 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 2070 transitions. Word has length 29 [2019-11-24 03:37:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:39,153 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 2070 transitions. [2019-11-24 03:37:39,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 2070 transitions. [2019-11-24 03:37:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 03:37:39,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:39,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:39,156 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:39,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1801441283, now seen corresponding path program 1 times [2019-11-24 03:37:39,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:39,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833536576] [2019-11-24 03:37:39,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:39,393 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 03:37:39,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833536576] [2019-11-24 03:37:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:39,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:37:39,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675897645] [2019-11-24 03:37:39,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:39,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:39,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:39,395 INFO L87 Difference]: Start difference. First operand 1232 states and 2070 transitions. Second operand 3 states. [2019-11-24 03:37:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:39,502 INFO L93 Difference]: Finished difference Result 2442 states and 4099 transitions. [2019-11-24 03:37:39,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:39,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-24 03:37:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:39,516 INFO L225 Difference]: With dead ends: 2442 [2019-11-24 03:37:39,517 INFO L226 Difference]: Without dead ends: 2434 [2019-11-24 03:37:39,518 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 03:37:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2019-11-24 03:37:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2019-11-24 03:37:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2019-11-24 03:37:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 4088 transitions. [2019-11-24 03:37:39,625 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 4088 transitions. Word has length 30 [2019-11-24 03:37:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:39,627 INFO L462 AbstractCegarLoop]: Abstraction has 2434 states and 4088 transitions. [2019-11-24 03:37:39,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 4088 transitions. [2019-11-24 03:37:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-24 03:37:39,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:39,633 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:39,633 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1114448543, now seen corresponding path program 1 times [2019-11-24 03:37:39,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:39,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199595820] [2019-11-24 03:37:39,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:37:40,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199595820] [2019-11-24 03:37:40,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:40,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:37:40,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559843229] [2019-11-24 03:37:40,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:40,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:40,122 INFO L87 Difference]: Start difference. First operand 2434 states and 4088 transitions. Second operand 3 states. [2019-11-24 03:37:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:40,922 INFO L93 Difference]: Finished difference Result 4934 states and 8278 transitions. [2019-11-24 03:37:40,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:40,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-11-24 03:37:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:40,943 INFO L225 Difference]: With dead ends: 4934 [2019-11-24 03:37:40,944 INFO L226 Difference]: Without dead ends: 2516 [2019-11-24 03:37:40,949 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 03:37:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2019-11-24 03:37:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2510. [2019-11-24 03:37:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2510 states. [2019-11-24 03:37:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 4212 transitions. [2019-11-24 03:37:41,107 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 4212 transitions. Word has length 69 [2019-11-24 03:37:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:41,107 INFO L462 AbstractCegarLoop]: Abstraction has 2510 states and 4212 transitions. [2019-11-24 03:37:41,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 4212 transitions. [2019-11-24 03:37:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-24 03:37:41,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:41,124 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:41,124 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 892648249, now seen corresponding path program 1 times [2019-11-24 03:37:41,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:41,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129922989] [2019-11-24 03:37:41,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:37:41,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129922989] [2019-11-24 03:37:41,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:41,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:37:41,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560201452] [2019-11-24 03:37:41,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:37:41,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:41,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:37:41,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:37:41,550 INFO L87 Difference]: Start difference. First operand 2510 states and 4212 transitions. Second operand 4 states. [2019-11-24 03:37:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:42,042 INFO L93 Difference]: Finished difference Result 9304 states and 15488 transitions. [2019-11-24 03:37:42,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:37:42,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2019-11-24 03:37:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:42,080 INFO L225 Difference]: With dead ends: 9304 [2019-11-24 03:37:42,081 INFO L226 Difference]: Without dead ends: 6810 [2019-11-24 03:37:42,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:37:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2019-11-24 03:37:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 2518. [2019-11-24 03:37:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2019-11-24 03:37:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4220 transitions. [2019-11-24 03:37:42,269 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4220 transitions. Word has length 76 [2019-11-24 03:37:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:42,270 INFO L462 AbstractCegarLoop]: Abstraction has 2518 states and 4220 transitions. [2019-11-24 03:37:42,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:37:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4220 transitions. [2019-11-24 03:37:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-24 03:37:42,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:42,274 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:42,274 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2075496097, now seen corresponding path program 1 times [2019-11-24 03:37:42,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:42,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220091726] [2019-11-24 03:37:42,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:37:42,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220091726] [2019-11-24 03:37:42,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:42,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:37:42,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186147233] [2019-11-24 03:37:42,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:37:42,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:42,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:37:42,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:37:42,513 INFO L87 Difference]: Start difference. First operand 2518 states and 4220 transitions. Second operand 4 states. [2019-11-24 03:37:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:43,227 INFO L93 Difference]: Finished difference Result 8708 states and 14533 transitions. [2019-11-24 03:37:43,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:37:43,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-24 03:37:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:43,264 INFO L225 Difference]: With dead ends: 8708 [2019-11-24 03:37:43,264 INFO L226 Difference]: Without dead ends: 6206 [2019-11-24 03:37:43,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:37:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6206 states. [2019-11-24 03:37:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6206 to 2526. [2019-11-24 03:37:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2526 states. [2019-11-24 03:37:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 4228 transitions. [2019-11-24 03:37:43,566 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 4228 transitions. Word has length 89 [2019-11-24 03:37:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:43,567 INFO L462 AbstractCegarLoop]: Abstraction has 2526 states and 4228 transitions. [2019-11-24 03:37:43,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:37:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 4228 transitions. [2019-11-24 03:37:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-24 03:37:43,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:43,572 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:43,572 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1642439784, now seen corresponding path program 1 times [2019-11-24 03:37:43,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:43,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038674973] [2019-11-24 03:37:43,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:37:43,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038674973] [2019-11-24 03:37:43,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:43,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:37:43,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665998030] [2019-11-24 03:37:43,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:37:43,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:37:43,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:37:43,914 INFO L87 Difference]: Start difference. First operand 2526 states and 4228 transitions. Second operand 4 states. [2019-11-24 03:37:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:44,780 INFO L93 Difference]: Finished difference Result 9588 states and 15968 transitions. [2019-11-24 03:37:44,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:37:44,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-24 03:37:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:44,799 INFO L225 Difference]: With dead ends: 9588 [2019-11-24 03:37:44,799 INFO L226 Difference]: Without dead ends: 7078 [2019-11-24 03:37:44,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:37:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7078 states. [2019-11-24 03:37:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7078 to 2534. [2019-11-24 03:37:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2019-11-24 03:37:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4236 transitions. [2019-11-24 03:37:45,204 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4236 transitions. Word has length 89 [2019-11-24 03:37:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:45,206 INFO L462 AbstractCegarLoop]: Abstraction has 2534 states and 4236 transitions. [2019-11-24 03:37:45,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:37:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4236 transitions. [2019-11-24 03:37:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-24 03:37:45,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:45,217 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:45,217 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash 343077189, now seen corresponding path program 1 times [2019-11-24 03:37:45,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:45,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452745098] [2019-11-24 03:37:45,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:37:45,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452745098] [2019-11-24 03:37:45,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:45,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:37:45,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298826157] [2019-11-24 03:37:45,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:37:45,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:45,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:37:45,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:37:45,639 INFO L87 Difference]: Start difference. First operand 2534 states and 4236 transitions. Second operand 3 states. [2019-11-24 03:37:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:37:45,989 INFO L93 Difference]: Finished difference Result 7566 states and 12638 transitions. [2019-11-24 03:37:45,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:37:45,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-11-24 03:37:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:37:46,002 INFO L225 Difference]: With dead ends: 7566 [2019-11-24 03:37:46,003 INFO L226 Difference]: Without dead ends: 5048 [2019-11-24 03:37:46,008 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 03:37:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2019-11-24 03:37:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 2578. [2019-11-24 03:37:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2019-11-24 03:37:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 4308 transitions. [2019-11-24 03:37:46,232 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 4308 transitions. Word has length 89 [2019-11-24 03:37:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:37:46,233 INFO L462 AbstractCegarLoop]: Abstraction has 2578 states and 4308 transitions. [2019-11-24 03:37:46,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:37:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 4308 transitions. [2019-11-24 03:37:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-24 03:37:46,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:37:46,237 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:37:46,237 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:37:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:37:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1420944353, now seen corresponding path program 1 times [2019-11-24 03:37:46,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:37:46,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814680252] [2019-11-24 03:37:46,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:37:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:37:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:37:46,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814680252] [2019-11-24 03:37:46,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:37:46,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:37:46,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230579176] [2019-11-24 03:37:46,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:37:46,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:37:46,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:37:46,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:37:46,997 INFO L87 Difference]: Start difference. First operand 2578 states and 4308 transitions. Second operand 4 states.