java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:04:49,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:04:49,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:04:49,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:04:49,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:04:49,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:04:49,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:04:49,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:04:49,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:04:49,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:04:49,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:04:49,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:04:49,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:04:49,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:04:49,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:04:49,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:04:49,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:04:49,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:04:49,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:04:49,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:04:49,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:04:49,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:04:49,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:04:49,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:04:49,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:04:49,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:04:49,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:04:49,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:04:49,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:04:49,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:04:49,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:04:49,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:04:49,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:04:49,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:04:49,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:04:49,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:04:49,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:04:49,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:04:49,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:04:49,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:04:49,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:04:49,931 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:04:49,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:04:49,932 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:04:49,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:04:49,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:04:49,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:04:49,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:04:49,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:04:49,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:04:49,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:04:49,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:04:49,933 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:04:49,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:04:49,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:04:49,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:04:49,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:04:49,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:04:49,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:04:49,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:04:49,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:04:49,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:04:49,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:04:49,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:04:49,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:04:49,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:04:50,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:04:50,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:04:50,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:04:50,233 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:04:50,233 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:04:50,234 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2019-10-15 01:04:50,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4027968f6/2378f7d4bd7c442d929b40cf55c5f0fa/FLAGdc208d164 [2019-10-15 01:04:50,874 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:04:50,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2019-10-15 01:04:50,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4027968f6/2378f7d4bd7c442d929b40cf55c5f0fa/FLAGdc208d164 [2019-10-15 01:04:51,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4027968f6/2378f7d4bd7c442d929b40cf55c5f0fa [2019-10-15 01:04:51,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:04:51,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:04:51,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:51,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:04:51,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:04:51,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:51" (1/1) ... [2019-10-15 01:04:51,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8ce55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:51, skipping insertion in model container [2019-10-15 01:04:51,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:51" (1/1) ... [2019-10-15 01:04:51,156 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:04:51,223 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:04:51,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:51,808 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:04:52,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:52,047 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:04:52,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52 WrapperNode [2019-10-15 01:04:52,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:52,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:04:52,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:04:52,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:04:52,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (1/1) ... [2019-10-15 01:04:52,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:04:52,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:04:52,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:04:52,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:04:52,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (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 [2019-10-15 01:04:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:04:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:04:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:04:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:04:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-15 01:04:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-15 01:04:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:04:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:04:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:04:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:04:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:04:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:04:54,149 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:04:54,150 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:04:54,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:54 BoogieIcfgContainer [2019-10-15 01:04:54,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:04:54,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:04:54,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:04:54,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:04:54,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:04:51" (1/3) ... [2019-10-15 01:04:54,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349468cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:54, skipping insertion in model container [2019-10-15 01:04:54,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:52" (2/3) ... [2019-10-15 01:04:54,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349468cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:54, skipping insertion in model container [2019-10-15 01:04:54,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:54" (3/3) ... [2019-10-15 01:04:54,162 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.c [2019-10-15 01:04:54,174 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:04:54,183 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:04:54,197 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:04:54,246 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:04:54,246 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:04:54,246 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:04:54,247 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:04:54,247 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:04:54,247 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:04:54,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:04:54,248 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:04:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-10-15 01:04:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:04:54,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:54,304 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:54,307 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash -745324545, now seen corresponding path program 1 times [2019-10-15 01:04:54,322 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:54,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70599517] [2019-10-15 01:04:54,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:54,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:54,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:00,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70599517] [2019-10-15 01:05:00,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:00,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2019-10-15 01:05:00,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937406293] [2019-10-15 01:05:00,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-10-15 01:05:00,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:00,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-10-15 01:05:00,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=4400, Unknown=0, NotChecked=0, Total=4556 [2019-10-15 01:05:00,611 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 68 states.