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 -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:15:48,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:15:48,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:15:48,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:15:48,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:15:48,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:15:48,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:15:48,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:15:48,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:15:48,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:15:48,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:15:48,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:15:48,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:15:48,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:15:48,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:15:48,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:15:48,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:15:48,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:15:48,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:15:48,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:15:48,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:15:48,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:15:48,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:15:48,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:15:48,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:15:48,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:15:48,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:15:48,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:15:48,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:15:48,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:15:48,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:15:48,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:15:48,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:15:48,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:15:48,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:15:48,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:15:48,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:15:48,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:15:48,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:15:48,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:15:48,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:15:48,517 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 [2019-10-13 19:15:48,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:15:48,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:15:48,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:15:48,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:15:48,543 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:15:48,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:15:48,543 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:15:48,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:15:48,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:15:48,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:15:48,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:15:48,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:15:48,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:15:48,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:15:48,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:15:48,546 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:15:48,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:15:48,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:15:48,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:15:48,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:15:48,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:15:48,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:15:48,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:15:48,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:15:48,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:15:48,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:15:48,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:15:48,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:15:48,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:15:48,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:15:48,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:15:48,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:15:48,851 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:15:48,852 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:15:48,852 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2019-10-13 19:15:48,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6597de854/d1c79b2123d44fd89e87fc26c1fbb920/FLAG38ca28b87 [2019-10-13 19:15:49,479 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:15:49,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2019-10-13 19:15:49,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6597de854/d1c79b2123d44fd89e87fc26c1fbb920/FLAG38ca28b87 [2019-10-13 19:15:49,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6597de854/d1c79b2123d44fd89e87fc26c1fbb920 [2019-10-13 19:15:49,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:15:49,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:15:49,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:49,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:15:49,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:15:49,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cabe9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:49, skipping insertion in model container [2019-10-13 19:15:49,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:49" (1/1) ... [2019-10-13 19:15:49,814 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:15:49,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:15:50,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:50,458 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:15:50,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:50,680 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:15:50,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50 WrapperNode [2019-10-13 19:15:50,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:50,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:15:50,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:15:50,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:15:50,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2019-10-13 19:15:50,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:15:50,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:15:50,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:15:50,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:15:50,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (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 [2019-10-13 19:15:50,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:15:50,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:15:50,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:15:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:15:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-13 19:15:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 19:15:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:15:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:15:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:15:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:15:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:15:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:15:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:15:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:15:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:15:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:15:50,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:15:52,924 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:15:52,925 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:15:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:52 BoogieIcfgContainer [2019-10-13 19:15:52,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:15:52,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:15:52,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:15:52,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:15:52,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:49" (1/3) ... [2019-10-13 19:15:52,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5160a48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:52, skipping insertion in model container [2019-10-13 19:15:52,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (2/3) ... [2019-10-13 19:15:52,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5160a48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:52, skipping insertion in model container [2019-10-13 19:15:52,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:52" (3/3) ... [2019-10-13 19:15:52,942 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.c [2019-10-13 19:15:52,952 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:15:52,963 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:15:52,976 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:15:53,006 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:15:53,006 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:15:53,007 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:15:53,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:15:53,007 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:15:53,007 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:15:53,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:15:53,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:15:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-10-13 19:15:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 19:15:53,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:53,042 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] [2019-10-13 19:15:53,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash -745324545, now seen corresponding path program 1 times [2019-10-13 19:15:53,055 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:53,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015008230] [2019-10-13 19:15:53,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:53,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:53,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:00,299 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2019-10-13 19:16:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:00,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015008230] [2019-10-13 19:16:00,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:00,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2019-10-13 19:16:00,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286773148] [2019-10-13 19:16:00,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2019-10-13 19:16:00,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2019-10-13 19:16:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=4534, Unknown=0, NotChecked=0, Total=4692 [2019-10-13 19:16:00,544 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 69 states.