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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:28:44,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:28:44,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:28:44,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 23:28:44,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 23:28:44,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 23:28:44,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 23:28:44,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 23:28:44,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 23:28:44,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 23:28:44,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 23:28:44,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 23:28:44,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:28:44,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:28:44,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:28:44,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:28:44,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:28:44,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:28:44,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:28:44,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:28:44,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:28:44,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:28:44,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:28:44,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:28:44,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 23:28:44,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 23:28:44,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 23:28:44,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 23:28:44,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 23:28:44,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 23:28:44,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:28:44,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:28:44,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:28:44,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:28:44,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:28:44,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:28:44,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:28:44,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:28:44,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:28:44,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:28:44,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:28:44,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 23:28:44,721 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:28:44,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:28:44,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:28:44,722 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:28:44,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:28:44,723 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:28:44,723 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:28:44,723 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:28:44,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:28:44,723 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:28:44,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:28:44,724 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:28:44,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:28:44,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:28:44,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:28:44,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:28:44,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:28:44,726 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:28:44,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:28:44,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:28:44,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:28:44,726 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:28:44,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:28:44,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:28:44,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:28:44,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:28:44,727 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:28:44,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:28:44,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:28:44,728 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:28:44,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:28:44,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:28:44,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:28:44,786 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:28:44,786 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:28:44,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36.c [2019-09-09 23:28:44,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a8ca927/3233ad16813b47388fc85f48c43bac90/FLAGe5ecc3978 [2019-09-09 23:28:45,739 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:28:45,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36.c [2019-09-09 23:28:45,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a8ca927/3233ad16813b47388fc85f48c43bac90/FLAGe5ecc3978 [2019-09-09 23:28:46,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a8ca927/3233ad16813b47388fc85f48c43bac90 [2019-09-09 23:28:46,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:28:46,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:28:46,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:28:46,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:28:46,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:28:46,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:28:46" (1/1) ... [2019-09-09 23:28:46,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2701da4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:46, skipping insertion in model container [2019-09-09 23:28:46,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:28:46" (1/1) ... [2019-09-09 23:28:46,259 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:28:46,481 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:28:48,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:28:48,923 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:28:50,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:28:50,150 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:28:50,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50 WrapperNode [2019-09-09 23:28:50,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:28:50,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:28:50,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:28:50,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:28:50,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (1/1) ... [2019-09-09 23:28:50,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:28:50,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:28:50,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:28:50,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:28:50,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (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 [2019-09-09 23:28:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:28:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:28:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:28:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:28:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:28:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:28:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:29:01,506 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:29:01,506 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:29:01,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:29:01 BoogieIcfgContainer [2019-09-09 23:29:01,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:29:01,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:29:01,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:29:01,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:29:01,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:28:46" (1/3) ... [2019-09-09 23:29:01,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da00b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:29:01, skipping insertion in model container [2019-09-09 23:29:01,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:28:50" (2/3) ... [2019-09-09 23:29:01,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da00b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:29:01, skipping insertion in model container [2019-09-09 23:29:01,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:29:01" (3/3) ... [2019-09-09 23:29:01,518 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label36.c [2019-09-09 23:29:01,528 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:29:01,539 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:29:01,557 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:29:01,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:29:01,585 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:29:01,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:29:01,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:29:01,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:29:01,586 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:29:01,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:29:01,586 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:29:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:29:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-09 23:29:01,645 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:29:01,646 INFO L399 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] [2019-09-09 23:29:01,649 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:29:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:29:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1019367100, now seen corresponding path program 1 times [2019-09-09 23:29:01,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:29:01,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:01,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:29:01,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:01,713 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:29:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:29:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:29:01,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:29:01,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 23:29:01,985 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:29:01,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 23:29:02,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 23:29:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:29:02,009 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 23:29:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:29:12,729 INFO L93 Difference]: Finished difference Result 3225 states and 5799 transitions. [2019-09-09 23:29:12,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 23:29:12,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-09-09 23:29:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:29:12,775 INFO L225 Difference]: With dead ends: 3225 [2019-09-09 23:29:12,775 INFO L226 Difference]: Without dead ends: 3157 [2019-09-09 23:29:12,777 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:29:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2019-09-09 23:29:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3153. [2019-09-09 23:29:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-09 23:29:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5682 transitions. [2019-09-09 23:29:12,960 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5682 transitions. Word has length 39 [2019-09-09 23:29:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:29:12,960 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5682 transitions. [2019-09-09 23:29:12,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 23:29:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5682 transitions. [2019-09-09 23:29:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-09 23:29:12,966 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:29:12,966 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 23:29:12,967 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:29:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:29:12,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1901563190, now seen corresponding path program 1 times [2019-09-09 23:29:12,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:29:12,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:12,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:29:12,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:12,969 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:29:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:29:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:29:13,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:29:13,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:29:13,280 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:29:13,283 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:29:13,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:29:13,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:29:13,284 INFO L87 Difference]: Start difference. First operand 3153 states and 5682 transitions. Second operand 6 states. [2019-09-09 23:29:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:29:28,727 INFO L93 Difference]: Finished difference Result 4689 states and 7843 transitions. [2019-09-09 23:29:28,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:29:28,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-09-09 23:29:28,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:29:28,753 INFO L225 Difference]: With dead ends: 4689 [2019-09-09 23:29:28,754 INFO L226 Difference]: Without dead ends: 4689 [2019-09-09 23:29:28,755 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:29:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2019-09-09 23:29:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 4638. [2019-09-09 23:29:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2019-09-09 23:29:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7774 transitions. [2019-09-09 23:29:28,872 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7774 transitions. Word has length 110 [2019-09-09 23:29:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:29:28,872 INFO L475 AbstractCegarLoop]: Abstraction has 4638 states and 7774 transitions. [2019-09-09 23:29:28,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:29:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7774 transitions. [2019-09-09 23:29:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-09 23:29:28,876 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:29:28,876 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 23:29:28,876 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:29:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:29:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 604487352, now seen corresponding path program 1 times [2019-09-09 23:29:28,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:29:28,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:28,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:29:28,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:28,879 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:29:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:29:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:29:29,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:29:29,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:29:29,082 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:29:29,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:29:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:29:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:29:29,089 INFO L87 Difference]: Start difference. First operand 4638 states and 7774 transitions. Second operand 6 states. [2019-09-09 23:29:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:29:54,063 INFO L93 Difference]: Finished difference Result 13945 states and 20896 transitions. [2019-09-09 23:29:54,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 23:29:54,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2019-09-09 23:29:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:29:54,132 INFO L225 Difference]: With dead ends: 13945 [2019-09-09 23:29:54,132 INFO L226 Difference]: Without dead ends: 13945 [2019-09-09 23:29:54,133 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:29:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2019-09-09 23:29:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13883. [2019-09-09 23:29:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2019-09-09 23:29:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 20516 transitions. [2019-09-09 23:29:54,514 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 20516 transitions. Word has length 128 [2019-09-09 23:29:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:29:54,514 INFO L475 AbstractCegarLoop]: Abstraction has 13883 states and 20516 transitions. [2019-09-09 23:29:54,515 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:29:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 20516 transitions. [2019-09-09 23:29:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-09 23:29:54,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:29:54,520 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:29:54,521 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:29:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:29:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash -433548535, now seen corresponding path program 1 times [2019-09-09 23:29:54,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:29:54,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:54,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:29:54,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:29:54,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:29:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:29:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:29:54,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:29:54,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:29:54,813 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:29:54,814 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:29:54,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:29:54,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:29:54,815 INFO L87 Difference]: Start difference. First operand 13883 states and 20516 transitions. Second operand 5 states. [2019-09-09 23:30:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:30:14,450 INFO L93 Difference]: Finished difference Result 29714 states and 42988 transitions. [2019-09-09 23:30:14,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:30:14,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2019-09-09 23:30:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:30:14,581 INFO L225 Difference]: With dead ends: 29714 [2019-09-09 23:30:14,581 INFO L226 Difference]: Without dead ends: 29714 [2019-09-09 23:30:14,582 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:30:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29714 states. [2019-09-09 23:30:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29714 to 28660. [2019-09-09 23:30:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28660 states. [2019-09-09 23:30:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28660 states to 28660 states and 40233 transitions. [2019-09-09 23:30:15,416 INFO L78 Accepts]: Start accepts. Automaton has 28660 states and 40233 transitions. Word has length 173 [2019-09-09 23:30:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:30:15,418 INFO L475 AbstractCegarLoop]: Abstraction has 28660 states and 40233 transitions. [2019-09-09 23:30:15,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:30:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 28660 states and 40233 transitions. [2019-09-09 23:30:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-09-09 23:30:15,423 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:30:15,423 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:30:15,423 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:30:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:30:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash 158395150, now seen corresponding path program 1 times [2019-09-09 23:30:15,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:30:15,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:30:15,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:30:15,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:30:15,425 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:30:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:30:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:30:15,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:30:15,633 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:30:15,634 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2019-09-09 23:30:15,639 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5446], [5448], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:30:15,723 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:30:15,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:30:21,073 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:30:21,075 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Performed 216 root evaluator evaluations with a maximum evaluation depth of 13. Performed 216 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:30:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:30:21,084 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:30:24,308 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 75.66% of their original sizes. [2019-09-09 23:30:24,308 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:30:24,396 INFO L420 sIntCurrentIteration]: We unified 191 AI predicates to 191 [2019-09-09 23:30:24,396 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:30:24,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:30:24,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:30:24,398 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:30:24,398 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:30:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:30:24,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:30:24,399 INFO L87 Difference]: Start difference. First operand 28660 states and 40233 transitions. Second operand 10 states. [2019-09-09 23:33:33,950 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.