java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 08:20:58,151 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 08:20:58,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 08:20:58,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 08:20:58,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 08:20:58,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 08:20:58,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 08:20:58,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 08:20:58,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 08:20:58,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 08:20:58,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 08:20:58,183 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 08:20:58,184 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 08:20:58,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 08:20:58,190 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 08:20:58,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 08:20:58,191 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 08:20:58,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 08:20:58,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 08:20:58,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 08:20:58,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 08:20:58,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 08:20:58,215 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 08:20:58,215 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 08:20:58,215 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 08:20:58,216 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 08:20:58,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 08:20:58,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 08:20:58,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 08:20:58,228 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 08:20:58,229 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 08:20:58,230 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 08:20:58,230 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 08:20:58,230 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 08:20:58,231 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 08:20:58,232 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 08:20:58,232 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 08:20:58,258 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 08:20:58,258 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 08:20:58,259 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 08:20:58,259 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 08:20:58,260 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 08:20:58,260 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 08:20:58,260 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 08:20:58,260 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 08:20:58,260 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 08:20:58,261 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 08:20:58,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 08:20:58,264 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 08:20:58,265 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 08:20:58,265 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 08:20:58,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 08:20:58,265 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 08:20:58,265 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 08:20:58,266 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 08:20:58,266 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 08:20:58,266 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 08:20:58,266 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 08:20:58,266 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 08:20:58,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 08:20:58,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 08:20:58,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 08:20:58,267 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 08:20:58,267 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 08:20:58,267 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 08:20:58,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 08:20:58,270 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 08:20:58,270 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 08:20:58,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 08:20:58,271 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 08:20:58,271 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 08:20:58,271 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 08:20:58,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 08:20:58,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 08:20:58,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 08:20:58,347 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 08:20:58,348 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 08:20:58,348 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-07-21 08:20:58,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/98e316201/cc34859ecab84a31ae1d1060846bd8fa/FLAG1046847da [2018-07-21 08:20:59,069 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 08:20:59,070 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-07-21 08:20:59,119 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/98e316201/cc34859ecab84a31ae1d1060846bd8fa/FLAG1046847da [2018-07-21 08:20:59,143 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/98e316201/cc34859ecab84a31ae1d1060846bd8fa [2018-07-21 08:20:59,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 08:20:59,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 08:20:59,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 08:20:59,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 08:20:59,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 08:20:59,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:20:59,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0a89b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59, skipping insertion in model container [2018-07-21 08:20:59,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:20:59,416 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 08:20:59,736 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 08:20:59,758 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 08:20:59,874 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 08:20:59,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59 WrapperNode [2018-07-21 08:20:59,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 08:20:59,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 08:20:59,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 08:20:59,918 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 08:20:59,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:20:59,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 08:21:00,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 08:21:00,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 08:21:00,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 08:21:00,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... [2018-07-21 08:21:00,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 08:21:00,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 08:21:00,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 08:21:00,095 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 08:21:00,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 08:21:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 08:21:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 08:21:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 08:21:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 08:21:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 08:21:00,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 08:21:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 08:21:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 08:21:03,699 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 08:21:03,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:21:03 BoogieIcfgContainer [2018-07-21 08:21:03,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 08:21:03,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 08:21:03,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 08:21:03,705 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 08:21:03,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:20:59" (1/3) ... [2018-07-21 08:21:03,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e701fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:21:03, skipping insertion in model container [2018-07-21 08:21:03,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:59" (2/3) ... [2018-07-21 08:21:03,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e701fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:21:03, skipping insertion in model container [2018-07-21 08:21:03,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:21:03" (3/3) ... [2018-07-21 08:21:03,709 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label55_true-unreach-call_false-termination.c [2018-07-21 08:21:03,720 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 08:21:03,730 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 08:21:03,788 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 08:21:03,789 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 08:21:03,791 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 08:21:03,791 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 08:21:03,791 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 08:21:03,791 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 08:21:03,791 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 08:21:03,792 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 08:21:03,792 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 08:21:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-07-21 08:21:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-21 08:21:03,835 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:21:03,837 INFO L358 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] [2018-07-21 08:21:03,837 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:21:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash -301102600, now seen corresponding path program 1 times [2018-07-21 08:21:03,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:21:03,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:03,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:21:03,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:03,893 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:21:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:21:04,542 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 08:21:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:21:04,604 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:21:04,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 08:21:04,605 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:21:04,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 08:21:04,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 08:21:04,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:21:04,631 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-07-21 08:21:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:21:06,163 INFO L93 Difference]: Finished difference Result 623 states and 1063 transitions. [2018-07-21 08:21:06,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 08:21:06,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2018-07-21 08:21:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:21:06,187 INFO L225 Difference]: With dead ends: 623 [2018-07-21 08:21:06,187 INFO L226 Difference]: Without dead ends: 384 [2018-07-21 08:21:06,194 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:21:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-21 08:21:06,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-07-21 08:21:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-21 08:21:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2018-07-21 08:21:06,272 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 112 [2018-07-21 08:21:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:21:06,273 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2018-07-21 08:21:06,273 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 08:21:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2018-07-21 08:21:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-21 08:21:06,281 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:21:06,281 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 08:21:06,281 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:21:06,282 INFO L82 PathProgramCache]: Analyzing trace with hash -322233895, now seen corresponding path program 1 times [2018-07-21 08:21:06,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:21:06,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:06,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:21:06,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:06,284 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:21:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:21:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:21:06,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:21:06,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 08:21:06,487 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:21:06,490 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 08:21:06,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 08:21:06,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:21:06,491 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand 3 states. [2018-07-21 08:21:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:21:07,239 INFO L93 Difference]: Finished difference Result 1051 states and 1838 transitions. [2018-07-21 08:21:07,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 08:21:07,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-07-21 08:21:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:21:07,250 INFO L225 Difference]: With dead ends: 1051 [2018-07-21 08:21:07,251 INFO L226 Difference]: Without dead ends: 675 [2018-07-21 08:21:07,256 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:21:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-07-21 08:21:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-07-21 08:21:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-07-21 08:21:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1091 transitions. [2018-07-21 08:21:07,316 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1091 transitions. Word has length 122 [2018-07-21 08:21:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:21:07,317 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1091 transitions. [2018-07-21 08:21:07,317 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 08:21:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1091 transitions. [2018-07-21 08:21:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-21 08:21:07,323 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:21:07,323 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 08:21:07,324 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:21:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1023957314, now seen corresponding path program 1 times [2018-07-21 08:21:07,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:21:07,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:07,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:21:07,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:07,326 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:21:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:21:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:21:07,698 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:21:07,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 08:21:07,699 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:21:07,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 08:21:07,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 08:21:07,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 08:21:07,700 INFO L87 Difference]: Start difference. First operand 675 states and 1091 transitions. Second operand 6 states. [2018-07-21 08:21:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:21:10,274 INFO L93 Difference]: Finished difference Result 1768 states and 2910 transitions. [2018-07-21 08:21:10,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 08:21:10,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-07-21 08:21:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:21:10,288 INFO L225 Difference]: With dead ends: 1768 [2018-07-21 08:21:10,288 INFO L226 Difference]: Without dead ends: 1099 [2018-07-21 08:21:10,292 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 08:21:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2018-07-21 08:21:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1080. [2018-07-21 08:21:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2018-07-21 08:21:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1640 transitions. [2018-07-21 08:21:10,358 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1640 transitions. Word has length 135 [2018-07-21 08:21:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:21:10,358 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1640 transitions. [2018-07-21 08:21:10,358 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 08:21:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1640 transitions. [2018-07-21 08:21:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-21 08:21:10,363 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:21:10,363 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 08:21:10,364 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:21:10,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1132847554, now seen corresponding path program 1 times [2018-07-21 08:21:10,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:21:10,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:10,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:21:10,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:10,366 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:21:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:21:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:21:10,734 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:21:10,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 08:21:10,734 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:21:10,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 08:21:10,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 08:21:10,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-21 08:21:10,735 INFO L87 Difference]: Start difference. First operand 1080 states and 1640 transitions. Second operand 5 states. [2018-07-21 08:21:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:21:12,673 INFO L93 Difference]: Finished difference Result 2303 states and 3556 transitions. [2018-07-21 08:21:12,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 08:21:12,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-07-21 08:21:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:21:12,684 INFO L225 Difference]: With dead ends: 2303 [2018-07-21 08:21:12,684 INFO L226 Difference]: Without dead ends: 1079 [2018-07-21 08:21:12,689 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-21 08:21:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2018-07-21 08:21:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2018-07-21 08:21:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2018-07-21 08:21:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1624 transitions. [2018-07-21 08:21:12,751 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1624 transitions. Word has length 137 [2018-07-21 08:21:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:21:12,751 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1624 transitions. [2018-07-21 08:21:12,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 08:21:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1624 transitions. [2018-07-21 08:21:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-21 08:21:12,759 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:21:12,759 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-21 08:21:12,760 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:21:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash -451396023, now seen corresponding path program 1 times [2018-07-21 08:21:12,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:21:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:12,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:21:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:21:12,762 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:21:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:21:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:21:13,062 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 08:21:13,063 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 08:21:13,063 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-07-21 08:21:13,066 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 08:21:13,137 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 08:21:13,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 08:25:06,910 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 08:25:06,912 INFO L272 AbstractInterpreter]: Visited 116 different actions 296 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 38 variables. [2018-07-21 08:25:07,019 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown