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/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 16:18:19,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 16:18:19,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 16:18:19,582 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 16:18:19,583 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 16:18:19,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 16:18:19,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 16:18:19,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 16:18:19,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 16:18:19,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 16:18:19,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 16:18:19,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 16:18:19,595 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 16:18:19,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 16:18:19,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 16:18:19,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 16:18:19,601 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 16:18:19,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 16:18:19,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 16:18:19,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 16:18:19,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 16:18:19,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 16:18:19,622 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 16:18:19,630 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 16:18:19,630 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 16:18:19,631 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 16:18:19,632 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 16:18:19,633 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 16:18:19,652 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 16:18:19,653 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 16:18:19,654 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 16:18:19,654 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 16:18:19,654 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 16:18:19,654 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 16:18:19,654 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 16:18:19,655 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 16:18:19,655 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 16:18:19,655 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 16:18:19,655 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 16:18:19,655 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 16:18:19,656 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 16:18:19,656 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 16:18:19,656 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 16:18:19,657 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 16:18:19,657 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 16:18:19,657 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 16:18:19,657 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 16:18:19,657 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 16:18:19,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 16:18:19,658 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 16:18:19,658 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 16:18:19,658 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 16:18:19,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 16:18:19,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 16:18:19,659 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 16:18:19,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 16:18:19,659 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 16:18:19,659 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 16:18:19,660 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 16:18:19,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 16:18:19,660 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 16:18:19,660 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 16:18:19,660 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 16:18:19,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 16:18:19,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 16:18:19,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 16:18:19,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 16:18:19,726 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 16:18:19,727 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-07-21 16:18:20,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c554083c2/8f71568c45f14df1891843270f949689/FLAG27747a5bc [2018-07-21 16:18:20,640 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 16:18:20,641 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-07-21 16:18:20,678 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c554083c2/8f71568c45f14df1891843270f949689/FLAG27747a5bc [2018-07-21 16:18:20,699 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c554083c2/8f71568c45f14df1891843270f949689 [2018-07-21 16:18:20,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 16:18:20,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 16:18:20,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 16:18:20,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 16:18:20,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 16:18:20,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:18:20" (1/1) ... [2018-07-21 16:18:20,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50efbc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:20, skipping insertion in model container [2018-07-21 16:18:20,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:18:20" (1/1) ... [2018-07-21 16:18:21,079 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 16:18:22,250 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 16:18:22,270 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 16:18:23,120 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 16:18:23,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23 WrapperNode [2018-07-21 16:18:23,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 16:18:23,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 16:18:23,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 16:18:23,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 16:18:23,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 16:18:23,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 16:18:23,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 16:18:23,622 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 16:18:23,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:23,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:24,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:24,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (1/1) ... [2018-07-21 16:18:24,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 16:18:24,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 16:18:24,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 16:18:24,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 16:18:24,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (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 16:18:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 16:18:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 16:18:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-21 16:18:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-21 16:18:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 16:18:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 16:18:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 16:18:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 16:18:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 16:18:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 16:18:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 16:18:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 16:18:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 16:18:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 16:18:35,092 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 16:18:35,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:18:35 BoogieIcfgContainer [2018-07-21 16:18:35,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 16:18:35,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 16:18:35,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 16:18:35,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 16:18:35,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:18:20" (1/3) ... [2018-07-21 16:18:35,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f82b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:18:35, skipping insertion in model container [2018-07-21 16:18:35,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:23" (2/3) ... [2018-07-21 16:18:35,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f82b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:18:35, skipping insertion in model container [2018-07-21 16:18:35,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:18:35" (3/3) ... [2018-07-21 16:18:35,101 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-07-21 16:18:35,110 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 16:18:35,121 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 16:18:35,184 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 16:18:35,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 16:18:35,186 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 16:18:35,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 16:18:35,186 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 16:18:35,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 16:18:35,186 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 16:18:35,187 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 16:18:35,187 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 16:18:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-21 16:18:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-21 16:18:35,240 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:18:35,241 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] [2018-07-21 16:18:35,241 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 16:18:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1047613451, now seen corresponding path program 1 times [2018-07-21 16:18:35,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:18:35,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:35,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:18:35,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:35,297 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:18:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:18:35,799 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 16:18:35,801 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:18:35,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 16:18:35,802 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:18:35,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 16:18:35,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 16:18:35,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 16:18:35,824 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-21 16:18:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:18:42,507 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-21 16:18:42,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 16:18:42,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-07-21 16:18:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:18:42,545 INFO L225 Difference]: With dead ends: 2446 [2018-07-21 16:18:42,545 INFO L226 Difference]: Without dead ends: 1604 [2018-07-21 16:18:42,560 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 16:18:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-21 16:18:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-21 16:18:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-21 16:18:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-21 16:18:42,737 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 61 [2018-07-21 16:18:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:18:42,738 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-21 16:18:42,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 16:18:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-21 16:18:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-21 16:18:42,751 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:18:42,751 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 16:18:42,752 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 16:18:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1348643772, now seen corresponding path program 1 times [2018-07-21 16:18:42,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:18:42,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:42,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:18:42,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:42,754 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:18:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:18:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:18:43,059 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:18:43,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 16:18:43,059 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:18:43,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 16:18:43,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 16:18:43,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 16:18:43,063 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-07-21 16:18:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:18:54,488 INFO L93 Difference]: Finished difference Result 4808 states and 8979 transitions. [2018-07-21 16:18:54,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 16:18:54,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-07-21 16:18:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:18:54,510 INFO L225 Difference]: With dead ends: 4808 [2018-07-21 16:18:54,511 INFO L226 Difference]: Without dead ends: 3210 [2018-07-21 16:18:54,516 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 16:18:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2018-07-21 16:18:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3194. [2018-07-21 16:18:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2018-07-21 16:18:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5697 transitions. [2018-07-21 16:18:54,661 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5697 transitions. Word has length 135 [2018-07-21 16:18:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:18:54,662 INFO L471 AbstractCegarLoop]: Abstraction has 3194 states and 5697 transitions. [2018-07-21 16:18:54,662 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 16:18:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5697 transitions. [2018-07-21 16:18:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-21 16:18:54,680 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:18:54,681 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 16:18:54,681 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 16:18:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 799505000, now seen corresponding path program 1 times [2018-07-21 16:18:54,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:18:54,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:54,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:18:54,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:18:54,683 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:18:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:18:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:18:54,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:18:54,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 16:18:54,901 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:18:54,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 16:18:54,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 16:18:54,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 16:18:54,902 INFO L87 Difference]: Start difference. First operand 3194 states and 5697 transitions. Second operand 4 states. [2018-07-21 16:19:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:19:05,274 INFO L93 Difference]: Finished difference Result 11073 states and 19969 transitions. [2018-07-21 16:19:05,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 16:19:05,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-07-21 16:19:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:19:05,326 INFO L225 Difference]: With dead ends: 11073 [2018-07-21 16:19:05,327 INFO L226 Difference]: Without dead ends: 7885 [2018-07-21 16:19:05,345 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 16:19:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7885 states. [2018-07-21 16:19:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7885 to 7885. [2018-07-21 16:19:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7885 states. [2018-07-21 16:19:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 13124 transitions. [2018-07-21 16:19:05,659 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 13124 transitions. Word has length 137 [2018-07-21 16:19:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:19:05,660 INFO L471 AbstractCegarLoop]: Abstraction has 7885 states and 13124 transitions. [2018-07-21 16:19:05,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 16:19:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 13124 transitions. [2018-07-21 16:19:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-21 16:19:05,670 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:19:05,670 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:05,670 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 16:19:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1379930453, now seen corresponding path program 1 times [2018-07-21 16:19:05,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:19:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:19:05,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:19:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:19:05,673 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:19:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:19:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:19:06,292 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:19:06,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 16:19:06,293 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:19:06,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 16:19:06,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 16:19:06,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 16:19:06,295 INFO L87 Difference]: Start difference. First operand 7885 states and 13124 transitions. Second operand 6 states. [2018-07-21 16:19:13,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:19:13,499 INFO L93 Difference]: Finished difference Result 27574 states and 47726 transitions. [2018-07-21 16:19:13,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 16:19:13,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-07-21 16:19:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:19:13,619 INFO L225 Difference]: With dead ends: 27574 [2018-07-21 16:19:13,620 INFO L226 Difference]: Without dead ends: 19695 [2018-07-21 16:19:13,675 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 16:19:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19695 states. [2018-07-21 16:19:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19695 to 19593. [2018-07-21 16:19:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19593 states. [2018-07-21 16:19:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19593 states to 19593 states and 30122 transitions. [2018-07-21 16:19:14,216 INFO L78 Accepts]: Start accepts. Automaton has 19593 states and 30122 transitions. Word has length 164 [2018-07-21 16:19:14,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:19:14,217 INFO L471 AbstractCegarLoop]: Abstraction has 19593 states and 30122 transitions. [2018-07-21 16:19:14,217 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 16:19:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 19593 states and 30122 transitions. [2018-07-21 16:19:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-21 16:19:14,238 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:19:14,238 INFO L358 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:14,238 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 16:19:14,239 INFO L82 PathProgramCache]: Analyzing trace with hash -994733992, now seen corresponding path program 1 times [2018-07-21 16:19:14,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:19:14,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:19:14,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:19:14,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:19:14,242 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:19:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:19:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:19:14,783 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 16:19:14,783 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 16:19:14,784 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-07-21 16:19:14,786 INFO L201 CegarAbsIntRunner]: [0], [1], [987], [991], [997], [1001], [1003], [1892], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2279], [2281], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2364], [2372], [2380], [2385], [2389], [2393], [2397], [2401], [2405], [2408], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3264], [3267], [3268], [3269], [3271], [3272] [2018-07-21 16:19:14,871 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 16:19:14,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 16:19:28,996 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 16:19:36,617 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 16:19:36,619 INFO L272 AbstractInterpreter]: Visited 111 different actions 218 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 16:19:36,669 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 16:19:41,409 INFO L232 lantSequenceWeakener]: Weakened 238 states. On average, predicates are now at 75.83% of their original sizes. [2018-07-21 16:19:41,410 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 16:19:45,001 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 16:19:45,001 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 16:19:45,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-21 16:19:45,002 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:19:45,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-21 16:19:45,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-21 16:19:45,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-07-21 16:19:45,003 INFO L87 Difference]: Start difference. First operand 19593 states and 30122 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown