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/Problem17_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 05:05:43,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 05:05:43,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 05:05:43,740 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 05:05:43,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 05:05:43,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 05:05:43,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 05:05:43,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 05:05:43,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 05:05:43,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 05:05:43,748 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 05:05:43,749 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 05:05:43,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 05:05:43,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 05:05:43,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 05:05:43,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 05:05:43,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 05:05:43,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 05:05:43,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 05:05:43,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 05:05:43,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 05:05:43,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 05:05:43,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 05:05:43,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 05:05:43,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 05:05:43,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 05:05:43,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 05:05:43,794 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 05:05:43,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 05:05:43,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 05:05:43,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 05:05:43,827 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 05:05:43,827 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 05:05:43,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 05:05:43,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 05:05:43,828 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 05:05:43,828 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 05:05:43,828 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 05:05:43,828 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 05:05:43,829 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 05:05:43,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 05:05:43,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 05:05:43,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 05:05:43,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 05:05:43,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 05:05:43,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 05:05:43,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 05:05:43,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 05:05:43,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 05:05:43,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 05:05:43,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 05:05:43,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 05:05:43,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 05:05:43,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 05:05:43,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 05:05:43,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 05:05:43,915 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 05:05:43,915 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 05:05:43,916 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13_false-unreach-call.c [2018-07-21 05:05:44,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7ecc6a2c3/6a6df8f418c5421d8d027e0818470a4b/FLAG79f093bdc [2018-07-21 05:05:44,922 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 05:05:44,923 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label13_false-unreach-call.c [2018-07-21 05:05:44,989 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7ecc6a2c3/6a6df8f418c5421d8d027e0818470a4b/FLAG79f093bdc [2018-07-21 05:05:45,045 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7ecc6a2c3/6a6df8f418c5421d8d027e0818470a4b [2018-07-21 05:05:45,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 05:05:45,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 05:05:45,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 05:05:45,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 05:05:45,079 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 05:05:45,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:05:45" (1/1) ... [2018-07-21 05:05:45,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:45, skipping insertion in model container [2018-07-21 05:05:45,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:05:45" (1/1) ... [2018-07-21 05:05:45,411 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 05:05:46,348 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 05:05:46,368 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 05:05:46,869 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 05:05:47,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47 WrapperNode [2018-07-21 05:05:47,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 05:05:47,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 05:05:47,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 05:05:47,188 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 05:05:47,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:47,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:47,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 05:05:47,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 05:05:47,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 05:05:47,644 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 05:05:47,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:47,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:47,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:47,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:48,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:48,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:48,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (1/1) ... [2018-07-21 05:05:48,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 05:05:48,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 05:05:48,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 05:05:48,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 05:05:48,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (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 05:05:48,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 05:05:48,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 05:05:48,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 05:05:48,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 05:05:48,663 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 05:05:48,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 05:05:48,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 05:05:48,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 05:05:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 05:05:48,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 05:06:03,332 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 05:06:03,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:06:03 BoogieIcfgContainer [2018-07-21 05:06:03,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 05:06:03,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 05:06:03,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 05:06:03,339 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 05:06:03,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:05:45" (1/3) ... [2018-07-21 05:06:03,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2d4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:06:03, skipping insertion in model container [2018-07-21 05:06:03,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:05:47" (2/3) ... [2018-07-21 05:06:03,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2d4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:06:03, skipping insertion in model container [2018-07-21 05:06:03,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:06:03" (3/3) ... [2018-07-21 05:06:03,343 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13_false-unreach-call.c [2018-07-21 05:06:03,351 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 05:06:03,362 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 05:06:03,418 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 05:06:03,419 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 05:06:03,419 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 05:06:03,419 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 05:06:03,419 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 05:06:03,420 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 05:06:03,420 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 05:06:03,420 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 05:06:03,420 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 05:06:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-21 05:06:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-21 05:06:03,466 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:06:03,471 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] [2018-07-21 05:06:03,472 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:06:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -802448250, now seen corresponding path program 1 times [2018-07-21 05:06:03,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:06:03,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:06:03,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:06:03,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:06:03,534 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:06:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:06:04,026 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 05:06:04,029 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 05:06:04,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 05:06:04,030 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:06:04,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 05:06:04,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 05:06:04,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 05:06:04,056 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-21 05:06:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 05:06:12,546 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-07-21 05:06:12,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 05:06:12,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-07-21 05:06:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 05:06:12,578 INFO L225 Difference]: With dead ends: 2139 [2018-07-21 05:06:12,578 INFO L226 Difference]: Without dead ends: 1529 [2018-07-21 05:06:12,588 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 05:06:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-07-21 05:06:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-07-21 05:06:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-07-21 05:06:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-07-21 05:06:12,770 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 37 [2018-07-21 05:06:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 05:06:12,772 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-07-21 05:06:12,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 05:06:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-07-21 05:06:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-21 05:06:12,789 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:06:12,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:12,790 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:06:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash 405531481, now seen corresponding path program 1 times [2018-07-21 05:06:12,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:06:12,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:06:12,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:06:12,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:06:12,792 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:06:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:06:13,649 WARN L169 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-07-21 05:06:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:06:13,846 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 05:06:13,846 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 05:06:13,847 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2018-07-21 05:06:13,849 INFO L201 CegarAbsIntRunner]: [0], [1], [714], [718], [724], [728], [730], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [930], [932], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 05:06:13,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 05:06:13,925 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 05:06:20,277 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 05:06:36,672 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 05:06:36,674 INFO L272 AbstractInterpreter]: Visited 82 different actions 233 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 05:06:36,805 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 05:06:45,486 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 75.8% of their original sizes. [2018-07-21 05:06:45,487 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 05:07:13,625 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 05:07:13,625 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 05:07:13,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [48] imperfect sequences [7] total 53 [2018-07-21 05:07:13,626 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:07:13,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-21 05:07:13,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-21 05:07:13,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=836, Invalid=1420, Unknown=0, NotChecked=0, Total=2256 [2018-07-21 05:07:13,632 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 48 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown