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/Problem16_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 18:50:05,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 18:50:05,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 18:50:05,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 18:50:05,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 18:50:05,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 18:50:05,058 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 18:50:05,063 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 18:50:05,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 18:50:05,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 18:50:05,068 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 18:50:05,068 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 18:50:05,069 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 18:50:05,073 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 18:50:05,075 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 18:50:05,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 18:50:05,076 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 18:50:05,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 18:50:05,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 18:50:05,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 18:50:05,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 18:50:05,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 18:50:05,101 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 18:50:05,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 18:50:05,111 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 18:50:05,116 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 18:50:05,116 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 18:50:05,117 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 18:50:05,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 18:50:05,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 18:50:05,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 18:50:05,137 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 18:50:05,137 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 18:50:05,137 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 18:50:05,137 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 18:50:05,137 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 18:50:05,138 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 18:50:05,138 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 18:50:05,138 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 18:50:05,138 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 18:50:05,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 18:50:05,139 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 18:50:05,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 18:50:05,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 18:50:05,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 18:50:05,140 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 18:50:05,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 18:50:05,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 18:50:05,140 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 18:50:05,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 18:50:05,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 18:50:05,141 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 18:50:05,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 18:50:05,141 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 18:50:05,141 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 18:50:05,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 18:50:05,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 18:50:05,142 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 18:50:05,142 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 18:50:05,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 18:50:05,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 18:50:05,143 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 18:50:05,143 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 18:50:05,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 18:50:05,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 18:50:05,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 18:50:05,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 18:50:05,218 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 18:50:05,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-07-21 18:50:05,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd3812e/7a24520454bd46309199aa66ebd69699/FLAGa7cc40243 [2018-07-21 18:50:06,032 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 18:50:06,033 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-07-21 18:50:06,087 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd3812e/7a24520454bd46309199aa66ebd69699/FLAGa7cc40243 [2018-07-21 18:50:06,108 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd3812e/7a24520454bd46309199aa66ebd69699 [2018-07-21 18:50:06,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 18:50:06,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 18:50:06,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 18:50:06,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 18:50:06,133 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 18:50:06,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:50:06" (1/1) ... [2018-07-21 18:50:06,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18723aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:06, skipping insertion in model container [2018-07-21 18:50:06,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:50:06" (1/1) ... [2018-07-21 18:50:06,381 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 18:50:06,955 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 18:50:06,975 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 18:50:07,362 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 18:50:07,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07 WrapperNode [2018-07-21 18:50:07,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 18:50:07,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 18:50:07,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 18:50:07,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 18:50:07,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 18:50:07,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 18:50:07,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 18:50:07,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 18:50:07,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:07,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:08,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:08,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (1/1) ... [2018-07-21 18:50:08,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 18:50:08,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 18:50:08,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 18:50:08,190 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 18:50:08,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (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 18:50:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 18:50:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 18:50:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 18:50:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 18:50:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 18:50:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 18:50:08,260 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 18:50:08,260 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 18:50:08,260 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 18:50:08,261 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 18:50:14,645 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 18:50:14,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:50:14 BoogieIcfgContainer [2018-07-21 18:50:14,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 18:50:14,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 18:50:14,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 18:50:14,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 18:50:14,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:50:06" (1/3) ... [2018-07-21 18:50:14,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a13347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:50:14, skipping insertion in model container [2018-07-21 18:50:14,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:50:07" (2/3) ... [2018-07-21 18:50:14,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a13347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:50:14, skipping insertion in model container [2018-07-21 18:50:14,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:50:14" (3/3) ... [2018-07-21 18:50:14,654 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label10_true-unreach-call.c [2018-07-21 18:50:14,664 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 18:50:14,673 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 18:50:14,733 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 18:50:14,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 18:50:14,734 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 18:50:14,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 18:50:14,734 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 18:50:14,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 18:50:14,735 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 18:50:14,735 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 18:50:14,735 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 18:50:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-21 18:50:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-21 18:50:14,777 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:50:14,778 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] [2018-07-21 18:50:14,779 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 18:50:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1208445243, now seen corresponding path program 1 times [2018-07-21 18:50:14,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:50:14,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:14,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:50:14,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:14,828 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:50:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:50:15,231 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 18:50:15,349 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 18:50:15,352 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 18:50:15,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 18:50:15,353 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:50:15,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 18:50:15,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 18:50:15,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 18:50:15,377 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-21 18:50:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:50:18,038 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-21 18:50:18,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 18:50:18,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-07-21 18:50:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:50:18,065 INFO L225 Difference]: With dead ends: 1156 [2018-07-21 18:50:18,066 INFO L226 Difference]: Without dead ends: 744 [2018-07-21 18:50:18,074 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 18:50:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-21 18:50:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-21 18:50:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-21 18:50:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-07-21 18:50:18,228 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 39 [2018-07-21 18:50:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:50:18,229 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-07-21 18:50:18,229 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 18:50:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-07-21 18:50:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-21 18:50:18,236 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:50:18,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:18,236 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 18:50:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 508345392, now seen corresponding path program 1 times [2018-07-21 18:50:18,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:50:18,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:18,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:50:18,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:18,238 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:50:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:50:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 18:50:18,482 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 18:50:18,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 18:50:18,482 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:50:18,485 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 18:50:18,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 18:50:18,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 18:50:18,486 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-07-21 18:50:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:50:23,056 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-07-21 18:50:23,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 18:50:23,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-07-21 18:50:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:50:23,070 INFO L225 Difference]: With dead ends: 2189 [2018-07-21 18:50:23,070 INFO L226 Difference]: Without dead ends: 1451 [2018-07-21 18:50:23,074 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 18:50:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-07-21 18:50:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-07-21 18:50:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-07-21 18:50:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-07-21 18:50:23,174 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 111 [2018-07-21 18:50:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:50:23,175 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-07-21 18:50:23,175 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 18:50:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-07-21 18:50:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-21 18:50:23,187 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:50:23,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:23,188 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 18:50:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1707871129, now seen corresponding path program 1 times [2018-07-21 18:50:23,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:50:23,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:23,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:50:23,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:50:23,190 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:50:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:50:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-21 18:50:23,490 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:50:23,490 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 18:50:23,491 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-07-21 18:50:23,493 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [820], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 18:50:23,564 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 18:50:23,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 18:50:32,617 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 18:50:32,619 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 18:50:32,663 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 18:50:37,971 INFO L232 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 78.08% of their original sizes. [2018-07-21 18:50:37,971 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 18:50:39,363 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 18:50:39,365 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 18:50:39,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2018-07-21 18:50:39,365 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:50:39,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 18:50:39,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 18:50:39,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 18:50:39,366 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 8 states. [2018-07-21 18:50:50,001 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 18:52:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:52:33,142 INFO L93 Difference]: Finished difference Result 3216 states and 5295 transitions. [2018-07-21 18:52:33,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 18:52:33,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2018-07-21 18:52:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:52:33,155 INFO L225 Difference]: With dead ends: 3216 [2018-07-21 18:52:33,156 INFO L226 Difference]: Without dead ends: 1781 [2018-07-21 18:52:33,161 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-21 18:52:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2018-07-21 18:52:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2018-07-21 18:52:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2018-07-21 18:52:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2747 transitions. [2018-07-21 18:52:33,241 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2747 transitions. Word has length 140 [2018-07-21 18:52:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:52:33,241 INFO L471 AbstractCegarLoop]: Abstraction has 1779 states and 2747 transitions. [2018-07-21 18:52:33,242 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-21 18:52:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2747 transitions. [2018-07-21 18:52:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-21 18:52:33,248 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:52:33,248 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, 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, 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] [2018-07-21 18:52:33,249 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 18:52:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1390847324, now seen corresponding path program 1 times [2018-07-21 18:52:33,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:52:33,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:52:33,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:52:33,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:52:33,251 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:52:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:52:33,662 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-21 18:52:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 131 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 18:52:34,118 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:52:34,118 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 18:52:34,118 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-07-21 18:52:34,119 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [784], [785], [789], [793], [797], [801], [805], [809], [813], [817], [820], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 18:52:34,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 18:52:34,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 18:52:39,301 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 18:52:46,364 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 18:52:46,364 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 18:52:46,370 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 18:52:49,451 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.82% of their original sizes. [2018-07-21 18:52:49,451 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 18:52:50,543 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 18:52:50,543 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 18:52:50,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [7] total 24 [2018-07-21 18:52:50,544 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:52:50,544 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-21 18:52:50,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-21 18:52:50,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-07-21 18:52:50,545 INFO L87 Difference]: Start difference. First operand 1779 states and 2747 transitions. Second operand 19 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown