java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 08:08:20,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 08:08:21,004 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 08:08:21,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 08:08:21,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 08:08:21,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 08:08:21,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 08:08:21,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 08:08:21,032 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 08:08:21,033 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 08:08:21,034 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 08:08:21,034 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 08:08:21,035 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 08:08:21,036 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 08:08:21,037 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 08:08:21,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 08:08:21,038 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 08:08:21,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 08:08:21,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 08:08:21,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 08:08:21,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 08:08:21,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 08:08:21,057 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 08:08:21,069 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 08:08:21,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 08:08:21,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 08:08:21,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 08:08:21,091 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 08:08:21,091 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 08:08:21,091 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 08:08:21,092 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 08:08:21,093 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 08:08:21,093 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 08:08:21,094 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 08:08:21,094 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 08:08:21,094 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 08:08:21,094 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 08:08:21,094 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 08:08:21,095 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 08:08:21,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 08:08:21,095 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 08:08:21,095 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 08:08:21,095 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 08:08:21,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 08:08:21,096 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 08:08:21,096 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 08:08:21,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 08:08:21,096 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 08:08:21,096 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 08:08:21,098 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 08:08:21,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 08:08:21,099 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 08:08:21,099 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 08:08:21,099 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 08:08:21,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 08:08:21,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 08:08:21,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 08:08:21,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 08:08:21,177 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 08:08:21,178 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-07-21 08:08:21,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d8794058b/dc717129ed964546a0690d5534954eb9/FLAG37232340e [2018-07-21 08:08:21,862 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 08:08:21,863 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-07-21 08:08:21,900 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d8794058b/dc717129ed964546a0690d5534954eb9/FLAG37232340e [2018-07-21 08:08:21,929 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d8794058b/dc717129ed964546a0690d5534954eb9 [2018-07-21 08:08:21,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 08:08:21,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 08:08:21,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 08:08:21,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 08:08:21,962 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 08:08:21,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:21" (1/1) ... [2018-07-21 08:08:21,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708af1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:21, skipping insertion in model container [2018-07-21 08:08:21,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:21" (1/1) ... [2018-07-21 08:08:22,184 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 08:08:22,445 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 08:08:22,464 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 08:08:22,643 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 08:08:22,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22 WrapperNode [2018-07-21 08:08:22,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 08:08:22,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 08:08:22,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 08:08:22,697 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 08:08:22,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 08:08:22,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 08:08:22,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 08:08:22,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 08:08:22,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2018-07-21 08:08:22,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 08:08:22,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 08:08:22,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 08:08:22,882 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 08:08:22,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 08:08:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 08:08:23,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 08:08:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 08:08:23,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 08:08:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 08:08:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 08:08:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 08:08:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 08:08:26,524 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 08:08:26,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:26 BoogieIcfgContainer [2018-07-21 08:08:26,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 08:08:26,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 08:08:26,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 08:08:26,530 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 08:08:26,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:08:21" (1/3) ... [2018-07-21 08:08:26,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b04b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:26, skipping insertion in model container [2018-07-21 08:08:26,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (2/3) ... [2018-07-21 08:08:26,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b04b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:26, skipping insertion in model container [2018-07-21 08:08:26,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:26" (3/3) ... [2018-07-21 08:08:26,534 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label42_true-unreach-call_false-termination.c [2018-07-21 08:08:26,545 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 08:08:26,554 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 08:08:26,610 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 08:08:26,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 08:08:26,611 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 08:08:26,611 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 08:08:26,611 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 08:08:26,611 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 08:08:26,611 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 08:08:26,611 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 08:08:26,612 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 08:08:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-07-21 08:08:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-21 08:08:26,652 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:08:26,653 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 08:08:26,653 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:08:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1675819633, now seen corresponding path program 1 times [2018-07-21 08:08:26,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:08:26,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:26,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:08:26,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:26,702 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:08:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:08:27,313 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 08:08:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:08:27,444 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:08:27,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 08:08:27,445 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:08:27,449 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 08:08:27,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 08:08:27,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:08:27,470 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-07-21 08:08:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:08:28,798 INFO L93 Difference]: Finished difference Result 626 states and 1068 transitions. [2018-07-21 08:08:28,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 08:08:28,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2018-07-21 08:08:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:08:28,831 INFO L225 Difference]: With dead ends: 626 [2018-07-21 08:08:28,832 INFO L226 Difference]: Without dead ends: 387 [2018-07-21 08:08:28,839 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:08:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-21 08:08:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-21 08:08:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-21 08:08:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 644 transitions. [2018-07-21 08:08:28,930 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 644 transitions. Word has length 107 [2018-07-21 08:08:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:08:28,931 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 644 transitions. [2018-07-21 08:08:28,931 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 08:08:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 644 transitions. [2018-07-21 08:08:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-21 08:08:28,940 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:08:28,940 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 08:08:28,941 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:08:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1967925320, now seen corresponding path program 1 times [2018-07-21 08:08:28,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:08:28,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:28,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:08:28,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:28,943 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:08:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:08:29,178 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 08:08:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:08:29,208 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:08:29,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 08:08:29,209 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:08:29,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 08:08:29,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 08:08:29,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 08:08:29,212 INFO L87 Difference]: Start difference. First operand 383 states and 644 transitions. Second operand 6 states. [2018-07-21 08:08:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:08:30,816 INFO L93 Difference]: Finished difference Result 1195 states and 2114 transitions. [2018-07-21 08:08:30,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 08:08:30,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-07-21 08:08:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:08:30,826 INFO L225 Difference]: With dead ends: 1195 [2018-07-21 08:08:30,827 INFO L226 Difference]: Without dead ends: 818 [2018-07-21 08:08:30,833 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 08:08:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-07-21 08:08:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 799. [2018-07-21 08:08:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2018-07-21 08:08:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1290 transitions. [2018-07-21 08:08:30,896 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1290 transitions. Word has length 128 [2018-07-21 08:08:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:08:30,896 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1290 transitions. [2018-07-21 08:08:30,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 08:08:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1290 transitions. [2018-07-21 08:08:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-21 08:08:30,904 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:08:30,904 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 08:08:30,904 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:08:30,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1660033244, now seen corresponding path program 1 times [2018-07-21 08:08:30,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:08:30,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:30,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:08:30,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:30,906 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:08:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:08:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 08:08:31,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 08:08:31,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 08:08:31,086 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:08:31,087 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 08:08:31,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 08:08:31,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:08:31,087 INFO L87 Difference]: Start difference. First operand 799 states and 1290 transitions. Second operand 3 states. [2018-07-21 08:08:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:08:34,123 INFO L93 Difference]: Finished difference Result 2287 states and 3807 transitions. [2018-07-21 08:08:34,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 08:08:34,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-07-21 08:08:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:08:34,170 INFO L225 Difference]: With dead ends: 2287 [2018-07-21 08:08:34,171 INFO L226 Difference]: Without dead ends: 1494 [2018-07-21 08:08:34,176 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 08:08:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2018-07-21 08:08:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1490. [2018-07-21 08:08:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2018-07-21 08:08:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2299 transitions. [2018-07-21 08:08:34,291 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2299 transitions. Word has length 129 [2018-07-21 08:08:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:08:34,292 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 2299 transitions. [2018-07-21 08:08:34,292 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 08:08:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2299 transitions. [2018-07-21 08:08:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-21 08:08:34,303 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:08:34,304 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 08:08:34,305 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:08:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1710222036, now seen corresponding path program 1 times [2018-07-21 08:08:34,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:08:34,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:34,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:08:34,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:08:34,308 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:08:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:08:34,601 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 08:08:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-21 08:08:34,642 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 08:08:34,642 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 08:08:34,644 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-07-21 08:08:34,646 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [182], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 08:08:34,708 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 08:08:34,709 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 08:08:45,942 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 08:08:45,944 INFO L272 AbstractInterpreter]: Visited 63 different actions 63 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-07-21 08:08:45,980 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 08:08:52,960 INFO L232 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 80.48% of their original sizes. [2018-07-21 08:08:52,960 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 08:08:54,434 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 08:08:54,435 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 08:08:54,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-07-21 08:08:54,435 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:08:54,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-21 08:08:54,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-21 08:08:54,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-21 08:08:54,439 INFO L87 Difference]: Start difference. First operand 1490 states and 2299 transitions. Second operand 12 states. [2018-07-21 08:09:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:09:22,869 INFO L93 Difference]: Finished difference Result 3032 states and 4692 transitions. [2018-07-21 08:09:22,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-21 08:09:22,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 164 [2018-07-21 08:09:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:09:22,880 INFO L225 Difference]: With dead ends: 3032 [2018-07-21 08:09:22,881 INFO L226 Difference]: Without dead ends: 1548 [2018-07-21 08:09:22,888 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-07-21 08:09:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2018-07-21 08:09:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2018-07-21 08:09:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2018-07-21 08:09:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2367 transitions. [2018-07-21 08:09:22,961 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2367 transitions. Word has length 164 [2018-07-21 08:09:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:09:22,961 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2367 transitions. [2018-07-21 08:09:22,961 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-21 08:09:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2367 transitions. [2018-07-21 08:09:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-21 08:09:22,969 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 08:09:22,969 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 08:09:22,969 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 08:09:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1508506677, now seen corresponding path program 1 times [2018-07-21 08:09:22,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 08:09:22,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:09:22,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 08:09:22,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 08:09:22,971 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 08:09:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 08:09:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 64 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 08:09:23,183 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 08:09:23,183 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 08:09:23,183 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-07-21 08:09:23,184 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [182], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-07-21 08:09:23,190 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 08:09:23,191 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 08:10:57,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 08:10:57,252 INFO L272 AbstractInterpreter]: Visited 112 different actions 285 times. Merged at 7 different actions 16 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-07-21 08:10:57,258 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 08:11:09,692 INFO L232 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 80.9% of their original sizes. [2018-07-21 08:11:09,693 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 08:11:27,188 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 08:11:27,189 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 08:11:27,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [9] total 32 [2018-07-21 08:11:27,189 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 08:11:27,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-21 08:11:27,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-21 08:11:27,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2018-07-21 08:11:27,190 INFO L87 Difference]: Start difference. First operand 1548 states and 2367 transitions. Second operand 25 states. [2018-07-21 08:12:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 08:12:23,131 INFO L93 Difference]: Finished difference Result 3709 states and 5793 transitions. [2018-07-21 08:12:23,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-21 08:12:23,131 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 174 [2018-07-21 08:12:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 08:12:23,132 INFO L225 Difference]: With dead ends: 3709 [2018-07-21 08:12:23,132 INFO L226 Difference]: Without dead ends: 0 [2018-07-21 08:12:23,145 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 237 GetRequests, 119 SyntacticMatches, 31 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2721 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1557, Invalid=6275, Unknown=0, NotChecked=0, Total=7832 [2018-07-21 08:12:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-21 08:12:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-21 08:12:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-21 08:12:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-21 08:12:23,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2018-07-21 08:12:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 08:12:23,146 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-21 08:12:23,146 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-21 08:12:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-21 08:12:23,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-21 08:12:23,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-21 08:12:23,792 WARN L169 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 317 [2018-07-21 08:12:24,307 WARN L169 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 484 DAG size of output: 313 [2018-07-21 08:12:24,676 WARN L169 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 358 [2018-07-21 08:12:24,830 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 246 [2018-07-21 08:12:24,939 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 227 [2018-07-21 08:12:25,051 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 Received shutdown request... [2018-07-21 08:12:26,520 WARN L177 SmtUtils]: Removed 2 from assertion stack [2018-07-21 08:12:26,520 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-21 08:12:26,522 INFO L168 Benchmark]: Toolchain (without parser) took 244579.52 ms. Allocated memory was 308.3 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 252.7 MB in the beginning and 1.0 GB in the end (delta: -794.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,523 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 308.3 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 08:12:26,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.91 ms. Allocated memory is still 308.3 MB. Free memory was 251.7 MB in the beginning and 220.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.05 ms. Allocated memory is still 308.3 MB. Free memory was 220.8 MB in the beginning and 214.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,527 INFO L168 Benchmark]: Boogie Preprocessor took 80.83 ms. Allocated memory is still 308.3 MB. Free memory was 214.7 MB in the beginning and 210.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,527 INFO L168 Benchmark]: RCFGBuilder took 3643.38 ms. Allocated memory was 308.3 MB in the beginning and 477.6 MB in the end (delta: 169.3 MB). Free memory was 209.7 MB in the beginning and 332.5 MB in the end (delta: -122.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,528 INFO L168 Benchmark]: TraceAbstraction took 239994.77 ms. Allocated memory was 477.6 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 332.5 MB in the beginning and 1.0 GB in the end (delta: -714.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-07-21 08:12:26,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 308.3 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 744.91 ms. Allocated memory is still 308.3 MB. Free memory was 251.7 MB in the beginning and 220.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 104.05 ms. Allocated memory is still 308.3 MB. Free memory was 220.8 MB in the beginning and 214.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 80.83 ms. Allocated memory is still 308.3 MB. Free memory was 214.7 MB in the beginning and 210.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 3643.38 ms. Allocated memory was 308.3 MB in the beginning and 477.6 MB in the end (delta: 169.3 MB). Free memory was 209.7 MB in the beginning and 332.5 MB in the end (delta: -122.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 239994.77 ms. Allocated memory was 477.6 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 332.5 MB in the beginning and 1.0 GB in the end (delta: -714.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 472]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 507. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem02_label42_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_08-12-26-550.csv Completed graceful shutdown