java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:31:46,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:31:46,208 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:31:46,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:31:46,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:31:46,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:31:46,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:31:46,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:31:46,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:31:46,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:31:46,228 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:31:46,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:31:46,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:31:46,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:31:46,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:31:46,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:31:46,233 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:31:46,235 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:31:46,237 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:31:46,239 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:31:46,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:31:46,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:31:46,244 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:31:46,253 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:31:46,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:31:46,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:31:46,270 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:31:46,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:31:46,270 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:31:46,270 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:31:46,271 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:31:46,271 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:31:46,271 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:31:46,271 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:31:46,271 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:31:46,272 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:31:46,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:31:46,273 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:31:46,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:31:46,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:31:46,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:31:46,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:31:46,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:31:46,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:31:46,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:31:46,275 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:31:46,275 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:31:46,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:31:46,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:31:46,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:31:46,276 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:31:46,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:31:46,276 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:31:46,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:31:46,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:31:46,277 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:31:46,277 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:31:46,277 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:31:46,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:31:46,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:31:46,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:31:46,370 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:31:46,370 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:31:46,371 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-10-24 01:31:46,445 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2926dae42/f596148e4b75416292271924e5be9df8/FLAGf20771214 [2018-10-24 01:31:47,114 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:31:47,121 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-10-24 01:31:47,139 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2926dae42/f596148e4b75416292271924e5be9df8/FLAGf20771214 [2018-10-24 01:31:47,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2926dae42/f596148e4b75416292271924e5be9df8 [2018-10-24 01:31:47,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:31:47,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:31:47,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:31:47,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:31:47,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:31:47,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:31:47" (1/1) ... [2018-10-24 01:31:47,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0ce8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:47, skipping insertion in model container [2018-10-24 01:31:47,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:31:47" (1/1) ... [2018-10-24 01:31:47,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:31:47,272 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:31:47,855 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:31:47,860 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:31:47,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:31:48,010 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:31:48,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48 WrapperNode [2018-10-24 01:31:48,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:31:48,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:31:48,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:31:48,012 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:31:48,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:31:48,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:31:48,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:31:48,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:31:48,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... [2018-10-24 01:31:48,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:31:48,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:31:48,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:31:48,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:31:48,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 01:31:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:31:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:31:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:31:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:31:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:31:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:31:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:31:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:31:52,033 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:31:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:31:52 BoogieIcfgContainer [2018-10-24 01:31:52,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:31:52,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:31:52,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:31:52,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:31:52,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:31:47" (1/3) ... [2018-10-24 01:31:52,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:31:52, skipping insertion in model container [2018-10-24 01:31:52,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:31:48" (2/3) ... [2018-10-24 01:31:52,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:31:52, skipping insertion in model container [2018-10-24 01:31:52,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:31:52" (3/3) ... [2018-10-24 01:31:52,044 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label01_true-unreach-call_false-termination.c [2018-10-24 01:31:52,054 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:31:52,062 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:31:52,077 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:31:52,128 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:31:52,130 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:31:52,130 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:31:52,131 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:31:52,131 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:31:52,131 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:31:52,131 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:31:52,131 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:31:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:31:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 01:31:52,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:52,176 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:31:52,179 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:52,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:52,185 INFO L82 PathProgramCache]: Analyzing trace with hash 105664553, now seen corresponding path program 1 times [2018-10-24 01:31:52,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:52,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:52,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:52,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:52,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:52,687 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:31:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:52,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:52,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:31:52,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:52,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:31:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:31:52,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:31:52,748 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:31:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:31:54,502 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:31:54,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:31:54,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-10-24 01:31:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:31:54,527 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:31:54,528 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:31:54,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:31:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:31:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:31:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:31:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-24 01:31:54,643 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 61 [2018-10-24 01:31:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:31:54,644 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-24 01:31:54,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:31:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-24 01:31:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 01:31:54,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:54,654 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:31:54,654 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:54,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:54,655 INFO L82 PathProgramCache]: Analyzing trace with hash -175237717, now seen corresponding path program 1 times [2018-10-24 01:31:54,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:54,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:54,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:54,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:54,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:54,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:54,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:31:54,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:54,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:31:54,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:31:54,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:31:54,948 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-24 01:31:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:31:58,647 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-24 01:31:58,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:31:58,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-24 01:31:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:31:58,664 INFO L225 Difference]: With dead ends: 1416 [2018-10-24 01:31:58,664 INFO L226 Difference]: Without dead ends: 988 [2018-10-24 01:31:58,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:31:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-24 01:31:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-24 01:31:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-24 01:31:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-24 01:31:58,728 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 138 [2018-10-24 01:31:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:31:58,729 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-24 01:31:58,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:31:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-24 01:31:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-24 01:31:58,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:58,738 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:31:58,738 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:58,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash -683828693, now seen corresponding path program 1 times [2018-10-24 01:31:58,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:58,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:58,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:59,161 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:31:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:59,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:59,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:31:59,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:59,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:31:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:31:59,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:31:59,403 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-24 01:32:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:02,593 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-24 01:32:02,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:02,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2018-10-24 01:32:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:02,618 INFO L225 Difference]: With dead ends: 2353 [2018-10-24 01:32:02,618 INFO L226 Difference]: Without dead ends: 1386 [2018-10-24 01:32:02,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:32:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-24 01:32:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-24 01:32:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 01:32:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-24 01:32:02,714 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 202 [2018-10-24 01:32:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:02,714 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-24 01:32:02,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:32:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-24 01:32:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 01:32:02,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:02,723 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:02,723 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:02,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1087026444, now seen corresponding path program 1 times [2018-10-24 01:32:02,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:02,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:02,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:02,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:03,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:32:03,251 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:32:03,252 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-24 01:32:03,256 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:32:03,356 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:32:03,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:32:05,549 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:32:05,552 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:32:05,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:05,595 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:32:07,701 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78.28% of their original sizes. [2018-10-24 01:32:07,702 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:32:08,157 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:32:08,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:32:08,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:32:08,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:08,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:32:08,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:32:08,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:32:08,160 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-24 01:32:10,886 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:32:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:42,649 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-24 01:32:42,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:42,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-24 01:32:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:42,657 INFO L225 Difference]: With dead ends: 2883 [2018-10-24 01:32:42,657 INFO L226 Difference]: Without dead ends: 1537 [2018-10-24 01:32:42,663 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:32:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-24 01:32:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-24 01:32:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-24 01:32:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-24 01:32:42,707 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 222 [2018-10-24 01:32:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:42,708 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-24 01:32:42,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:32:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-24 01:32:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-24 01:32:42,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:42,715 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:42,715 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:42,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash 104267554, now seen corresponding path program 1 times [2018-10-24 01:32:42,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:42,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:42,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:42,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:42,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 249 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:32:43,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:32:43,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:32:43,375 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-24 01:32:43,375 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:32:43,381 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:32:43,381 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:32:46,752 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:32:46,752 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:32:46,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:46,759 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:32:49,731 INFO L232 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 78.23% of their original sizes. [2018-10-24 01:32:49,731 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:33:11,330 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:33:11,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:33:11,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 01:33:11,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:33:11,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:33:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:33:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:33:11,333 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 18 states. [2018-10-24 01:34:25,201 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:35:42,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:35:42,794 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:35:42,799 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:35:42,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:35:42 BoogieIcfgContainer [2018-10-24 01:35:42,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:35:42,801 INFO L168 Benchmark]: Toolchain (without parser) took 235624.69 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 818.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,802 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:35:42,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 262.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 703.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -790.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,804 INFO L168 Benchmark]: Boogie Preprocessor took 139.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,805 INFO L168 Benchmark]: RCFGBuilder took 3619.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.0 MB). Peak memory consumption was 136.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,806 INFO L168 Benchmark]: TraceAbstraction took 230764.16 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 714.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:35:42,811 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 832.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 262.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 703.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -790.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.35 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3619.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.0 MB). Peak memory consumption was 136.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230764.16 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 714.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1880 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 194.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 631 SDtfs, 4776 SDslu, 754 SDs, 0 SdLazy, 6176 SolverSat, 1067 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 558 GetRequests, 493 SyntacticMatches, 23 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 23.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953627313477984 AbsIntWeakeningRatio, 0.11005692599620494 AbsIntAvgWeakeningVarsNumRemoved, 548.5332068311195 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 930 NumberOfCodeBlocks, 930 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 925 ConstructedInterpolants, 0 QuantifiedInterpolants, 1513745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 545/693 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown