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/Problem10_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:23:43,608 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:23:43,613 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:23:43,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:23:43,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:23:43,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:23:43,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:23:43,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:23:43,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:23:43,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:23:43,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:23:43,637 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:23:43,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:23:43,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:23:43,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:23:43,641 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:23:43,642 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:23:43,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:23:43,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:23:43,648 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:23:43,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:23:43,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:23:43,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:23:43,663 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 [2018-10-27 02:23:43,678 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:23:43,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:23:43,680 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:23:43,680 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:23:43,680 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:23:43,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:23:43,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:23:43,681 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:23:43,681 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:23:43,681 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:23:43,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:23:43,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:23:43,682 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:23:43,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:23:43,683 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:23:43,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:23:43,683 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:23:43,683 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:23:43,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:23:43,685 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:23:43,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:23:43,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:23:43,686 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:23:43,686 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:23:43,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:23:43,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:23:43,687 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:23:43,687 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:23:43,687 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:23:43,688 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:23:43,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:23:43,688 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:23:43,688 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:23:43,688 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:23:43,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:23:43,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:23:43,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:23:43,766 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:23:43,766 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:23:43,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34_true-unreach-call.c [2018-10-27 02:23:43,822 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1cec7c132/380ce75459e943acae2e963434989351/FLAG58192614e [2018-10-27 02:23:44,456 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:23:44,457 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label34_true-unreach-call.c [2018-10-27 02:23:44,473 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1cec7c132/380ce75459e943acae2e963434989351/FLAG58192614e [2018-10-27 02:23:44,490 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1cec7c132/380ce75459e943acae2e963434989351 [2018-10-27 02:23:44,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:23:44,503 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:23:44,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:23:44,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:23:44,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:23:44,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:23:44" (1/1) ... [2018-10-27 02:23:44,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:44, skipping insertion in model container [2018-10-27 02:23:44,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:23:44" (1/1) ... [2018-10-27 02:23:44,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:23:44,597 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:23:45,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:23:45,134 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:23:45,227 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:23:45,260 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:23:45,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45 WrapperNode [2018-10-27 02:23:45,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:23:45,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:23:45,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:23:45,262 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:23:45,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:23:45,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:23:45,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:23:45,477 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:23:45,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (1/1) ... [2018-10-27 02:23:45,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:23:45,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:23:45,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:23:45,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:23:45,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (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 [2018-10-27 02:23:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:23:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:23:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:23:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:23:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:23:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:23:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:23:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:23:49,305 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:23:49,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:23:49 BoogieIcfgContainer [2018-10-27 02:23:49,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:23:49,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:23:49,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:23:49,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:23:49,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:23:44" (1/3) ... [2018-10-27 02:23:49,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d071a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:23:49, skipping insertion in model container [2018-10-27 02:23:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:23:45" (2/3) ... [2018-10-27 02:23:49,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d071a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:23:49, skipping insertion in model container [2018-10-27 02:23:49,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:23:49" (3/3) ... [2018-10-27 02:23:49,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label34_true-unreach-call.c [2018-10-27 02:23:49,334 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:23:49,348 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:23:49,366 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:23:49,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:23:49,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:23:49,405 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:23:49,405 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:23:49,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:23:49,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:23:49,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:23:49,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:23:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 02:23:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 02:23:49,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:23:49,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:23:49,450 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:23:49,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:23:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash 427988964, now seen corresponding path program 1 times [2018-10-27 02:23:49,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:23:49,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:49,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:23:49,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:49,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:23:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:23:50,020 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:23:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:23:50,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:23:50,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:23:50,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:23:50,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:23:50,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:23:50,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:23:50,084 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-27 02:23:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:23:52,916 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-27 02:23:52,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:23:52,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-10-27 02:23:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:23:52,945 INFO L225 Difference]: With dead ends: 737 [2018-10-27 02:23:52,945 INFO L226 Difference]: Without dead ends: 515 [2018-10-27 02:23:52,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:23:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-27 02:23:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-27 02:23:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-27 02:23:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-27 02:23:53,055 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 70 [2018-10-27 02:23:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:23:53,056 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-27 02:23:53,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:23:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-27 02:23:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 02:23:53,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:23:53,068 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, 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] [2018-10-27 02:23:53,069 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:23:53,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:23:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 453720075, now seen corresponding path program 1 times [2018-10-27 02:23:53,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:23:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:53,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:23:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:53,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:23:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:23:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:23:53,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:23:53,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:23:53,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:23:53,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:23:53,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:23:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:23:53,489 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-27 02:23:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:23:56,560 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-27 02:23:56,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:23:56,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 02:23:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:23:56,576 INFO L225 Difference]: With dead ends: 1863 [2018-10-27 02:23:56,577 INFO L226 Difference]: Without dead ends: 1354 [2018-10-27 02:23:56,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:23:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-27 02:23:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-27 02:23:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-27 02:23:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-27 02:23:56,673 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 145 [2018-10-27 02:23:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:23:56,674 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-27 02:23:56,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:23:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-27 02:23:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 02:23:56,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:23:56,688 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:23:56,689 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:23:56,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:23:56,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1203594976, now seen corresponding path program 1 times [2018-10-27 02:23:56,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:23:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:56,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:23:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:23:56,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:23:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:23:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:23:57,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:23:57,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:23:57,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:23:57,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:23:57,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:23:57,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:23:57,054 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-27 02:24:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:24:00,405 INFO L93 Difference]: Finished difference Result 3539 states and 5767 transitions. [2018-10-27 02:24:00,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:24:00,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-27 02:24:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:24:00,436 INFO L225 Difference]: With dead ends: 3539 [2018-10-27 02:24:00,436 INFO L226 Difference]: Without dead ends: 2214 [2018-10-27 02:24:00,452 INFO L605 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 [2018-10-27 02:24:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2018-10-27 02:24:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2179. [2018-10-27 02:24:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2018-10-27 02:24:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3196 transitions. [2018-10-27 02:24:00,540 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3196 transitions. Word has length 178 [2018-10-27 02:24:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:24:00,541 INFO L481 AbstractCegarLoop]: Abstraction has 2179 states and 3196 transitions. [2018-10-27 02:24:00,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:24:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3196 transitions. [2018-10-27 02:24:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-27 02:24:00,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:24:00,559 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:24:00,559 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:24:00,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:24:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash -932170556, now seen corresponding path program 1 times [2018-10-27 02:24:00,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:24:00,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:24:00,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:24:00,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:24:00,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:24:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:24:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-27 02:24:01,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:24:01,004 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:24:01,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-27 02:24:01,007 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], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:24:01,088 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:24:01,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:24:04,950 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:24:04,952 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 02:24:04,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:24:04,965 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:24:10,534 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 73.9% of their original sizes. [2018-10-27 02:24:10,535 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:24:18,482 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-10-27 02:24:18,482 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:24:18,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:24:18,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 02:24:18,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:24:18,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 02:24:18,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 02:24:18,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 02:24:18,486 INFO L87 Difference]: Start difference. First operand 2179 states and 3196 transitions. Second operand 10 states. [2018-10-27 02:24:31,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:25:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:25:08,908 INFO L93 Difference]: Finished difference Result 4501 states and 6622 transitions. [2018-10-27 02:25:08,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 02:25:08,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2018-10-27 02:25:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:25:08,923 INFO L225 Difference]: With dead ends: 4501 [2018-10-27 02:25:08,924 INFO L226 Difference]: Without dead ends: 2328 [2018-10-27 02:25:08,933 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 269 GetRequests, 203 SyntacticMatches, 54 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-27 02:25:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2018-10-27 02:25:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2323. [2018-10-27 02:25:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-10-27 02:25:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3348 transitions. [2018-10-27 02:25:09,032 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3348 transitions. Word has length 266 [2018-10-27 02:25:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:25:09,033 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3348 transitions. [2018-10-27 02:25:09,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 02:25:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3348 transitions. [2018-10-27 02:25:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 02:25:09,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:25:09,050 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:25:09,051 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:25:09,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:25:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash 238222643, now seen corresponding path program 1 times [2018-10-27 02:25:09,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:25:09,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:25:09,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:25:09,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:25:09,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:25:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:25:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 263 proven. 87 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 02:25:10,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:25:10,122 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:25:10,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 02:25:10,123 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], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:25:10,130 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:25:10,130 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:25:11,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:25:21,857 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:25:21,857 INFO L272 AbstractInterpreter]: Visited 117 different actions 450 times. Merged at 5 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 02:25:21,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:25:21,863 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:25:25,008 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 75.67% of their original sizes. [2018-10-27 02:25:25,008 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:25:41,099 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-27 02:25:41,100 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:25:41,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:25:41,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 33 [2018-10-27 02:25:41,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:25:41,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 02:25:41,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 02:25:41,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-10-27 02:25:41,102 INFO L87 Difference]: Start difference. First operand 2323 states and 3348 transitions. Second operand 21 states. Received shutdown request... [2018-10-27 02:27:27,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 02:27:27,360 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:27:27,365 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:27:27,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:27:27 BoogieIcfgContainer [2018-10-27 02:27:27,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:27:27,366 INFO L168 Benchmark]: Toolchain (without parser) took 222864.19 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 436.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:27:27,367 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-27 02:27:27,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:27:27,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 214.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-27 02:27:27,370 INFO L168 Benchmark]: Boogie Preprocessor took 94.01 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:27:27,371 INFO L168 Benchmark]: RCFGBuilder took 3737.88 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:27:27,371 INFO L168 Benchmark]: TraceAbstraction took 218053.25 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 363.5 MB. Max. memory is 7.1 GB. [2018-10-27 02:27:27,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 756.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 214.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.01 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3737.88 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218053.25 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 363.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (2323states) and FLOYD_HOARE automaton (currently 26 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (813 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 217.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 166.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 612 SDtfs, 3617 SDslu, 621 SDs, 0 SdLazy, 4856 SolverSat, 944 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 642 GetRequests, 510 SyntacticMatches, 74 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995933709517953 AbsIntWeakeningRatio, 0.09650582362728785 AbsIntAvgWeakeningVarsNumRemoved, 426.4459234608985 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 996 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 1625233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 554/759 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown