java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:55:55,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:55:55,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:55:55,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:55:55,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:55:55,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:55:55,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:55:55,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:55:55,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:55:55,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:55:55,461 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:55:55,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:55:55,464 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:55:55,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:55:55,475 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:55:55,476 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:55:55,477 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:55:55,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:55:55,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:55:55,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:55:55,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:55:55,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:55:55,493 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:55:55,495 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:55:55,495 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:55:55,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:55:55,498 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:55:55,499 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:55:55,500 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:55:55,502 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:55:55,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:55:55,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:55:55,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:55:55,505 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:55:55,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:55:55,506 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:55:55,507 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:55:55,537 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:55:55,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:55:55,538 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:55:55,539 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:55:55,539 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:55:55,539 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:55:55,539 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:55:55,540 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:55:55,540 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:55:55,540 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:55:55,541 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:55:55,541 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:55:55,541 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:55:55,542 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:55:55,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:55:55,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:55:55,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:55:55,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:55:55,544 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:55:55,544 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:55:55,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:55:55,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:55:55,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:55:55,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:55:55,546 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:55:55,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:55:55,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:55:55,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:55:55,547 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:55:55,547 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:55:55,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:55:55,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:55:55,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:55:55,639 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:55:55,640 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:55:55,641 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label25_false-unreach-call.c [2018-11-12 16:55:55,721 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98de8fe9e/f2162220ac574f65a5fb4fec6fafed68/FLAG2aa0e2e69 [2018-11-12 16:55:56,462 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:55:56,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25_false-unreach-call.c [2018-11-12 16:55:56,488 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98de8fe9e/f2162220ac574f65a5fb4fec6fafed68/FLAG2aa0e2e69 [2018-11-12 16:55:56,505 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98de8fe9e/f2162220ac574f65a5fb4fec6fafed68 [2018-11-12 16:55:56,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:55:56,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:55:56,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:55:56,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:55:56,531 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:55:56,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:55:56" (1/1) ... [2018-11-12 16:55:56,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c19753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:56, skipping insertion in model container [2018-11-12 16:55:56,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:55:56" (1/1) ... [2018-11-12 16:55:56,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:55:56,701 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:55:57,749 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:55:57,754 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:55:58,232 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:55:58,265 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:55:58,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58 WrapperNode [2018-11-12 16:55:58,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:55:58,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:55:58,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:55:58,267 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:55:58,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:55:58,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:55:58,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:55:58,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:55:58,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... [2018-11-12 16:55:58,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:55:58,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:55:58,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:55:58,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:55:58,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:55:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:55:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:55:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:55:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:55:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:55:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:55:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:55:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:55:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:55:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:55:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:55:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:55:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:56:06,751 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:56:06,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:06 BoogieIcfgContainer [2018-11-12 16:56:06,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:56:06,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:56:06,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:56:06,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:56:06,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:55:56" (1/3) ... [2018-11-12 16:56:06,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db0f436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:06, skipping insertion in model container [2018-11-12 16:56:06,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:55:58" (2/3) ... [2018-11-12 16:56:06,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db0f436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:06, skipping insertion in model container [2018-11-12 16:56:06,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:06" (3/3) ... [2018-11-12 16:56:06,760 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label25_false-unreach-call.c [2018-11-12 16:56:06,770 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:56:06,780 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:56:06,798 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:56:06,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:56:06,851 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:56:06,851 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:56:06,851 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:56:06,851 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:56:06,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:56:06,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:56:06,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:56:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:56:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-12 16:56:06,917 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:06,918 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] [2018-11-12 16:56:06,921 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:06,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1649769497, now seen corresponding path program 1 times [2018-11-12 16:56:06,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:06,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:06,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:06,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:06,987 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:07,390 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 16:56:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:07,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:07,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:56:07,406 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:07,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:56:07,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:56:07,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:56:07,432 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-12 16:56:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:18,820 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-12 16:56:18,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:56:18,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-11-12 16:56:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:18,863 INFO L225 Difference]: With dead ends: 2974 [2018-11-12 16:56:18,864 INFO L226 Difference]: Without dead ends: 2193 [2018-11-12 16:56:18,877 INFO L604 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 [2018-11-12 16:56:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-12 16:56:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-11-12 16:56:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 16:56:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-11-12 16:56:19,031 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 31 [2018-11-12 16:56:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:19,032 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-11-12 16:56:19,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:56:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-11-12 16:56:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-12 16:56:19,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:19,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:19,040 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:19,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1025384456, now seen corresponding path program 1 times [2018-11-12 16:56:19,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:19,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:19,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:19,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:19,044 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:19,475 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:19,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:19,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:56:19,598 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:19,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:56:19,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:56:19,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:56:19,601 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-11-12 16:56:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:29,177 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-11-12 16:56:29,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:29,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-11-12 16:56:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:29,208 INFO L225 Difference]: With dead ends: 4422 [2018-11-12 16:56:29,209 INFO L226 Difference]: Without dead ends: 2954 [2018-11-12 16:56:29,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:56:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-12 16:56:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-11-12 16:56:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-11-12 16:56:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-11-12 16:56:29,312 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 101 [2018-11-12 16:56:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:29,313 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-11-12 16:56:29,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:56:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-11-12 16:56:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-12 16:56:29,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:29,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:29,318 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:29,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:29,319 INFO L82 PathProgramCache]: Analyzing trace with hash 575354176, now seen corresponding path program 1 times [2018-11-12 16:56:29,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:29,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:29,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:29,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:29,320 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:29,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:29,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:29,553 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:29,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:29,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:29,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:29,555 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-11-12 16:56:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:37,554 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-11-12 16:56:37,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:37,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-11-12 16:56:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:37,597 INFO L225 Difference]: With dead ends: 10279 [2018-11-12 16:56:37,597 INFO L226 Difference]: Without dead ends: 7355 [2018-11-12 16:56:37,613 INFO L604 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 [2018-11-12 16:56:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-11-12 16:56:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-11-12 16:56:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-11-12 16:56:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-11-12 16:56:37,818 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 105 [2018-11-12 16:56:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:37,818 INFO L480 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-11-12 16:56:37,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-11-12 16:56:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 16:56:37,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:37,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:37,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:37,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:37,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1276627405, now seen corresponding path program 1 times [2018-11-12 16:56:37,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:37,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:37,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:37,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:37,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:38,113 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:38,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:38,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:38,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:38,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:38,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:38,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:38,169 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-11-12 16:56:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:45,791 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-11-12 16:56:45,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:45,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-12 16:56:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:45,853 INFO L225 Difference]: With dead ends: 18993 [2018-11-12 16:56:45,853 INFO L226 Difference]: Without dead ends: 11703 [2018-11-12 16:56:45,885 INFO L604 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 [2018-11-12 16:56:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-11-12 16:56:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-11-12 16:56:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-11-12 16:56:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-11-12 16:56:46,167 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 126 [2018-11-12 16:56:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:46,167 INFO L480 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-11-12 16:56:46,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-11-12 16:56:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-12 16:56:46,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:46,175 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, 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, 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] [2018-11-12 16:56:46,175 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:46,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1484086754, now seen corresponding path program 1 times [2018-11-12 16:56:46,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:46,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:46,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:46,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:46,177 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:46,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:56:46,700 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:56:46,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-12 16:56:46,705 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:56:46,756 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:56:46,756 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:56:47,414 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:56:47,415 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Performed 971 root evaluator evaluations with a maximum evaluation depth of 6. Performed 971 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:56:47,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:47,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:56:48,079 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-12 16:56:48,080 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:56:48,441 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-12 16:56:48,441 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:56:48,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:56:48,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 16:56:48,445 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:48,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:56:48,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:56:48,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:56:48,446 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 7 states. [2018-11-12 16:56:57,277 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:57:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:57:26,911 INFO L93 Difference]: Finished difference Result 23977 states and 32836 transitions. [2018-11-12 16:57:26,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:57:26,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-11-12 16:57:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:57:26,949 INFO L225 Difference]: With dead ends: 23977 [2018-11-12 16:57:26,949 INFO L226 Difference]: Without dead ends: 12344 [2018-11-12 16:57:26,973 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:57:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2018-11-12 16:57:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 12342. [2018-11-12 16:57:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12342 states. [2018-11-12 16:57:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 16714 transitions. [2018-11-12 16:57:27,208 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 16714 transitions. Word has length 228 [2018-11-12 16:57:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:57:27,208 INFO L480 AbstractCegarLoop]: Abstraction has 12342 states and 16714 transitions. [2018-11-12 16:57:27,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:57:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 16714 transitions. [2018-11-12 16:57:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-12 16:57:27,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:57:27,220 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:57:27,221 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:57:27,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1811671040, now seen corresponding path program 1 times [2018-11-12 16:57:27,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:57:27,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:27,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:57:27,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:27,223 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:57:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:57:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 131 proven. 223 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:57:28,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:57:28,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:57:28,289 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-12 16:57:28,290 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:57:28,298 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:57:28,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:28,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:28,899 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 4322 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4322 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:57:28,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:28,943 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:29,851 INFO L227 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-12 16:57:29,851 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:31,465 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-12 16:57:31,465 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:31,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:31,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 16:57:31,466 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:31,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:57:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:57:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:57:31,468 INFO L87 Difference]: Start difference. First operand 12342 states and 16714 transitions. Second operand 16 states. [2018-11-12 16:57:59,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:58:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:22,197 INFO L93 Difference]: Finished difference Result 25519 states and 34495 transitions. [2018-11-12 16:58:22,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:58:22,198 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 415 [2018-11-12 16:58:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:22,256 INFO L225 Difference]: With dead ends: 25519 [2018-11-12 16:58:22,256 INFO L226 Difference]: Without dead ends: 13886 [2018-11-12 16:58:22,288 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 422 GetRequests, 352 SyntacticMatches, 48 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:58:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13886 states. [2018-11-12 16:58:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13886 to 13648. [2018-11-12 16:58:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13648 states. [2018-11-12 16:58:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13648 states to 13648 states and 18047 transitions. [2018-11-12 16:58:22,604 INFO L78 Accepts]: Start accepts. Automaton has 13648 states and 18047 transitions. Word has length 415 [2018-11-12 16:58:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:22,605 INFO L480 AbstractCegarLoop]: Abstraction has 13648 states and 18047 transitions. [2018-11-12 16:58:22,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:58:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 13648 states and 18047 transitions. [2018-11-12 16:58:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2018-11-12 16:58:22,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:22,636 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:58:22,636 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:22,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 497811943, now seen corresponding path program 1 times [2018-11-12 16:58:22,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:22,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:22,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:23,553 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 16:58:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 162 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:25,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:58:25,411 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:58:25,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 757 with the following transitions: [2018-11-12 16:58:25,413 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:58:25,426 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:58:25,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:58:26,383 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:58:26,383 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 13836 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13836 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:58:26,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:26,394 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:58:27,502 INFO L227 lantSequenceWeakener]: Weakened 447 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-12 16:58:27,502 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:58:28,373 INFO L415 sIntCurrentIteration]: We unified 755 AI predicates to 755 [2018-11-12 16:58:28,374 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:58:28,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:58:28,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [11] total 40 [2018-11-12 16:58:28,374 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:28,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 16:58:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 16:58:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-12 16:58:28,377 INFO L87 Difference]: Start difference. First operand 13648 states and 18047 transitions. Second operand 31 states. [2018-11-12 16:59:15,570 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:59:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:30,223 INFO L93 Difference]: Finished difference Result 26706 states and 35738 transitions. [2018-11-12 16:59:30,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-12 16:59:30,223 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 756 [2018-11-12 16:59:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:30,295 INFO L225 Difference]: With dead ends: 26706 [2018-11-12 16:59:30,295 INFO L226 Difference]: Without dead ends: 15073 [2018-11-12 16:59:30,311 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 795 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=548, Invalid=4422, Unknown=0, NotChecked=0, Total=4970 [2018-11-12 16:59:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15073 states. [2018-11-12 16:59:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15073 to 15062. [2018-11-12 16:59:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15062 states. [2018-11-12 16:59:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15062 states to 15062 states and 19495 transitions. [2018-11-12 16:59:30,592 INFO L78 Accepts]: Start accepts. Automaton has 15062 states and 19495 transitions. Word has length 756 [2018-11-12 16:59:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:30,593 INFO L480 AbstractCegarLoop]: Abstraction has 15062 states and 19495 transitions. [2018-11-12 16:59:30,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-12 16:59:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 15062 states and 19495 transitions. [2018-11-12 16:59:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2018-11-12 16:59:30,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:30,636 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:30,636 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:30,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:30,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1863793719, now seen corresponding path program 1 times [2018-11-12 16:59:30,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:30,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:30,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:30,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:30,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:31,353 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 Received shutdown request... [2018-11-12 16:59:31,481 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-11-12 16:59:31,482 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:59:31,489 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:59:31,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:59:31 BoogieIcfgContainer [2018-11-12 16:59:31,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:59:31,490 INFO L168 Benchmark]: Toolchain (without parser) took 214971.22 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -596.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,492 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-12 16:59:31,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1743.65 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -953.4 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,494 INFO L168 Benchmark]: Boogie Preprocessor took 218.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,495 INFO L168 Benchmark]: RCFGBuilder took 8016.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.8 MB). Peak memory consumption was 514.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,497 INFO L168 Benchmark]: TraceAbstraction took 204736.35 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -319.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:31,503 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1743.65 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -953.4 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 218.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8016.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.8 MB). Peak memory consumption was 514.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204736.35 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -319.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was analyzing trace of length 944 with TraceHistMax 5,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.6s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 188.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3223 SDtfs, 24820 SDslu, 1162 SDs, 0 SdLazy, 45180 SolverSat, 6018 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1480 GetRequests, 1310 SyntacticMatches, 51 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15062occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979041986002869 AbsIntWeakeningRatio, 0.07020057306590258 AbsIntAvgWeakeningVarsNumRemoved, 16.823065902578797 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1117 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1762 NumberOfCodeBlocks, 1762 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1755 ConstructedInterpolants, 0 QuantifiedInterpolants, 4956202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 506/928 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown