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/Problem12_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:16:28,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:16:28,502 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:16:28,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:16:28,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:16:28,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:16:28,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:16:28,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:16:28,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:16:28,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:16:28,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:16:28,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:16:28,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:16:28,530 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:16:28,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:16:28,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:16:28,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:16:28,538 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:16:28,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:16:28,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:16:28,548 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:16:28,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:16:28,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:16:28,558 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:16:28,558 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:16:28,559 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:16:28,560 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:16:28,564 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:16:28,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:16:28,566 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:16:28,566 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:16:28,567 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:16:28,567 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:16:28,568 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:16:28,569 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:16:28,569 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:16:28,570 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 16:16:28,598 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:16:28,599 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:16:28,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:16:28,601 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:16:28,601 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:16:28,601 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:16:28,601 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:16:28,601 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:16:28,602 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:16:28,602 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:16:28,602 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:16:28,602 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:16:28,603 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:16:28,603 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:16:28,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:16:28,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:16:28,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:16:28,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:16:28,604 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:16:28,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:16:28,606 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:16:28,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:16:28,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:16:28,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:16:28,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:16:28,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:16:28,607 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:16:28,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:16:28,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:16:28,608 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:16:28,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:16:28,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:16:28,609 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:16:28,609 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:16:28,609 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:16:28,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:16:28,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:16:28,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:16:28,682 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:16:28,682 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:16:28,683 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-12 16:16:28,739 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e7822a4/1ead5d7f05ac47e3a51d8d71415acb5e/FLAG784aa6cf1 [2018-11-12 16:16:29,503 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:16:29,504 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-12 16:16:29,536 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e7822a4/1ead5d7f05ac47e3a51d8d71415acb5e/FLAG784aa6cf1 [2018-11-12 16:16:29,552 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e7822a4/1ead5d7f05ac47e3a51d8d71415acb5e [2018-11-12 16:16:29,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:16:29,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:16:29,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:16:29,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:16:29,570 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:16:29,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:16:29" (1/1) ... [2018-11-12 16:16:29,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602fafd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:29, skipping insertion in model container [2018-11-12 16:16:29,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:16:29" (1/1) ... [2018-11-12 16:16:29,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:16:29,760 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:16:31,023 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:16:31,028 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:16:31,707 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:16:31,741 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:16:31,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31 WrapperNode [2018-11-12 16:16:31,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:16:31,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:16:31,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:16:31,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:16:32,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:16:32,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:16:32,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:16:32,070 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:16:32,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (1/1) ... [2018-11-12 16:16:32,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:16:32,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:16:32,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:16:32,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:16:32,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (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 16:16:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:16:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:16:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:16:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:16:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:16:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:16:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:16:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:16:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:16:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:16:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:16:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:16:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:16:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:16:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:16:40,922 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:16:40,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:16:40 BoogieIcfgContainer [2018-11-12 16:16:40,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:16:40,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:16:40,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:16:40,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:16:40,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:16:29" (1/3) ... [2018-11-12 16:16:40,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c486f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:16:40, skipping insertion in model container [2018-11-12 16:16:40,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:16:31" (2/3) ... [2018-11-12 16:16:40,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c486f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:16:40, skipping insertion in model container [2018-11-12 16:16:40,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:16:40" (3/3) ... [2018-11-12 16:16:40,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label30_false-unreach-call.c [2018-11-12 16:16:40,942 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:16:40,951 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:16:40,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:16:41,015 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:16:41,016 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:16:41,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:16:41,016 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:16:41,016 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:16:41,016 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:16:41,017 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:16:41,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:16:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 16:16:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-12 16:16:41,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:41,073 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] [2018-11-12 16:16:41,075 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:41,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash -145223636, now seen corresponding path program 1 times [2018-11-12 16:16:41,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:41,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:41,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:41,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:41,138 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:41,546 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 16:16:41,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:41,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:16:41,549 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:41,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:16:41,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:16:41,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:16:41,577 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-12 16:16:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:53,753 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-12 16:16:53,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:16:53,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-12 16:16:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:53,804 INFO L225 Difference]: With dead ends: 3234 [2018-11-12 16:16:53,804 INFO L226 Difference]: Without dead ends: 2388 [2018-11-12 16:16:53,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:16:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-12 16:16:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-12 16:16:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-12 16:16:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-12 16:16:53,997 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 32 [2018-11-12 16:16:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:53,998 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-12 16:16:53,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:16:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-12 16:16:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 16:16:54,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:54,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:54,006 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:54,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 552295319, now seen corresponding path program 1 times [2018-11-12 16:16:54,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:54,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:54,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:54,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:54,008 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:54,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:54,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:54,523 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:54,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:54,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:54,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:54,526 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-11-12 16:17:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:17:07,789 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-11-12 16:17:07,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:17:07,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-12 16:17:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:17:07,840 INFO L225 Difference]: With dead ends: 9463 [2018-11-12 16:17:07,840 INFO L226 Difference]: Without dead ends: 7081 [2018-11-12 16:17:07,854 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:17:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-11-12 16:17:08,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-11-12 16:17:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-11-12 16:17:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-11-12 16:17:08,059 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 113 [2018-11-12 16:17:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:17:08,060 INFO L480 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-11-12 16:17:08,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:17:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-11-12 16:17:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-12 16:17:08,066 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:17:08,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:17:08,066 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:17:08,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1059149049, now seen corresponding path program 1 times [2018-11-12 16:17:08,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:17:08,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:08,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:17:08,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:08,069 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:17:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:17:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:17:08,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:17:08,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:17:08,307 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:17:08,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:17:08,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:17:08,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:17:08,308 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-11-12 16:17:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:17:17,569 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-11-12 16:17:17,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:17:17,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-12 16:17:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:17:17,664 INFO L225 Difference]: With dead ends: 23489 [2018-11-12 16:17:17,664 INFO L226 Difference]: Without dead ends: 16458 [2018-11-12 16:17:17,704 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 16:17:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-11-12 16:17:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-11-12 16:17:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-11-12 16:17:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-11-12 16:17:18,151 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 121 [2018-11-12 16:17:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:17:18,152 INFO L480 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-11-12 16:17:18,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:17:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-11-12 16:17:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-12 16:17:18,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:17:18,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:17:18,167 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:17:18,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:18,167 INFO L82 PathProgramCache]: Analyzing trace with hash -128929438, now seen corresponding path program 1 times [2018-11-12 16:17:18,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:17:18,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:18,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:17:18,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:18,169 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:17:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:17:18,498 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:17:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:17:19,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:17:19,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:17:19,035 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:17:19,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:17:19,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:17:19,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:17:19,038 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-11-12 16:17:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:17:30,037 INFO L93 Difference]: Finished difference Result 51805 states and 75181 transitions. [2018-11-12 16:17:30,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:17:30,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-12 16:17:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:17:30,199 INFO L225 Difference]: With dead ends: 51805 [2018-11-12 16:17:30,199 INFO L226 Difference]: Without dead ends: 35442 [2018-11-12 16:17:30,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:17:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35442 states. [2018-11-12 16:17:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35442 to 35319. [2018-11-12 16:17:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35319 states. [2018-11-12 16:17:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35319 states to 35319 states and 49477 transitions. [2018-11-12 16:17:31,039 INFO L78 Accepts]: Start accepts. Automaton has 35319 states and 49477 transitions. Word has length 146 [2018-11-12 16:17:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:17:31,040 INFO L480 AbstractCegarLoop]: Abstraction has 35319 states and 49477 transitions. [2018-11-12 16:17:31,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:17:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 35319 states and 49477 transitions. [2018-11-12 16:17:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-12 16:17:31,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:17:31,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:17:31,053 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:17:31,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1800636461, now seen corresponding path program 1 times [2018-11-12 16:17:31,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:17:31,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:31,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:17:31,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:31,057 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:17:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:17:31,365 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:17:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:17:31,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:17:31,785 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:17:31,786 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-12 16:17:31,788 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2480], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:17:31,843 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:17:31,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:17:32,432 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:17:32,434 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Performed 1037 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1037 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:17:32,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:32,480 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:17:33,077 INFO L227 lantSequenceWeakener]: Weakened 200 states. On average, predicates are now at 75.2% of their original sizes. [2018-11-12 16:17:33,078 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:17:33,567 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-12 16:17:33,567 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:17:33,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:17:33,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 16:17:33,568 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:17:33,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:17:33,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:17:33,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:17:33,570 INFO L87 Difference]: Start difference. First operand 35319 states and 49477 transitions. Second operand 8 states. [2018-11-12 16:17:40,819 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:18:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:18:07,328 INFO L93 Difference]: Finished difference Result 71402 states and 99937 transitions. [2018-11-12 16:18:07,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:18:07,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2018-11-12 16:18:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:18:07,454 INFO L225 Difference]: With dead ends: 71402 [2018-11-12 16:18:07,454 INFO L226 Difference]: Without dead ends: 36089 [2018-11-12 16:18:07,524 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:18:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36089 states. [2018-11-12 16:18:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36089 to 36087. [2018-11-12 16:18:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36087 states. [2018-11-12 16:18:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36087 states to 36087 states and 50261 transitions. [2018-11-12 16:18:08,157 INFO L78 Accepts]: Start accepts. Automaton has 36087 states and 50261 transitions. Word has length 209 [2018-11-12 16:18:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:18:08,158 INFO L480 AbstractCegarLoop]: Abstraction has 36087 states and 50261 transitions. [2018-11-12 16:18:08,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:18:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36087 states and 50261 transitions. [2018-11-12 16:18:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-12 16:18:08,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:18:08,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:18:08,167 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:18:08,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1958314628, now seen corresponding path program 1 times [2018-11-12 16:18:08,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:18:08,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:08,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:18:08,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:08,169 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:18:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:18:08,482 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:18:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:18:08,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:18:08,866 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:18:08,867 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-12 16:18:08,867 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [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], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:18:08,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:18:08,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:18:09,326 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:18:09,327 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Performed 2651 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2651 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:18:09,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:09,363 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:18:09,910 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 75.24% of their original sizes. [2018-11-12 16:18:09,912 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:18:10,826 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-11-12 16:18:10,826 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:18:10,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:18:10,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-12 16:18:10,827 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:18:10,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:18:10,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:18:10,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:18:10,828 INFO L87 Difference]: Start difference. First operand 36087 states and 50261 transitions. Second operand 11 states. [2018-11-12 16:18:17,233 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:19:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:16,123 INFO L93 Difference]: Finished difference Result 72942 states and 101890 transitions. [2018-11-12 16:19:16,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:19:16,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2018-11-12 16:19:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:16,299 INFO L225 Difference]: With dead ends: 72942 [2018-11-12 16:19:16,300 INFO L226 Difference]: Without dead ends: 37629 [2018-11-12 16:19:16,394 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:19:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2018-11-12 16:19:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 37626. [2018-11-12 16:19:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37626 states. [2018-11-12 16:19:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37626 states to 37626 states and 51822 transitions. [2018-11-12 16:19:17,391 INFO L78 Accepts]: Start accepts. Automaton has 37626 states and 51822 transitions. Word has length 222 [2018-11-12 16:19:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:17,391 INFO L480 AbstractCegarLoop]: Abstraction has 37626 states and 51822 transitions. [2018-11-12 16:19:17,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:19:17,392 INFO L276 IsEmpty]: Start isEmpty. Operand 37626 states and 51822 transitions. [2018-11-12 16:19:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-11-12 16:19:17,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:17,399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:19:17,399 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:17,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash 129714801, now seen corresponding path program 1 times [2018-11-12 16:19:17,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:17,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:17,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:17,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:17,401 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 53 proven. 68 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:19:17,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:19:17,929 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:19:17,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-11-12 16:19:17,929 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [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], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:19:17,935 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:19:17,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:19:18,070 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:19:18,486 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:19:18,486 INFO L272 AbstractInterpreter]: Visited 158 different actions 310 times. Merged at 5 different actions 5 times. Never widened. Performed 5006 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5006 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:19:18,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:18,526 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:19:20,017 INFO L227 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 77.19% of their original sizes. [2018-11-12 16:19:20,017 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:19:20,496 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-11-12 16:19:20,496 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:19:20,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:19:20,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-12 16:19:20,497 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:20,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 16:19:20,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 16:19:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:19:20,498 INFO L87 Difference]: Start difference. First operand 37626 states and 51822 transitions. Second operand 24 states. Received shutdown request... [2018-11-12 16:20:00,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 16:20:00,430 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:20:00,436 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:20:00,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:20:00 BoogieIcfgContainer [2018-11-12 16:20:00,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:20:00,438 INFO L168 Benchmark]: Toolchain (without parser) took 210873.43 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,439 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:20:00,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2175.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 326.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,442 INFO L168 Benchmark]: Boogie Preprocessor took 246.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,442 INFO L168 Benchmark]: RCFGBuilder took 8607.40 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -153.9 MB). Peak memory consumption was 659.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,443 INFO L168 Benchmark]: TraceAbstraction took 199512.64 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -129.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:20:00,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2175.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 326.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8607.40 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -153.9 MB). Peak memory consumption was 659.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199512.64 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -129.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (37626states) and FLOYD_HOARE automaton (currently 26 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (16681 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 199.4s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 185.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2766 SDtfs, 24142 SDslu, 1732 SDs, 0 SdLazy, 39704 SolverSat, 7309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 748 GetRequests, 660 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37626occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9972534945593611 AbsIntWeakeningRatio, 0.11790393013100436 AbsIntAvgWeakeningVarsNumRemoved, 17.871906841339158 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 261 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1102 NumberOfCodeBlocks, 1102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1095 ConstructedInterpolants, 0 QuantifiedInterpolants, 1037478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 309/455 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown