java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:39:32,087 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:39:32,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:39:32,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:39:32,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:39:32,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:39:32,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:39:32,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:39:32,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:39:32,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:39:32,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:39:32,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:39:32,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:39:32,112 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:39:32,114 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:39:32,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:39:32,115 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:39:32,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:39:32,119 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:39:32,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:39:32,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:39:32,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:39:32,126 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:39:32,126 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:39:32,127 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:39:32,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:39:32,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:39:32,129 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:39:32,130 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:39:32,131 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:39:32,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:39:32,132 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:39:32,133 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:39:32,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:39:32,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:39:32,136 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:39:32,136 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:39:32,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:39:32,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:39:32,167 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:39:32,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:39:32,168 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:39:32,168 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:39:32,168 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:39:32,168 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:39:32,169 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:39:32,169 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:39:32,169 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:39:32,169 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:39:32,169 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:39:32,170 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:39:32,170 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:39:32,171 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:39:32,171 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:39:32,172 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:39:32,172 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:39:32,172 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:39:32,172 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:39:32,172 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:39:32,173 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:39:32,173 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:39:32,173 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:39:32,173 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:39:32,173 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:39:32,174 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:39:32,174 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:39:32,175 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:39:32,176 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:39:32,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:39:32,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:39:32,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:39:32,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:39:32,250 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:39:32,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-27 07:39:32,329 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3332f8ce/0dc5b9fabd224e93b14d816550c132e7/FLAGc45ae00b3 [2018-10-27 07:39:32,984 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:39:32,985 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-27 07:39:33,002 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3332f8ce/0dc5b9fabd224e93b14d816550c132e7/FLAGc45ae00b3 [2018-10-27 07:39:33,026 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3332f8ce/0dc5b9fabd224e93b14d816550c132e7 [2018-10-27 07:39:33,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:39:33,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:39:33,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:33,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:39:33,047 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:39:33,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:33" (1/1) ... [2018-10-27 07:39:33,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fe24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:33, skipping insertion in model container [2018-10-27 07:39:33,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:33" (1/1) ... [2018-10-27 07:39:33,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:39:33,159 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:39:33,811 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:33,816 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:39:34,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:34,028 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:39:34,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34 WrapperNode [2018-10-27 07:39:34,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:34,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:34,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:39:34,033 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:39:34,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:34,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:39:34,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:39:34,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:39:34,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... [2018-10-27 07:39:34,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:39:34,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:39:34,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:39:34,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:39:34,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:39:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:39:34,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:39:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:39:34,655 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:39:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:39:34,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:39:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:39:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:39:39,464 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:39:39,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:39 BoogieIcfgContainer [2018-10-27 07:39:39,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:39:39,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:39:39,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:39:39,473 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:39:39,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:39:33" (1/3) ... [2018-10-27 07:39:39,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268f1752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:39, skipping insertion in model container [2018-10-27 07:39:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:34" (2/3) ... [2018-10-27 07:39:39,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268f1752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:39, skipping insertion in model container [2018-10-27 07:39:39,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:39" (3/3) ... [2018-10-27 07:39:39,481 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-10-27 07:39:39,491 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:39:39,503 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:39:39,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:39:39,557 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:39:39,557 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:39:39,557 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:39:39,557 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:39:39,557 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:39:39,558 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:39:39,558 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:39:39,558 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:39:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:39:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 07:39:39,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:39,598 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:39:39,600 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:39,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-10-27 07:39:39,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:39,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:39,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:39,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:39,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:40,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:40,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:39:40,103 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:40,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:39:40,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:39:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:39:40,129 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-27 07:39:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:42,537 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-27 07:39:42,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:39:42,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-27 07:39:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:42,563 INFO L225 Difference]: With dead ends: 782 [2018-10-27 07:39:42,563 INFO L226 Difference]: Without dead ends: 487 [2018-10-27 07:39:42,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:39:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-27 07:39:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-27 07:39:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-27 07:39:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-27 07:39:42,671 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-10-27 07:39:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:42,671 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-27 07:39:42,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:39:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-27 07:39:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 07:39:42,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:42,681 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:39:42,682 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:42,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-10-27 07:39:42,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:42,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:42,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:43,267 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 07:39:43,717 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-27 07:39:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:43,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:43,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 07:39:43,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:43,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 07:39:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 07:39:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:39:43,970 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-27 07:39:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:51,418 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-27 07:39:51,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:39:51,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-27 07:39:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:51,432 INFO L225 Difference]: With dead ends: 1760 [2018-10-27 07:39:51,432 INFO L226 Difference]: Without dead ends: 1284 [2018-10-27 07:39:51,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 07:39:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-27 07:39:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-27 07:39:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-27 07:39:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-27 07:39:51,507 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-10-27 07:39:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:51,508 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-27 07:39:51,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 07:39:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-27 07:39:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-27 07:39:51,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:51,514 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:39:51,514 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:51,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-10-27 07:39:51,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:51,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:51,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:51,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:51,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:51,873 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:39:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:39:51,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:39:51,925 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:39:51,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-27 07:39:51,928 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:39:51,989 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:39:51,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:39:52,648 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:39:52,650 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:39:52,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:52,682 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:39:53,262 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 73.58% of their original sizes. [2018-10-27 07:39:53,262 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:39:53,523 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-10-27 07:39:53,524 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:39:53,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:39:53,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:39:53,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:53,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:39:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:39:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:39:53,528 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-10-27 07:40:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:16,595 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-27 07:40:16,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:40:16,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2018-10-27 07:40:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:16,603 INFO L225 Difference]: With dead ends: 2260 [2018-10-27 07:40:16,603 INFO L226 Difference]: Without dead ends: 1229 [2018-10-27 07:40:16,606 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:40:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-27 07:40:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-27 07:40:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-27 07:40:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-27 07:40:16,647 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 196 [2018-10-27 07:40:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:16,647 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-27 07:40:16,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:40:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-27 07:40:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 07:40:16,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:16,655 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:40:16,655 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:16,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 188115406, now seen corresponding path program 1 times [2018-10-27 07:40:16,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:16,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:16,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:16,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:16,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 07:40:17,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:17,222 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:17,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-27 07:40:17,223 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:17,232 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:17,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:17,893 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:40:17,893 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:40:17,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:17,933 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:40:17,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:17,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:40:17,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:17,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:40:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:18,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:40:20,416 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_478 Int)) (let ((.cse0 (mod (+ (div v_~a23~0_478 5) 1) 90))) (and (not (= (mod v_~a23~0_478 5) 0)) (< v_~a23~0_478 0) (<= c_~a23~0 (+ .cse0 49)) (= 0 .cse0) (<= |c_old(~a23~0)| v_~a23~0_478)))) (exists ((v_prenex_5 Int)) (let ((.cse1 (mod (div v_prenex_5 5) 90))) (and (<= 0 v_prenex_5) (= .cse1 0) (<= |c_old(~a23~0)| v_prenex_5) (<= c_~a23~0 (+ .cse1 49))))) (exists ((v_prenex_4 Int)) (let ((.cse3 (div v_prenex_4 5))) (let ((.cse2 (mod .cse3 90))) (and (not (= .cse2 0)) (= (mod v_prenex_4 5) 0) (<= (+ c_~a23~0 41) .cse2) (< .cse3 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_7 Int)) (let ((.cse5 (+ (div v_prenex_7 5) 1))) (let ((.cse4 (mod .cse5 90))) (and (< v_prenex_7 0) (not (= 0 .cse4)) (< .cse5 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= (mod v_prenex_7 5) 0)) (<= (+ c_~a23~0 41) .cse4))))) (exists ((v_prenex_3 Int)) (let ((.cse6 (div v_prenex_3 5))) (and (<= c_~a23~0 (+ (mod .cse6 90) 49)) (= (mod v_prenex_3 5) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_3)))) (exists ((v_prenex_1 Int)) (let ((.cse8 (div v_prenex_1 5))) (let ((.cse7 (mod .cse8 90))) (and (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= 0 v_prenex_1) (not (= .cse7 0)) (<= |c_old(~a23~0)| v_prenex_1))))) (exists ((v_prenex_2 Int)) (let ((.cse9 (div v_prenex_2 5))) (and (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse9) (<= c_~a23~0 (+ (mod .cse9 90) 49)) (<= 0 v_prenex_2)))) (exists ((v_prenex_8 Int)) (let ((.cse10 (mod (div v_prenex_8 5) 90))) (and (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ .cse10 49)) (= .cse10 0) (= (mod v_prenex_8 5) 0)))) (exists ((v_prenex_6 Int)) (let ((.cse11 (+ (div v_prenex_6 5) 1))) (and (<= c_~a23~0 (+ (mod .cse11 90) 49)) (not (= (mod v_prenex_6 5) 0)) (< v_prenex_6 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 .cse11))))) is different from true [2018-10-27 07:40:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-10-27 07:40:20,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:40:21,132 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-27 07:40:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 07:40:21,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 07:40:21,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-10-27 07:40:21,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:21,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:40:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:40:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 07:40:21,544 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-10-27 07:40:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:25,154 INFO L93 Difference]: Finished difference Result 2987 states and 4934 transitions. [2018-10-27 07:40:25,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:40:25,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2018-10-27 07:40:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:25,177 INFO L225 Difference]: With dead ends: 2987 [2018-10-27 07:40:25,177 INFO L226 Difference]: Without dead ends: 1956 [2018-10-27 07:40:25,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 479 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 07:40:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2018-10-27 07:40:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1949. [2018-10-27 07:40:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-10-27 07:40:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3020 transitions. [2018-10-27 07:40:25,249 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3020 transitions. Word has length 240 [2018-10-27 07:40:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:25,250 INFO L481 AbstractCegarLoop]: Abstraction has 1949 states and 3020 transitions. [2018-10-27 07:40:25,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:40:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3020 transitions. [2018-10-27 07:40:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-27 07:40:25,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:25,257 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:40:25,257 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:25,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash 764806318, now seen corresponding path program 1 times [2018-10-27 07:40:25,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:25,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:25,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:25,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:25,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:40:25,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:25,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:25,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-27 07:40:25,842 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:25,852 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:25,853 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:26,445 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:40:26,446 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:40:26,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:26,484 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:40:26,885 INFO L227 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 75.38% of their original sizes. [2018-10-27 07:40:26,886 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:40:27,388 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-10-27 07:40:27,388 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:40:27,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:40:27,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:40:27,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:27,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:40:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:40:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:40:27,391 INFO L87 Difference]: Start difference. First operand 1949 states and 3020 transitions. Second operand 10 states. [2018-10-27 07:42:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:44,614 INFO L93 Difference]: Finished difference Result 4094 states and 6590 transitions. [2018-10-27 07:42:44,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 07:42:44,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 256 [2018-10-27 07:42:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:44,626 INFO L225 Difference]: With dead ends: 4094 [2018-10-27 07:42:44,627 INFO L226 Difference]: Without dead ends: 2341 [2018-10-27 07:42:44,635 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:42:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2018-10-27 07:42:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2334. [2018-10-27 07:42:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2018-10-27 07:42:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3487 transitions. [2018-10-27 07:42:44,692 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3487 transitions. Word has length 256 [2018-10-27 07:42:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:44,692 INFO L481 AbstractCegarLoop]: Abstraction has 2334 states and 3487 transitions. [2018-10-27 07:42:44,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:42:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3487 transitions. [2018-10-27 07:42:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-27 07:42:44,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:44,700 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:42:44,700 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:44,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1316171772, now seen corresponding path program 1 times [2018-10-27 07:42:44,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:44,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:44,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:44,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:44,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:45,050 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 07:42:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 07:42:45,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:45,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:42:45,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:45,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:42:45,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:42:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:42:45,102 INFO L87 Difference]: Start difference. First operand 2334 states and 3487 transitions. Second operand 4 states. [2018-10-27 07:42:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:47,758 INFO L93 Difference]: Finished difference Result 7856 states and 12410 transitions. [2018-10-27 07:42:47,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:42:47,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-10-27 07:42:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:47,794 INFO L225 Difference]: With dead ends: 7856 [2018-10-27 07:42:47,794 INFO L226 Difference]: Without dead ends: 5717 [2018-10-27 07:42:47,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:42:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2018-10-27 07:42:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 5714. [2018-10-27 07:42:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2018-10-27 07:42:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 8482 transitions. [2018-10-27 07:42:47,962 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 8482 transitions. Word has length 271 [2018-10-27 07:42:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:47,963 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 8482 transitions. [2018-10-27 07:42:47,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:42:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 8482 transitions. [2018-10-27 07:42:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-27 07:42:47,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:47,981 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:42:47,982 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:47,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:47,982 INFO L82 PathProgramCache]: Analyzing trace with hash 385643921, now seen corresponding path program 1 times [2018-10-27 07:42:47,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:47,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:47,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:47,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:47,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 101 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-27 07:42:48,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:42:48,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:42:48,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-27 07:42:48,618 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [657], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:42:48,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:42:48,624 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:42:48,912 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:42:48,912 INFO L272 AbstractInterpreter]: Visited 141 different actions 417 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:42:48,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:48,916 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:42:48,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:42:48,916 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:42:48,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:48,932 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:42:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:49,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:42:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-27 07:42:53,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:42:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:42:53,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:42:53,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 12 [2018-10-27 07:42:53,373 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:42:53,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:42:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:42:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=89, Unknown=2, NotChecked=0, Total=132 [2018-10-27 07:42:53,375 INFO L87 Difference]: Start difference. First operand 5714 states and 8482 transitions. Second operand 10 states. [2018-10-27 07:42:58,864 WARN L179 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 Received shutdown request... [2018-10-27 07:43:38,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 07:43:38,831 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:43:38,837 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:43:38,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:38 BoogieIcfgContainer [2018-10-27 07:43:38,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:43:38,838 INFO L168 Benchmark]: Toolchain (without parser) took 245799.56 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 360.1 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:38,839 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 07:43:38,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 990.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:38,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 378.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.7 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:38,841 INFO L168 Benchmark]: Boogie Preprocessor took 170.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:43:38,842 INFO L168 Benchmark]: RCFGBuilder took 4882.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:38,843 INFO L168 Benchmark]: TraceAbstraction took 239370.60 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 216.1 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:38,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 990.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 378.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.7 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4882.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239370.60 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 216.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (5714states) and FLOYD_HOARE automaton (currently 22 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (12105 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 239.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 222.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1577 SDtfs, 5618 SDslu, 1332 SDs, 0 SdLazy, 9397 SolverSat, 2513 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 193.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1576 GetRequests, 1498 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5714occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.997507295924687 AbsIntWeakeningRatio, 0.12444444444444444 AbsIntAvgWeakeningVarsNumRemoved, 18.18 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 271 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 1952 NumberOfCodeBlocks, 1952 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2470 ConstructedInterpolants, 5 QuantifiedInterpolants, 2012943 SizeOfPredicates, 4 NumberOfNonLiveVariables, 944 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1241/1586 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown