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/Problem13_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:25:25,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:25:25,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:25:25,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:25:25,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:25:25,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:25:25,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:25:25,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:25:25,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:25:25,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:25:25,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:25:25,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:25:25,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:25:25,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:25:25,630 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:25:25,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:25:25,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:25:25,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:25:25,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:25:25,636 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:25:25,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:25:25,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:25:25,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:25:25,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:25:25,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:25:25,642 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:25:25,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:25:25,644 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:25:25,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:25:25,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:25:25,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:25:25,646 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:25:25,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:25:25,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:25:25,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:25:25,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:25:25,649 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 16:25:25,668 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:25:25,668 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:25:25,669 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:25:25,669 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:25:25,669 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:25:25,669 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:25:25,672 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:25:25,672 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:25:25,672 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:25:25,672 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:25:25,672 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:25:25,673 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:25:25,673 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:25:25,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:25:25,675 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:25:25,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:25:25,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:25:25,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:25:25,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:25:25,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:25:25,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:25:25,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:25:25,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:25:25,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:25:25,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:25:25,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:25:25,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:25:25,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:25:25,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:25:25,679 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:25:25,679 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:25:25,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:25:25,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:25:25,681 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:25:25,681 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:25:25,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:25:25,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:25:25,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:25:25,768 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:25:25,769 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:25:25,769 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-11-12 16:25:25,829 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11457319b/242851b8f7104c518a136426948e94a7/FLAG4f4b59222 [2018-11-12 16:25:26,629 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:25:26,630 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-11-12 16:25:26,669 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11457319b/242851b8f7104c518a136426948e94a7/FLAG4f4b59222 [2018-11-12 16:25:26,690 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11457319b/242851b8f7104c518a136426948e94a7 [2018-11-12 16:25:26,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:25:26,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:25:26,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:25:26,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:25:26,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:25:26,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:25:26" (1/1) ... [2018-11-12 16:25:26,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c1e6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:26, skipping insertion in model container [2018-11-12 16:25:26,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:25:26" (1/1) ... [2018-11-12 16:25:26,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:25:26,924 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:25:28,406 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:25:28,412 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:25:29,155 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:25:29,193 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:25:29,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29 WrapperNode [2018-11-12 16:25:29,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:25:29,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:25:29,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:25:29,196 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:25:29,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:25:29,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:25:29,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:25:29,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:25:29,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (1/1) ... [2018-11-12 16:25:29,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:25:29,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:25:29,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:25:29,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:25:29,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (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 16:25:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:25:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:25:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:25:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:25:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:25:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:25:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:25:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:25:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:25:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:25:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:25:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:25:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:25:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:25:29,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:25:40,901 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:25:40,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:25:40 BoogieIcfgContainer [2018-11-12 16:25:40,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:25:40,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:25:40,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:25:40,906 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:25:40,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:25:26" (1/3) ... [2018-11-12 16:25:40,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426b286a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:25:40, skipping insertion in model container [2018-11-12 16:25:40,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:29" (2/3) ... [2018-11-12 16:25:40,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426b286a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:25:40, skipping insertion in model container [2018-11-12 16:25:40,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:25:40" (3/3) ... [2018-11-12 16:25:40,910 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40_false-unreach-call.c [2018-11-12 16:25:40,920 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:25:40,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:25:40,946 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:25:41,004 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:25:41,004 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:25:41,004 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:25:41,004 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:25:41,005 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:25:41,005 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:25:41,005 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:25:41,005 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:25:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:25:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 16:25:41,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:25:41,057 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] [2018-11-12 16:25:41,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:25:41,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:25:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 271485347, now seen corresponding path program 1 times [2018-11-12 16:25:41,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:25:41,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:41,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:25:41,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:41,121 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:25:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:25:41,498 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:25:41,615 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 16:25:41,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:25:41,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:25:41,618 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:25:41,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:25:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:25:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:25:41,653 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 16:25:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:25:50,111 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-12 16:25:50,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:25:50,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-12 16:25:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:25:50,151 INFO L225 Difference]: With dead ends: 3097 [2018-11-12 16:25:50,151 INFO L226 Difference]: Without dead ends: 1975 [2018-11-12 16:25:50,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:25:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-12 16:25:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-12 16:25:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-12 16:25:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-12 16:25:50,348 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 35 [2018-11-12 16:25:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:25:50,348 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-12 16:25:50,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:25:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-12 16:25:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-12 16:25:50,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:25:50,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:50,356 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:25:50,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:25:50,357 INFO L82 PathProgramCache]: Analyzing trace with hash -526382702, now seen corresponding path program 1 times [2018-11-12 16:25:50,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:25:50,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:50,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:25:50,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:50,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:25:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:25:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:25:50,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:25:50,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:25:50,849 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:25:50,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:25:50,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:25:50,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:25:50,853 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-12 16:26:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:05,223 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-12 16:26:05,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:26:05,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-11-12 16:26:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:05,258 INFO L225 Difference]: With dead ends: 5734 [2018-11-12 16:26:05,258 INFO L226 Difference]: Without dead ends: 3766 [2018-11-12 16:26:05,267 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:26:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-12 16:26:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-12 16:26:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-12 16:26:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-12 16:26:05,398 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 111 [2018-11-12 16:26:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:05,399 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-12 16:26:05,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:26:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-12 16:26:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 16:26:05,408 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:05,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:05,409 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:05,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1795684626, now seen corresponding path program 1 times [2018-11-12 16:26:05,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:05,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:05,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:05,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:05,411 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:05,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:05,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:26:05,631 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:05,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:26:05,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:26:05,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:26:05,633 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-12 16:26:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:22,188 INFO L93 Difference]: Finished difference Result 13645 states and 21724 transitions. [2018-11-12 16:26:22,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:26:22,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-12 16:26:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:22,247 INFO L225 Difference]: With dead ends: 13645 [2018-11-12 16:26:22,247 INFO L226 Difference]: Without dead ends: 9970 [2018-11-12 16:26:22,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:26:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2018-11-12 16:26:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9781. [2018-11-12 16:26:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9781 states. [2018-11-12 16:26:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 14479 transitions. [2018-11-12 16:26:22,554 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 14479 transitions. Word has length 125 [2018-11-12 16:26:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:22,554 INFO L480 AbstractCegarLoop]: Abstraction has 9781 states and 14479 transitions. [2018-11-12 16:26:22,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:26:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 14479 transitions. [2018-11-12 16:26:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 16:26:22,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:22,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:22,569 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:22,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash -249536814, now seen corresponding path program 1 times [2018-11-12 16:26:22,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:22,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:22,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:22,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:22,571 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:22,813 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:26:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:22,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:22,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:26:22,888 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:22,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:26:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:26:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:26:22,889 INFO L87 Difference]: Start difference. First operand 9781 states and 14479 transitions. Second operand 6 states. [2018-11-12 16:26:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:34,194 INFO L93 Difference]: Finished difference Result 34076 states and 53548 transitions. [2018-11-12 16:26:34,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:26:34,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-12 16:26:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:34,329 INFO L225 Difference]: With dead ends: 34076 [2018-11-12 16:26:34,329 INFO L226 Difference]: Without dead ends: 24301 [2018-11-12 16:26:34,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:26:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2018-11-12 16:26:34,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 24078. [2018-11-12 16:26:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24078 states. [2018-11-12 16:26:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24078 states to 24078 states and 33898 transitions. [2018-11-12 16:26:35,036 INFO L78 Accepts]: Start accepts. Automaton has 24078 states and 33898 transitions. Word has length 143 [2018-11-12 16:26:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:35,037 INFO L480 AbstractCegarLoop]: Abstraction has 24078 states and 33898 transitions. [2018-11-12 16:26:35,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:26:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 24078 states and 33898 transitions. [2018-11-12 16:26:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-12 16:26:35,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:35,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:35,041 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:35,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash -874612382, now seen corresponding path program 1 times [2018-11-12 16:26:35,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:35,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:35,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:35,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:35,043 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:35,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:26:35,735 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:26:35,736 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-11-12 16:26:35,745 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2807], [2809], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3332], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:26:35,816 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:26:35,816 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:26:36,769 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:26:36,772 INFO L272 AbstractInterpreter]: Visited 120 different actions 120 times. Never merged. Never widened. Performed 2753 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2753 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:26:36,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:36,814 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:26:37,467 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 71.52% of their original sizes. [2018-11-12 16:26:37,467 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:26:37,980 INFO L415 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2018-11-12 16:26:37,981 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:26:37,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:26:37,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 16:26:37,983 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:37,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:26:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:26:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:26:37,984 INFO L87 Difference]: Start difference. First operand 24078 states and 33898 transitions. Second operand 11 states. [2018-11-12 16:26:50,744 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:27:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:31,814 INFO L93 Difference]: Finished difference Result 48959 states and 68778 transitions. [2018-11-12 16:27:31,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:27:31,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2018-11-12 16:27:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:31,898 INFO L225 Difference]: With dead ends: 48959 [2018-11-12 16:27:31,899 INFO L226 Difference]: Without dead ends: 24887 [2018-11-12 16:27:31,933 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:27:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24887 states. [2018-11-12 16:27:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24887 to 24882. [2018-11-12 16:27:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24882 states. [2018-11-12 16:27:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24882 states to 24882 states and 34713 transitions. [2018-11-12 16:27:32,467 INFO L78 Accepts]: Start accepts. Automaton has 24882 states and 34713 transitions. Word has length 151 [2018-11-12 16:27:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:32,468 INFO L480 AbstractCegarLoop]: Abstraction has 24882 states and 34713 transitions. [2018-11-12 16:27:32,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:27:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 24882 states and 34713 transitions. [2018-11-12 16:27:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-12 16:27:32,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:32,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:32,471 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:32,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1424344581, now seen corresponding path program 1 times [2018-11-12 16:27:32,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:32,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:32,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:32,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:32,473 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:33,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:33,132 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:33,132 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-11-12 16:27:33,133 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2807], [2809], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:27:33,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:33,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:34,121 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:27:34,121 INFO L272 AbstractInterpreter]: Visited 138 different actions 400 times. Merged at 5 different actions 9 times. Never widened. Performed 7033 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7033 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 16:27:34,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:34,148 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:27:34,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:34,149 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:27:34,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:34,171 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:27:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:34,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:27:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:34,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:27:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:35,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:27:35,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-12 16:27:35,601 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:35,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:35,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:35,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:27:35,602 INFO L87 Difference]: Start difference. First operand 24882 states and 34713 transitions. Second operand 6 states. [2018-11-12 16:27:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:53,033 INFO L93 Difference]: Finished difference Result 79740 states and 120058 transitions. [2018-11-12 16:27:53,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:27:53,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-11-12 16:27:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:53,332 INFO L225 Difference]: With dead ends: 79740 [2018-11-12 16:27:53,332 INFO L226 Difference]: Without dead ends: 55668 [2018-11-12 16:27:53,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:27:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55668 states. [2018-11-12 16:27:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55668 to 55439. [2018-11-12 16:27:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55439 states. [2018-11-12 16:27:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55439 states to 55439 states and 80912 transitions. [2018-11-12 16:27:55,678 INFO L78 Accepts]: Start accepts. Automaton has 55439 states and 80912 transitions. Word has length 165 [2018-11-12 16:27:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:55,678 INFO L480 AbstractCegarLoop]: Abstraction has 55439 states and 80912 transitions. [2018-11-12 16:27:55,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:27:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 55439 states and 80912 transitions. [2018-11-12 16:27:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-12 16:27:55,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:55,686 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:55,687 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:55,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1303044965, now seen corresponding path program 1 times [2018-11-12 16:27:55,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:55,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:55,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:55,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:55,689 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:55,993 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:27:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:27:56,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:56,435 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:56,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-12 16:27:56,437 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2807], [2809], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:27:56,442 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:56,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:56,927 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:27:56,928 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Performed 5582 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5582 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 16:27:56,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:56,935 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:27:57,478 INFO L227 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 72.31% of their original sizes. [2018-11-12 16:27:57,478 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:28:00,278 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-12 16:28:00,278 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:28:00,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:28:00,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:28:00,279 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:28:00,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:28:00,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:28:00,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:28:00,281 INFO L87 Difference]: Start difference. First operand 55439 states and 80912 transitions. Second operand 19 states. [2018-11-12 16:28:10,639 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:28:58,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 16:28:58,414 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:28:58,420 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:28:58,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:28:58 BoogieIcfgContainer [2018-11-12 16:28:58,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:28:58,421 INFO L168 Benchmark]: Toolchain (without parser) took 211718.63 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,423 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:28:58,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2489.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 376.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,425 INFO L168 Benchmark]: Boogie Preprocessor took 347.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,426 INFO L168 Benchmark]: RCFGBuilder took 10981.21 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 162.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 21.0 MB). Peak memory consumption was 672.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,427 INFO L168 Benchmark]: TraceAbstraction took 197517.81 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -426.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:28:58,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2489.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 376.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 347.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10981.21 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 162.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 21.0 MB). Peak memory consumption was 672.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197517.81 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -426.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (55439states) and FLOYD_HOARE automaton (currently 16 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (27366 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 197.4s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 181.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4088 SDtfs, 20821 SDslu, 3590 SDs, 0 SdLazy, 43030 SolverSat, 9067 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 759 GetRequests, 635 SyntacticMatches, 56 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55439occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9972970926657881 AbsIntWeakeningRatio, 0.128 AbsIntAvgWeakeningVarsNumRemoved, 7.44 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 732 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1121 NumberOfCodeBlocks, 1121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1277 ConstructedInterpolants, 0 QuantifiedInterpolants, 763620 SizeOfPredicates, 3 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 248/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown