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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:33:36,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:33:36,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:33:36,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:33:36,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:33:36,808 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:33:36,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:33:36,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:33:36,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:33:36,814 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:33:36,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:33:36,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:33:36,816 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:33:36,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:33:36,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:33:36,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:33:36,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:33:36,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:33:36,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:33:36,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:33:36,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:33:36,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:33:36,831 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:33:36,831 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:33:36,831 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:33:36,835 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:33:36,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:33:36,838 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:33:36,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:33:36,843 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:33:36,843 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:33:36,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:33:36,844 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:33:36,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:33:36,847 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:33:36,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:33:36,849 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:33:36,876 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:33:36,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:33:36,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:33:36,877 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:33:36,877 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:33:36,877 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:33:36,878 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:33:36,878 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:33:36,878 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:33:36,878 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:33:36,878 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:33:36,879 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:33:36,879 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:33:36,879 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:33:36,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:33:36,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:33:36,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:33:36,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:33:36,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:33:36,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:33:36,881 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:33:36,881 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:33:36,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:33:36,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:33:36,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:33:36,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:33:36,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:33:36,882 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:33:36,882 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:33:36,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:33:36,883 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:33:36,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:33:36,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:33:36,883 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:33:36,884 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:33:36,884 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:33:36,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:33:36,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:33:36,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:33:36,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:33:36,957 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:33:36,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c [2018-11-07 08:33:37,030 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fa162b6/877fbe3096414dd299295c0a4f9b3450/FLAG17eb1aaa1 [2018-11-07 08:33:37,712 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:33:37,713 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c [2018-11-07 08:33:37,731 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fa162b6/877fbe3096414dd299295c0a4f9b3450/FLAG17eb1aaa1 [2018-11-07 08:33:37,747 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fa162b6/877fbe3096414dd299295c0a4f9b3450 [2018-11-07 08:33:37,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:33:37,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:33:37,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:37,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:33:37,767 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:33:37,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:37" (1/1) ... [2018-11-07 08:33:37,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e4bd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:37, skipping insertion in model container [2018-11-07 08:33:37,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:37" (1/1) ... [2018-11-07 08:33:37,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:33:37,853 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:33:38,451 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:38,456 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:33:38,627 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:38,646 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:33:38,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38 WrapperNode [2018-11-07 08:33:38,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:38,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:38,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:33:38,648 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:33:38,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:38,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:33:38,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:33:38,827 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:33:38,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (1/1) ... [2018-11-07 08:33:38,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:33:38,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:33:38,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:33:38,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:33:38,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (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 [2018-11-07 08:33:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:33:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:33:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:33:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:33:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:33:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:33:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:33:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:33:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:33:43,211 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:33:43,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:43 BoogieIcfgContainer [2018-11-07 08:33:43,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:33:43,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:33:43,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:33:43,216 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:33:43,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:33:37" (1/3) ... [2018-11-07 08:33:43,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:43, skipping insertion in model container [2018-11-07 08:33:43,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:38" (2/3) ... [2018-11-07 08:33:43,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:43, skipping insertion in model container [2018-11-07 08:33:43,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:43" (3/3) ... [2018-11-07 08:33:43,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label46_true-unreach-call.c [2018-11-07 08:33:43,231 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:33:43,240 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:33:43,254 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:33:43,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:33:43,295 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:33:43,296 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:33:43,296 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:33:43,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:33:43,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:33:43,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:33:43,297 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:33:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:33:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 08:33:43,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:43,340 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:33:43,343 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:43,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash 992823241, now seen corresponding path program 1 times [2018-11-07 08:33:43,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:43,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:43,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:43,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:43,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:43,895 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:33:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:43,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:43,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:33:43,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:43,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:33:44,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:33:44,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:33:44,018 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:33:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:46,013 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 08:33:46,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:33:46,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 08:33:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:46,035 INFO L225 Difference]: With dead ends: 782 [2018-11-07 08:33:46,035 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 08:33:46,045 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 [2018-11-07 08:33:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 08:33:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 08:33:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 08:33:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 08:33:46,140 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 69 [2018-11-07 08:33:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:46,141 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 08:33:46,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:33:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 08:33:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 08:33:46,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:46,151 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:33:46,152 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:46,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash 742048031, now seen corresponding path program 1 times [2018-11-07 08:33:46,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:46,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:46,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:46,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:46,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:46,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:46,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 08:33:46,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:46,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:33:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:33:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:33:46,700 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 08:33:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:53,237 INFO L93 Difference]: Finished difference Result 1759 states and 3238 transitions. [2018-11-07 08:33:53,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 08:33:53,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2018-11-07 08:33:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:53,252 INFO L225 Difference]: With dead ends: 1759 [2018-11-07 08:33:53,252 INFO L226 Difference]: Without dead ends: 1283 [2018-11-07 08:33:53,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:33:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-07 08:33:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1037. [2018-11-07 08:33:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 08:33:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 08:33:53,370 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 144 [2018-11-07 08:33:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:53,371 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 08:33:53,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:33:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 08:33:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-11-07 08:33:53,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:53,378 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:33:53,378 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:53,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1965616979, now seen corresponding path program 1 times [2018-11-07 08:33:53,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:53,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:53,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:53,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:53,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 124 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:33:53,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:53,708 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:33:53,709 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-11-07 08:33:53,712 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:33:53,756 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:33:53,757 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:33:54,437 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:33:54,439 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:33:54,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:54,483 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:33:55,259 INFO L227 lantSequenceWeakener]: Weakened 208 states. On average, predicates are now at 73.92% of their original sizes. [2018-11-07 08:33:55,260 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:33:55,448 INFO L415 sIntCurrentIteration]: We unified 216 AI predicates to 216 [2018-11-07 08:33:55,448 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:33:55,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:33:55,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:33:55,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:55,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:33:55,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:33:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:33:55,451 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-11-07 08:34:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:45,839 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-07 08:34:45,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:34:45,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-11-07 08:34:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:45,847 INFO L225 Difference]: With dead ends: 2260 [2018-11-07 08:34:45,847 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 08:34:45,850 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:34:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 08:34:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-07 08:34:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-07 08:34:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-07 08:34:45,886 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 217 [2018-11-07 08:34:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:45,886 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-07 08:34:45,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-07 08:34:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-07 08:34:45,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:45,893 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:34:45,893 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:45,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash -645920121, now seen corresponding path program 1 times [2018-11-07 08:34:45,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:45,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:45,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:45,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:45,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:34:46,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:46,724 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:46,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-07 08:34:46,725 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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] [2018-11-07 08:34:46,735 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:46,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:47,408 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:47,409 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. [2018-11-07 08:34:47,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:47,448 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:47,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:47,449 INFO L194 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 [2018-11-07 08:34:47,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:47,469 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:47,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:49,875 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 [2018-11-07 08:34:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-11-07 08:34:50,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:34:50,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 08:34:50,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-11-07 08:34:50,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:50,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:34:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:34:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-11-07 08:34:50,455 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-11-07 08:34:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:53,778 INFO L93 Difference]: Finished difference Result 2987 states and 4934 transitions. [2018-11-07 08:34:53,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:34:53,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2018-11-07 08:34:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:53,794 INFO L225 Difference]: With dead ends: 2987 [2018-11-07 08:34:53,794 INFO L226 Difference]: Without dead ends: 1956 [2018-11-07 08:34:53,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 521 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-11-07 08:34:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2018-11-07 08:34:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1949. [2018-11-07 08:34:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-11-07 08:34:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3020 transitions. [2018-11-07 08:34:53,854 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3020 transitions. Word has length 261 [2018-11-07 08:34:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:53,855 INFO L480 AbstractCegarLoop]: Abstraction has 1949 states and 3020 transitions. [2018-11-07 08:34:53,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:34:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3020 transitions. [2018-11-07 08:34:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-11-07 08:34:53,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:53,862 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-11-07 08:34:53,863 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:53,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1933657177, now seen corresponding path program 1 times [2018-11-07 08:34:53,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:53,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:53,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:53,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:53,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:54,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:54,397 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:54,397 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-11-07 08:34:54,398 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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] [2018-11-07 08:34:54,409 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:54,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:55,034 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:55,035 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. [2018-11-07 08:34:55,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:55,075 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:55,469 INFO L227 lantSequenceWeakener]: Weakened 274 states. On average, predicates are now at 75.67% of their original sizes. [2018-11-07 08:34:55,469 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:56,232 INFO L415 sIntCurrentIteration]: We unified 276 AI predicates to 276 [2018-11-07 08:34:56,232 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:56,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:56,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:34:56,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:56,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:34:56,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:34:56,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:34:56,234 INFO L87 Difference]: Start difference. First operand 1949 states and 3020 transitions. Second operand 10 states. [2018-11-07 08:36:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:37,712 INFO L93 Difference]: Finished difference Result 4094 states and 6590 transitions. [2018-11-07 08:36:37,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:36:37,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 277 [2018-11-07 08:36:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:37,727 INFO L225 Difference]: With dead ends: 4094 [2018-11-07 08:36:37,727 INFO L226 Difference]: Without dead ends: 2341 [2018-11-07 08:36:37,736 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:36:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2018-11-07 08:36:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2334. [2018-11-07 08:36:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2018-11-07 08:36:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3487 transitions. [2018-11-07 08:36:37,797 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3487 transitions. Word has length 277 [2018-11-07 08:36:37,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:37,798 INFO L480 AbstractCegarLoop]: Abstraction has 2334 states and 3487 transitions. [2018-11-07 08:36:37,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:36:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3487 transitions. [2018-11-07 08:36:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-07 08:36:37,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:37,807 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-11-07 08:36:37,807 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:37,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2092355643, now seen corresponding path program 1 times [2018-11-07 08:36:37,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:37,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:37,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:37,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:37,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 08:36:38,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:38,122 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:38,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 293 with the following transitions: [2018-11-07 08:36:38,122 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [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] [2018-11-07 08:36:38,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:38,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:38,366 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:38,367 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. [2018-11-07 08:36:38,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:38,370 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:38,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:38,370 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 08:36:38,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:38,381 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:38,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:38,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:39,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:39,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-07 08:36:39,174 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:39,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 08:36:39,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 08:36:39,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:36:39,175 INFO L87 Difference]: Start difference. First operand 2334 states and 3487 transitions. Second operand 11 states. [2018-11-07 08:36:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:55,684 INFO L93 Difference]: Finished difference Result 15669 states and 27813 transitions. [2018-11-07 08:36:55,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-11-07 08:36:55,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 292 [2018-11-07 08:36:55,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:55,823 INFO L225 Difference]: With dead ends: 15669 [2018-11-07 08:36:55,823 INFO L226 Difference]: Without dead ends: 13530 [2018-11-07 08:36:55,884 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 609 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=937, Invalid=4033, Unknown=0, NotChecked=0, Total=4970 [2018-11-07 08:36:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2018-11-07 08:36:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 13022. [2018-11-07 08:36:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13022 states. [2018-11-07 08:36:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13022 states to 13022 states and 20132 transitions. [2018-11-07 08:36:56,379 INFO L78 Accepts]: Start accepts. Automaton has 13022 states and 20132 transitions. Word has length 292 [2018-11-07 08:36:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:56,380 INFO L480 AbstractCegarLoop]: Abstraction has 13022 states and 20132 transitions. [2018-11-07 08:36:56,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 08:36:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13022 states and 20132 transitions. [2018-11-07 08:36:56,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 08:36:56,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:56,417 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:36:56,418 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:56,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:56,418 INFO L82 PathProgramCache]: Analyzing trace with hash 625405564, now seen corresponding path program 1 times [2018-11-07 08:36:56,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:56,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:56,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:56,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:56,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 08:36:56,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:56,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:56,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-11-07 08:36:56,820 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [614], [615], [626], [630], [634], [638], [642], [646], [650], [654], [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] [2018-11-07 08:36:56,825 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:56,825 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:57,128 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:57,128 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. [2018-11-07 08:36:57,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:57,135 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:57,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:57,135 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:36:57,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:57,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:57,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:58,068 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-11-07 08:36:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 125 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:59,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:59,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:59,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 17 [2018-11-07 08:36:59,929 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:59,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 08:36:59,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 08:36:59,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=229, Unknown=1, NotChecked=0, Total=272 [2018-11-07 08:36:59,931 INFO L87 Difference]: Start difference. First operand 13022 states and 20132 transitions. Second operand 15 states. [2018-11-07 08:37:11,152 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 08:37:36,947 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 28 Received shutdown request... [2018-11-07 08:37:39,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-07 08:37:39,424 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:37:39,433 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:37:39,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:37:39 BoogieIcfgContainer [2018-11-07 08:37:39,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:37:39,435 INFO L168 Benchmark]: Toolchain (without parser) took 241674.59 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 481.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:39,436 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:37:39,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 884.73 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:39,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -857.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:39,439 INFO L168 Benchmark]: Boogie Preprocessor took 136.79 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. [2018-11-07 08:37:39,439 INFO L168 Benchmark]: RCFGBuilder took 4247.67 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: 171.6 MB). Peak memory consumption was 171.6 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:39,441 INFO L168 Benchmark]: TraceAbstraction took 236220.92 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 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 354.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:39,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 884.73 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -857.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.79 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 4247.67 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: 171.6 MB). Peak memory consumption was 171.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236220.92 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 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 354.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (13022states) and FLOYD_HOARE automaton (currently 48 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (7329 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 236.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 220.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1709 SDtfs, 10760 SDslu, 2786 SDs, 0 SdLazy, 22240 SolverSat, 3531 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 177.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2391 GetRequests, 2211 SyntacticMatches, 12 SemanticMatches, 168 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 23.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13022occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.997720087735994 AbsIntWeakeningRatio, 0.11382113821138211 AbsIntAvgWeakeningVarsNumRemoved, 18.335365853658537 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 775 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 2415 NumberOfCodeBlocks, 2415 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3256 ConstructedInterpolants, 10 QuantifiedInterpolants, 3002523 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1745/2388 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown