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/Problem17_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:21:45,011 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:21:45,013 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:21:45,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:21:45,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:21:45,032 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:21:45,034 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:21:45,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:21:45,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:21:45,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:21:45,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:21:45,045 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:21:45,046 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:21:45,053 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:21:45,054 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:21:45,058 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:21:45,060 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:21:45,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:21:45,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:21:45,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:21:45,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:21:45,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:21:45,078 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:21:45,078 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:21:45,078 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:21:45,079 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:21:45,080 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:21:45,083 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:21:45,084 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:21:45,086 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:21:45,088 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:21:45,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:21:45,089 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:21:45,089 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:21:45,090 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:21:45,093 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:21:45,093 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 [2018-11-07 18:21:45,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:21:45,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:21:45,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:21:45,128 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:21:45,128 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:21:45,128 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:21:45,129 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:21:45,129 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:21:45,129 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:21:45,129 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:21:45,129 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:21:45,130 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:21:45,130 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:21:45,132 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:21:45,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:21:45,132 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:21:45,132 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:21:45,132 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:21:45,133 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:21:45,133 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:21:45,133 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:21:45,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:21:45,133 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:21:45,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:21:45,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:21:45,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:21:45,135 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:21:45,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:21:45,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:21:45,136 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:21:45,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:21:45,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:21:45,137 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:21:45,137 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:21:45,137 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:21:45,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:21:45,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:21:45,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:21:45,227 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:21:45,228 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:21:45,229 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-11-07 18:21:45,300 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415a4b84e/e83147514160466fbdbc976ce7c5d6c0/FLAGa49911ebe [2018-11-07 18:21:46,006 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:21:46,007 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-11-07 18:21:46,039 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415a4b84e/e83147514160466fbdbc976ce7c5d6c0/FLAGa49911ebe [2018-11-07 18:21:46,057 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415a4b84e/e83147514160466fbdbc976ce7c5d6c0 [2018-11-07 18:21:46,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:21:46,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:21:46,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:21:46,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:21:46,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:21:46,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:21:46" (1/1) ... [2018-11-07 18:21:46,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e22a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:46, skipping insertion in model container [2018-11-07 18:21:46,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:21:46" (1/1) ... [2018-11-07 18:21:46,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:21:46,215 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:21:47,245 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:21:47,251 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:21:47,700 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:21:47,724 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:21:47,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47 WrapperNode [2018-11-07 18:21:47,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:21:47,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:21:47,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:21:47,727 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:21:47,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:47,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:47,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:21:47,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:21:47,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:21:47,977 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:21:47,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:47,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (1/1) ... [2018-11-07 18:21:48,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:21:48,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:21:48,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:21:48,207 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:21:48,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (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 18:21:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:21:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:21:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:21:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:21:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:21:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:21:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:21:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:21:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:21:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:21:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:21:56,849 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:21:56,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:21:56 BoogieIcfgContainer [2018-11-07 18:21:56,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:21:56,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:21:56,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:21:56,855 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:21:56,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:21:46" (1/3) ... [2018-11-07 18:21:56,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a588b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:21:56, skipping insertion in model container [2018-11-07 18:21:56,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:47" (2/3) ... [2018-11-07 18:21:56,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a588b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:21:56, skipping insertion in model container [2018-11-07 18:21:56,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:21:56" (3/3) ... [2018-11-07 18:21:56,859 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label37_false-unreach-call.c [2018-11-07 18:21:56,870 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:21:56,880 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:21:56,899 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:21:56,943 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:21:56,943 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:21:56,944 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:21:56,944 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:21:56,944 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:21:56,944 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:21:56,944 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:21:56,944 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:21:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 18:21:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 18:21:56,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:56,989 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] [2018-11-07 18:21:56,992 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:56,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:56,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1359404802, now seen corresponding path program 1 times [2018-11-07 18:21:57,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:57,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:57,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:57,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:57,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:57,398 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 18:21:57,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:21:57,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:21:57,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:57,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:21:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:21:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:21:57,431 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 18:22:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:05,957 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-11-07 18:22:05,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:22:05,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-07 18:22:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:06,004 INFO L225 Difference]: With dead ends: 2137 [2018-11-07 18:22:06,004 INFO L226 Difference]: Without dead ends: 1527 [2018-11-07 18:22:06,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:22:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-11-07 18:22:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-11-07 18:22:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-11-07 18:22:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-11-07 18:22:06,198 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 25 [2018-11-07 18:22:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:06,198 INFO L480 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-11-07 18:22:06,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:22:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-11-07 18:22:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 18:22:06,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:06,205 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:22:06,205 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:06,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash -72391217, now seen corresponding path program 1 times [2018-11-07 18:22:06,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:06,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:06,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:06,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:06,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:22:06,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:22:06,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:22:06,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:22:06,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:22:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:22:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:22:06,547 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-11-07 18:22:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:14,369 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-11-07 18:22:14,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:22:14,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-11-07 18:22:14,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:14,395 INFO L225 Difference]: With dead ends: 4413 [2018-11-07 18:22:14,395 INFO L226 Difference]: Without dead ends: 2906 [2018-11-07 18:22:14,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:22:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-11-07 18:22:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-11-07 18:22:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-11-07 18:22:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-11-07 18:22:14,496 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 97 [2018-11-07 18:22:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:14,497 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-11-07 18:22:14,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:22:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-11-07 18:22:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 18:22:14,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:14,501 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:22:14,502 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:14,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 902926633, now seen corresponding path program 1 times [2018-11-07 18:22:14,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:14,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:14,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:14,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:14,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:22:14,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:14,777 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:22:14,778 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 101 with the following transitions: [2018-11-07 18:22:14,780 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:22:14,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:22:14,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:22:15,295 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:22:15,963 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:22:15,965 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:22:16,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:16,010 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:22:16,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:16,010 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 18:22:16,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:16,031 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:22:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:16,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:32,522 WARN L179 SmtUtils]: Spent 15.71 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-07 18:22:34,902 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 23 [2018-11-07 18:22:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:22:34,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:35,753 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-07 18:22:38,219 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-11-07 18:22:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:22:38,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 18:22:38,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 18:22:38,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:22:38,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:22:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:22:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-07 18:22:38,655 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-11-07 18:22:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:58,708 INFO L93 Difference]: Finished difference Result 11147 states and 17010 transitions. [2018-11-07 18:22:58,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:22:58,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 18:22:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:58,769 INFO L225 Difference]: With dead ends: 11147 [2018-11-07 18:22:58,769 INFO L226 Difference]: Without dead ends: 8280 [2018-11-07 18:22:58,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-07 18:22:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-07 18:22:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8241. [2018-11-07 18:22:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8241 states. [2018-11-07 18:22:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 12219 transitions. [2018-11-07 18:22:59,059 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 12219 transitions. Word has length 100 [2018-11-07 18:22:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:59,059 INFO L480 AbstractCegarLoop]: Abstraction has 8241 states and 12219 transitions. [2018-11-07 18:22:59,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:22:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 12219 transitions. [2018-11-07 18:22:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 18:22:59,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:59,068 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:22:59,068 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:59,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1080098981, now seen corresponding path program 1 times [2018-11-07 18:22:59,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:59,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:59,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:59,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:59,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:59,429 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:22:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:22:59,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:22:59,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:22:59,549 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:22:59,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:22:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:22:59,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:22:59,551 INFO L87 Difference]: Start difference. First operand 8241 states and 12219 transitions. Second operand 6 states. [2018-11-07 18:23:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:04,089 INFO L93 Difference]: Finished difference Result 20122 states and 30328 transitions. [2018-11-07 18:23:04,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:23:04,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 18:23:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:04,164 INFO L225 Difference]: With dead ends: 20122 [2018-11-07 18:23:04,165 INFO L226 Difference]: Without dead ends: 11887 [2018-11-07 18:23:04,203 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 [2018-11-07 18:23:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2018-11-07 18:23:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11811. [2018-11-07 18:23:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11811 states. [2018-11-07 18:23:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 15398 transitions. [2018-11-07 18:23:04,488 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 15398 transitions. Word has length 175 [2018-11-07 18:23:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:04,489 INFO L480 AbstractCegarLoop]: Abstraction has 11811 states and 15398 transitions. [2018-11-07 18:23:04,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:23:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 15398 transitions. [2018-11-07 18:23:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 18:23:04,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:04,493 INFO L375 BasicCegarLoop]: trace histogram [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, 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 18:23:04,493 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:04,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 109060680, now seen corresponding path program 1 times [2018-11-07 18:23:04,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:04,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:04,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 18:23:04,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:04,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:23:04,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:04,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:23:04,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:23:04,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:04,724 INFO L87 Difference]: Start difference. First operand 11811 states and 15398 transitions. Second operand 3 states. [2018-11-07 18:23:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:10,731 INFO L93 Difference]: Finished difference Result 31083 states and 41354 transitions. [2018-11-07 18:23:10,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:23:10,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-11-07 18:23:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:10,818 INFO L225 Difference]: With dead ends: 31083 [2018-11-07 18:23:10,818 INFO L226 Difference]: Without dead ends: 19278 [2018-11-07 18:23:10,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2018-11-07 18:23:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19277. [2018-11-07 18:23:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19277 states. [2018-11-07 18:23:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19277 states to 19277 states and 24007 transitions. [2018-11-07 18:23:11,492 INFO L78 Accepts]: Start accepts. Automaton has 19277 states and 24007 transitions. Word has length 189 [2018-11-07 18:23:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:11,493 INFO L480 AbstractCegarLoop]: Abstraction has 19277 states and 24007 transitions. [2018-11-07 18:23:11,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:23:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19277 states and 24007 transitions. [2018-11-07 18:23:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 18:23:11,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:11,501 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:11,502 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:11,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -596999475, now seen corresponding path program 1 times [2018-11-07 18:23:11,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:11,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:11,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:11,795 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:23:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:23:12,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:12,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:23:12,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 18:23:12,093 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:23:12,100 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:23:12,101 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:23:12,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:23:13,001 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:23:13,001 INFO L272 AbstractInterpreter]: Visited 119 different actions 343 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:23:13,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:13,036 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:23:13,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:13,036 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 18:23:13,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:13,050 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:23:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:13,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:23:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:23:13,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:23:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:23:13,985 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:23:13,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 18:23:13,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:13,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:23:13,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:23:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:23:13,987 INFO L87 Difference]: Start difference. First operand 19277 states and 24007 transitions. Second operand 3 states. [2018-11-07 18:23:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:18,023 INFO L93 Difference]: Finished difference Result 38548 states and 48123 transitions. [2018-11-07 18:23:18,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:23:18,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-07 18:23:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:18,087 INFO L225 Difference]: With dead ends: 38548 [2018-11-07 18:23:18,087 INFO L226 Difference]: Without dead ends: 19277 [2018-11-07 18:23:18,141 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 420 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:23:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19277 states. [2018-11-07 18:23:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19277 to 18409. [2018-11-07 18:23:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18409 states. [2018-11-07 18:23:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 22095 transitions. [2018-11-07 18:23:18,728 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 22095 transitions. Word has length 210 [2018-11-07 18:23:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:18,728 INFO L480 AbstractCegarLoop]: Abstraction has 18409 states and 22095 transitions. [2018-11-07 18:23:18,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:23:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 22095 transitions. [2018-11-07 18:23:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-07 18:23:18,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:18,742 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:23:18,743 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:18,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash 337738264, now seen corresponding path program 1 times [2018-11-07 18:23:18,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:18,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:18,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:18,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:18,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-11-07 18:23:19,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:19,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:23:19,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:19,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:23:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:23:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:19,016 INFO L87 Difference]: Start difference. First operand 18409 states and 22095 transitions. Second operand 3 states. [2018-11-07 18:23:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:25,164 INFO L93 Difference]: Finished difference Result 42982 states and 52540 transitions. [2018-11-07 18:23:25,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:23:25,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 309 [2018-11-07 18:23:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:25,246 INFO L225 Difference]: With dead ends: 42982 [2018-11-07 18:23:25,247 INFO L226 Difference]: Without dead ends: 24579 [2018-11-07 18:23:25,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24579 states. [2018-11-07 18:23:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24579 to 24577. [2018-11-07 18:23:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24577 states. [2018-11-07 18:23:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24577 states to 24577 states and 29271 transitions. [2018-11-07 18:23:25,710 INFO L78 Accepts]: Start accepts. Automaton has 24577 states and 29271 transitions. Word has length 309 [2018-11-07 18:23:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:25,711 INFO L480 AbstractCegarLoop]: Abstraction has 24577 states and 29271 transitions. [2018-11-07 18:23:25,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:23:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 24577 states and 29271 transitions. [2018-11-07 18:23:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-07 18:23:25,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:25,733 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:25,733 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:25,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash 948292860, now seen corresponding path program 1 times [2018-11-07 18:23:25,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:25,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:25,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:25,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:25,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-07 18:23:26,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:26,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:23:26,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:26,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:23:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:23:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:23:26,171 INFO L87 Difference]: Start difference. First operand 24577 states and 29271 transitions. Second operand 4 states. [2018-11-07 18:23:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:34,797 INFO L93 Difference]: Finished difference Result 73750 states and 90918 transitions. [2018-11-07 18:23:34,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:23:34,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-11-07 18:23:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:34,960 INFO L225 Difference]: With dead ends: 73750 [2018-11-07 18:23:34,960 INFO L226 Difference]: Without dead ends: 49179 [2018-11-07 18:23:35,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:23:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49179 states. [2018-11-07 18:23:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49179 to 47868. [2018-11-07 18:23:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47868 states. [2018-11-07 18:23:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47868 states to 47868 states and 56251 transitions. [2018-11-07 18:23:35,857 INFO L78 Accepts]: Start accepts. Automaton has 47868 states and 56251 transitions. Word has length 350 [2018-11-07 18:23:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:35,858 INFO L480 AbstractCegarLoop]: Abstraction has 47868 states and 56251 transitions. [2018-11-07 18:23:35,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:23:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 47868 states and 56251 transitions. [2018-11-07 18:23:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-07 18:23:35,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:35,907 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:35,907 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:35,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash -445500387, now seen corresponding path program 1 times [2018-11-07 18:23:35,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:35,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:35,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:35,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:35,909 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:23:37,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:37,067 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:23:37,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-07 18:23:37,068 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:23:37,077 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:23:37,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:23:37,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:23:39,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:23:39,772 INFO L272 AbstractInterpreter]: Visited 262 different actions 1309 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 18:23:39,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:39,812 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:23:39,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:39,813 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 18:23:39,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:39,827 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:23:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:39,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:23:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:23:40,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:23:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:23:41,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:23:41,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 18:23:41,023 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:23:41,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:23:41,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:23:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:23:41,025 INFO L87 Difference]: Start difference. First operand 47868 states and 56251 transitions. Second operand 7 states. [2018-11-07 18:23:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:52,089 INFO L93 Difference]: Finished difference Result 124156 states and 152160 transitions. [2018-11-07 18:23:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:23:52,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2018-11-07 18:23:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:52,381 INFO L225 Difference]: With dead ends: 124156 [2018-11-07 18:23:52,381 INFO L226 Difference]: Without dead ends: 76294 [2018-11-07 18:23:52,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 906 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-11-07 18:23:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76294 states. [2018-11-07 18:23:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76294 to 72642. [2018-11-07 18:23:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72642 states. [2018-11-07 18:23:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72642 states to 72642 states and 83596 transitions. [2018-11-07 18:23:53,893 INFO L78 Accepts]: Start accepts. Automaton has 72642 states and 83596 transitions. Word has length 452 [2018-11-07 18:23:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:53,894 INFO L480 AbstractCegarLoop]: Abstraction has 72642 states and 83596 transitions. [2018-11-07 18:23:53,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:23:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 72642 states and 83596 transitions. [2018-11-07 18:23:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-07 18:23:53,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:53,954 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:53,954 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:53,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:53,955 INFO L82 PathProgramCache]: Analyzing trace with hash 258739091, now seen corresponding path program 1 times [2018-11-07 18:23:53,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:53,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:53,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:53,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:53,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:54,582 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-07 18:23:54,973 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 18:23:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 60 proven. 247 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:23:55,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:55,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:23:55,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-07 18:23:55,494 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:23:55,506 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:23:55,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:23:55,552 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:23:56,548 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:23:56,548 INFO L272 AbstractInterpreter]: Visited 262 different actions 772 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:23:56,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:56,586 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:23:56,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:56,586 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:23:56,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:56,599 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:23:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:56,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:23:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:23:57,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:23:57,704 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-11-07 18:23:57,821 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2018-11-07 18:23:57,940 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-07 18:23:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 132 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 18:23:58,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:23:58,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2018-11-07 18:23:58,219 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:23:58,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 18:23:58,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 18:23:58,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:23:58,221 INFO L87 Difference]: Start difference. First operand 72642 states and 83596 transitions. Second operand 13 states. [2018-11-07 18:24:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:12,804 INFO L93 Difference]: Finished difference Result 168281 states and 193888 transitions. [2018-11-07 18:24:12,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 18:24:12,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 462 [2018-11-07 18:24:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:12,943 INFO L225 Difference]: With dead ends: 168281 [2018-11-07 18:24:12,943 INFO L226 Difference]: Without dead ends: 52302 [2018-11-07 18:24:13,104 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 960 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=553, Invalid=2417, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 18:24:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52302 states. [2018-11-07 18:24:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52302 to 48766. [2018-11-07 18:24:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48766 states. [2018-11-07 18:24:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48766 states to 48766 states and 54985 transitions. [2018-11-07 18:24:13,844 INFO L78 Accepts]: Start accepts. Automaton has 48766 states and 54985 transitions. Word has length 462 [2018-11-07 18:24:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:13,844 INFO L480 AbstractCegarLoop]: Abstraction has 48766 states and 54985 transitions. [2018-11-07 18:24:13,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 18:24:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 48766 states and 54985 transitions. [2018-11-07 18:24:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-07 18:24:13,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:13,869 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:13,870 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:13,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1262653227, now seen corresponding path program 1 times [2018-11-07 18:24:13,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:13,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:13,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:13,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:13,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:14,369 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:24:14,778 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 18:24:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 60 proven. 316 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:24:15,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:24:15,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:24:15,479 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-11-07 18:24:15,480 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1626], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:24:15,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:24:15,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:24:15,536 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:24:17,341 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:24:17,342 INFO L272 AbstractInterpreter]: Visited 262 different actions 1303 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 18:24:17,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:17,356 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:24:17,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:24:17,356 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:24:17,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:17,366 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:24:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:17,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:24:17,876 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 395 DAG size of output: 55 [2018-11-07 18:24:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 18:24:18,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:24:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 18:24:19,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:24:19,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2018-11-07 18:24:19,330 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:24:19,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 18:24:19,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 18:24:19,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:24:19,332 INFO L87 Difference]: Start difference. First operand 48766 states and 54985 transitions. Second operand 13 states. [2018-11-07 18:24:19,668 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-07 18:24:20,181 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-11-07 18:24:22,604 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-11-07 18:24:22,796 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-11-07 18:24:23,128 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-11-07 18:24:38,372 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 Received shutdown request... [2018-11-07 18:25:43,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-07 18:25:43,848 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:25:43,853 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:25:43,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:25:43 BoogieIcfgContainer [2018-11-07 18:25:43,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:25:43,855 INFO L168 Benchmark]: Toolchain (without parser) took 237784.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,856 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 18:25:43,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1652.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 250.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -974.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,858 INFO L168 Benchmark]: Boogie Preprocessor took 229.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,865 INFO L168 Benchmark]: RCFGBuilder took 8643.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 488.2 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,866 INFO L168 Benchmark]: TraceAbstraction took 227002.69 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -897.2 MB). Peak memory consumption was 847.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:25:43,870 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 1652.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 250.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -974.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 229.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8643.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 488.2 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227002.69 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -897.2 MB). Peak memory consumption was 847.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 62). Cancelled while BasicCegarLoop was constructing difference of abstraction (48766states) and FLOYD_HOARE automaton (currently 35 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (35057 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 177.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4878 SDtfs, 27132 SDslu, 3603 SDs, 0 SdLazy, 38732 SolverSat, 9259 SolverUnsat, 93 SolverUnknown, 0 SolverNotchecked, 156.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3714 GetRequests, 3555 SyntacticMatches, 15 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72642occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 9532 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 32.6s InterpolantComputationTime, 4629 NumberOfCodeBlocks, 4629 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6350 ConstructedInterpolants, 106 QuantifiedInterpolants, 12227012 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2790 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 3227/4023 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown