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_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:18:43,060 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:18:43,062 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:18:43,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:18:43,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:18:43,077 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:18:43,079 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:18:43,081 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:18:43,082 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:18:43,083 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:18:43,086 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:18:43,087 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:18:43,088 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:18:43,089 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:18:43,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:18:43,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:18:43,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:18:43,095 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:18:43,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:18:43,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:18:43,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:18:43,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:18:43,103 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:18:43,104 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:18:43,104 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:18:43,105 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:18:43,106 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:18:43,107 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:18:43,107 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:18:43,108 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:18:43,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:18:43,109 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:18:43,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:18:43,110 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:18:43,111 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:18:43,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:18:43,112 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 18:18:43,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:18:43,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:18:43,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:18:43,136 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:18:43,137 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:18:43,137 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:18:43,137 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:18:43,137 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:18:43,137 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:18:43,138 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:18:43,138 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:18:43,138 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:18:43,138 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:18:43,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:18:43,139 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:18:43,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:18:43,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:18:43,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:18:43,140 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:18:43,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:18:43,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:18:43,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:18:43,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:18:43,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:18:43,141 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:18:43,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:18:43,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:18:43,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:18:43,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:18:43,142 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:18:43,142 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:18:43,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:18:43,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:18:43,143 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:18:43,143 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:18:43,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:18:43,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:18:43,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:18:43,212 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:18:43,213 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:18:43,214 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07_false-unreach-call.c [2018-11-07 18:18:43,282 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331610b08/8f93d11729dd45cea99280c2ebed9f69/FLAGc71769e89 [2018-11-07 18:18:44,062 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:18:44,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label07_false-unreach-call.c [2018-11-07 18:18:44,098 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331610b08/8f93d11729dd45cea99280c2ebed9f69/FLAGc71769e89 [2018-11-07 18:18:44,115 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331610b08/8f93d11729dd45cea99280c2ebed9f69 [2018-11-07 18:18:44,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:18:44,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:18:44,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:18:44,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:18:44,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:18:44,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:18:44" (1/1) ... [2018-11-07 18:18:44,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:44, skipping insertion in model container [2018-11-07 18:18:44,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:18:44" (1/1) ... [2018-11-07 18:18:44,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:18:44,273 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:18:45,220 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:18:45,225 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:18:45,659 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:18:45,684 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:18:45,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45 WrapperNode [2018-11-07 18:18:45,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:18:45,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:18:45,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:18:45,686 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:18:45,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:45,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:45,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:18:45,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:18:45,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:18:45,975 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:18:45,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:45,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (1/1) ... [2018-11-07 18:18:46,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:18:46,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:18:46,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:18:46,187 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:18:46,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (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 18:18:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:18:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:18:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:18:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:18:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:18:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:18:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:18:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:18:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:18:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:18:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:18:55,002 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:18:55,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:18:55 BoogieIcfgContainer [2018-11-07 18:18:55,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:18:55,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:18:55,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:18:55,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:18:55,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:18:44" (1/3) ... [2018-11-07 18:18:55,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f328bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:18:55, skipping insertion in model container [2018-11-07 18:18:55,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:18:45" (2/3) ... [2018-11-07 18:18:55,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f328bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:18:55, skipping insertion in model container [2018-11-07 18:18:55,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:18:55" (3/3) ... [2018-11-07 18:18:55,012 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label07_false-unreach-call.c [2018-11-07 18:18:55,022 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:18:55,033 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:18:55,051 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:18:55,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:18:55,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:18:55,097 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:18:55,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:18:55,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:18:55,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:18:55,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:18:55,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:18:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 18:18:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-07 18:18:55,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:55,152 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:18:55,155 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:55,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -87983404, now seen corresponding path program 1 times [2018-11-07 18:18:55,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:55,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:55,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:55,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:55,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:55,682 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 18:18:55,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:18:55,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:18:55,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:55,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:18:55,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:18:55,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:18:55,744 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 18:19:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:04,392 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-11-07 18:19:04,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:19:04,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-07 18:19:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:04,427 INFO L225 Difference]: With dead ends: 2125 [2018-11-07 18:19:04,428 INFO L226 Difference]: Without dead ends: 1515 [2018-11-07 18:19:04,439 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 18:19:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-11-07 18:19:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-11-07 18:19:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-11-07 18:19:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-11-07 18:19:04,596 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 34 [2018-11-07 18:19:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:04,596 INFO L480 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-11-07 18:19:04,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:19:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-11-07 18:19:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-07 18:19:04,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:04,603 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:04,604 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:04,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1635059426, now seen corresponding path program 1 times [2018-11-07 18:19:04,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:04,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:04,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:04,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:04,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:19:05,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:19:05,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:19:05,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:05,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:19:05,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:19:05,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:19:05,015 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-11-07 18:19:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:11,708 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-11-07 18:19:11,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:19:11,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-11-07 18:19:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:11,728 INFO L225 Difference]: With dead ends: 3017 [2018-11-07 18:19:11,728 INFO L226 Difference]: Without dead ends: 1980 [2018-11-07 18:19:11,733 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 18:19:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-11-07 18:19:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-11-07 18:19:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-11-07 18:19:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-11-07 18:19:11,824 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 106 [2018-11-07 18:19:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:11,825 INFO L480 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-11-07 18:19:11,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:19:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-11-07 18:19:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 18:19:11,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:11,832 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:11,832 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:11,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash -697579286, now seen corresponding path program 1 times [2018-11-07 18:19:11,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:11,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:11,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:11,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:11,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:19:12,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:12,129 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:12,130 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 110 with the following transitions: [2018-11-07 18:19:12,132 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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 18:19:12,178 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:12,178 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:12,646 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:13,346 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:19:13,348 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 18:19:13,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:13,394 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:19:13,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:13,394 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 18:19:13,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:13,416 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:19:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:13,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:19:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:19:18,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:19:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:19:18,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 18:19:18,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 18:19:18,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:18,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:19:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:19:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 18:19:18,660 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 3 states. [2018-11-07 18:19:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:26,936 INFO L93 Difference]: Finished difference Result 4803 states and 7423 transitions. [2018-11-07 18:19:26,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:19:26,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2018-11-07 18:19:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:26,957 INFO L225 Difference]: With dead ends: 4803 [2018-11-07 18:19:26,957 INFO L226 Difference]: Without dead ends: 2855 [2018-11-07 18:19:26,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 18:19:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2018-11-07 18:19:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2852. [2018-11-07 18:19:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2852 states. [2018-11-07 18:19:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4198 transitions. [2018-11-07 18:19:27,066 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4198 transitions. Word has length 109 [2018-11-07 18:19:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:27,066 INFO L480 AbstractCegarLoop]: Abstraction has 2852 states and 4198 transitions. [2018-11-07 18:19:27,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:19:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4198 transitions. [2018-11-07 18:19:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 18:19:27,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:27,070 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:27,071 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:27,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash 666938066, now seen corresponding path program 1 times [2018-11-07 18:19:27,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:27,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:27,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:27,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:27,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:27,328 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:19:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:19:27,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:19:27,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:19:27,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:27,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:19:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:19:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:19:27,473 INFO L87 Difference]: Start difference. First operand 2852 states and 4198 transitions. Second operand 6 states. [2018-11-07 18:19:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:31,641 INFO L93 Difference]: Finished difference Result 7097 states and 10487 transitions. [2018-11-07 18:19:31,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:19:31,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 18:19:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:31,666 INFO L225 Difference]: With dead ends: 7097 [2018-11-07 18:19:31,667 INFO L226 Difference]: Without dead ends: 4251 [2018-11-07 18:19:31,679 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 18:19:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2018-11-07 18:19:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4216. [2018-11-07 18:19:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4216 states. [2018-11-07 18:19:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 5447 transitions. [2018-11-07 18:19:31,784 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 5447 transitions. Word has length 114 [2018-11-07 18:19:31,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:31,785 INFO L480 AbstractCegarLoop]: Abstraction has 4216 states and 5447 transitions. [2018-11-07 18:19:31,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:19:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 5447 transitions. [2018-11-07 18:19:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 18:19:31,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:31,789 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:19:31,789 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:31,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -807827619, now seen corresponding path program 1 times [2018-11-07 18:19:31,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:31,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:31,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:31,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:31,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 99 proven. 35 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:19:32,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:32,515 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:32,516 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 18:19:32,516 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:19:32,522 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:32,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:32,645 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:33,548 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:19:33,548 INFO L272 AbstractInterpreter]: Visited 97 different actions 382 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:19:33,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:33,586 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:19:33,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:33,586 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 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 18:19:33,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:33,599 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:19:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:33,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:19:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:19:34,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:19:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:19:34,531 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:34,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 18:19:34,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:34,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:19:34,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:19:34,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:19:34,533 INFO L87 Difference]: Start difference. First operand 4216 states and 5447 transitions. Second operand 3 states. [2018-11-07 18:19:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:37,095 INFO L93 Difference]: Finished difference Result 8426 states and 10906 transitions. [2018-11-07 18:19:37,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:19:37,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-11-07 18:19:37,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:37,126 INFO L225 Difference]: With dead ends: 8426 [2018-11-07 18:19:37,126 INFO L226 Difference]: Without dead ends: 4216 [2018-11-07 18:19:37,144 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 418 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:19:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2018-11-07 18:19:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4216. [2018-11-07 18:19:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4216 states. [2018-11-07 18:19:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 5183 transitions. [2018-11-07 18:19:37,239 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 5183 transitions. Word has length 209 [2018-11-07 18:19:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:37,241 INFO L480 AbstractCegarLoop]: Abstraction has 4216 states and 5183 transitions. [2018-11-07 18:19:37,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:19:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 5183 transitions. [2018-11-07 18:19:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 18:19:37,245 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:37,245 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:19:37,245 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:37,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:37,246 INFO L82 PathProgramCache]: Analyzing trace with hash 158332413, now seen corresponding path program 1 times [2018-11-07 18:19:37,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:37,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:37,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:37,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:37,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 18:19:38,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:38,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:38,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-07 18:19:38,157 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1211], [1212], [1216], [1220], [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 18:19:38,173 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:38,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:38,332 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:38,336 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:19:38,336 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 18:19:38,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:38,379 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:19:38,771 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 75.24% of their original sizes. [2018-11-07 18:19:38,772 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:19:39,149 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-07 18:19:39,150 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:19:39,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:39,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-11-07 18:19:39,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:39,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:19:39,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:19:39,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:19:39,152 INFO L87 Difference]: Start difference. First operand 4216 states and 5183 transitions. Second operand 8 states. [2018-11-07 18:20:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:20:15,421 INFO L93 Difference]: Finished difference Result 8862 states and 10835 transitions. [2018-11-07 18:20:15,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:20:15,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2018-11-07 18:20:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:20:15,438 INFO L225 Difference]: With dead ends: 8862 [2018-11-07 18:20:15,438 INFO L226 Difference]: Without dead ends: 4652 [2018-11-07 18:20:15,447 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:20:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2018-11-07 18:20:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4650. [2018-11-07 18:20:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4650 states. [2018-11-07 18:20:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5629 transitions. [2018-11-07 18:20:15,539 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5629 transitions. Word has length 216 [2018-11-07 18:20:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:20:15,540 INFO L480 AbstractCegarLoop]: Abstraction has 4650 states and 5629 transitions. [2018-11-07 18:20:15,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:20:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5629 transitions. [2018-11-07 18:20:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-07 18:20:15,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:15,546 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:20:15,546 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:15,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:15,546 INFO L82 PathProgramCache]: Analyzing trace with hash -222317973, now seen corresponding path program 1 times [2018-11-07 18:20:15,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:15,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:15,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:15,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:15,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:15,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:20:15,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:20:15,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-11-07 18:20:15,835 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:20:15,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:20:15,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:20:15,884 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:20:16,551 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:20:16,552 INFO L272 AbstractInterpreter]: Visited 98 different actions 577 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:20:16,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:16,557 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:20:16,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:20:16,557 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 18:20:16,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:16,566 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:20:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:16,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:20:19,161 WARN L179 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 419 DAG size of output: 21 [2018-11-07 18:20:21,527 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 18:20:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 203 proven. 25 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:22,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:20:23,460 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2018-11-07 18:20:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:23,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:20:23,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2018-11-07 18:20:23,863 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:20:23,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:20:23,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:20:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 18:20:23,865 INFO L87 Difference]: Start difference. First operand 4650 states and 5629 transitions. Second operand 9 states. [2018-11-07 18:20:31,482 WARN L179 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-11-07 18:20:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:20:54,543 INFO L93 Difference]: Finished difference Result 15811 states and 20034 transitions. [2018-11-07 18:20:54,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 18:20:54,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2018-11-07 18:20:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:20:54,580 INFO L225 Difference]: With dead ends: 15811 [2018-11-07 18:20:54,580 INFO L226 Difference]: Without dead ends: 11601 [2018-11-07 18:20:54,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 565 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:20:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2018-11-07 18:20:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 10212. [2018-11-07 18:20:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10212 states. [2018-11-07 18:20:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 12615 transitions. [2018-11-07 18:20:54,814 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 12615 transitions. Word has length 281 [2018-11-07 18:20:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:20:54,815 INFO L480 AbstractCegarLoop]: Abstraction has 10212 states and 12615 transitions. [2018-11-07 18:20:54,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:20:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 12615 transitions. [2018-11-07 18:20:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-07 18:20:54,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:54,822 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:20:54,822 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:54,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:54,823 INFO L82 PathProgramCache]: Analyzing trace with hash -778377091, now seen corresponding path program 1 times [2018-11-07 18:20:54,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:54,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:54,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:54,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:54,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:55,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:20:55,335 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:20:55,335 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-11-07 18:20:55,336 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:20:55,338 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:20:55,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:20:55,419 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:20:56,094 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:20:56,095 INFO L272 AbstractInterpreter]: Visited 98 different actions 576 times. Merged at 8 different actions 44 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:20:56,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:56,108 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:20:56,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:20:56,108 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 18:20:56,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:56,117 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:20:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:56,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:20:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:56,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:20:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:20:56,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:20:56,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 18:20:56,603 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:20:56,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:20:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:20:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:20:56,604 INFO L87 Difference]: Start difference. First operand 10212 states and 12615 transitions. Second operand 7 states. [2018-11-07 18:21:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:08,221 INFO L93 Difference]: Finished difference Result 35944 states and 48084 transitions. [2018-11-07 18:21:08,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 18:21:08,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2018-11-07 18:21:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:08,334 INFO L225 Difference]: With dead ends: 35944 [2018-11-07 18:21:08,334 INFO L226 Difference]: Without dead ends: 26172 [2018-11-07 18:21:08,376 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:21:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26172 states. [2018-11-07 18:21:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26172 to 25120. [2018-11-07 18:21:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25120 states. [2018-11-07 18:21:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25120 states to 25120 states and 30872 transitions. [2018-11-07 18:21:08,956 INFO L78 Accepts]: Start accepts. Automaton has 25120 states and 30872 transitions. Word has length 286 [2018-11-07 18:21:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:08,958 INFO L480 AbstractCegarLoop]: Abstraction has 25120 states and 30872 transitions. [2018-11-07 18:21:08,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:21:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 25120 states and 30872 transitions. [2018-11-07 18:21:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-07 18:21:08,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:08,966 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 18:21:08,967 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:08,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1604564883, now seen corresponding path program 1 times [2018-11-07 18:21:08,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:08,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:08,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:08,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:08,969 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:21:09,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:09,687 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:09,687 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-11-07 18:21:09,687 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1211], [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 18:21:09,690 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:09,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:09,755 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:10,157 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:10,158 INFO L272 AbstractInterpreter]: Visited 120 different actions 346 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 18:21:10,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:10,195 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:10,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:10,195 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 18:21:10,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:10,208 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:10,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:10,792 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 18:21:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 18:21:10,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:11,142 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-11-07 18:21:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 18:21:11,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:21:11,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 18:21:11,520 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:21:11,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:21:11,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:21:11,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:21:11,521 INFO L87 Difference]: Start difference. First operand 25120 states and 30872 transitions. Second operand 9 states. [2018-11-07 18:21:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:25,534 INFO L93 Difference]: Finished difference Result 64058 states and 81280 transitions. [2018-11-07 18:21:25,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:21:25,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 291 [2018-11-07 18:21:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:25,620 INFO L225 Difference]: With dead ends: 64058 [2018-11-07 18:21:25,620 INFO L226 Difference]: Without dead ends: 29375 [2018-11-07 18:21:25,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 598 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 18:21:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29375 states. [2018-11-07 18:21:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29375 to 27590. [2018-11-07 18:21:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27590 states. [2018-11-07 18:21:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27590 states to 27590 states and 33858 transitions. [2018-11-07 18:21:26,328 INFO L78 Accepts]: Start accepts. Automaton has 27590 states and 33858 transitions. Word has length 291 [2018-11-07 18:21:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:26,328 INFO L480 AbstractCegarLoop]: Abstraction has 27590 states and 33858 transitions. [2018-11-07 18:21:26,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:21:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 27590 states and 33858 transitions. [2018-11-07 18:21:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-07 18:21:26,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:26,338 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:21:26,338 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:26,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:26,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1930255619, now seen corresponding path program 1 times [2018-11-07 18:21:26,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:26,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:26,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:26,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:26,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:27,428 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 18:21:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 93 proven. 225 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:21:27,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:27,868 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:27,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 310 with the following transitions: [2018-11-07 18:21:27,868 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1231], [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], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:27,870 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:27,871 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:27,946 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:28,336 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:28,336 INFO L272 AbstractInterpreter]: Visited 120 different actions 470 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:21:28,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:28,342 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:28,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:28,342 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:28,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:28,351 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:28,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 18:21:29,059 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:29,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 18:21:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 87 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:21:30,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:21:30,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-11-07 18:21:30,664 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:21:30,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 18:21:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 18:21:30,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:21:30,666 INFO L87 Difference]: Start difference. First operand 27590 states and 33858 transitions. Second operand 15 states. [2018-11-07 18:21:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:54,029 INFO L93 Difference]: Finished difference Result 77217 states and 105526 transitions. [2018-11-07 18:21:54,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-07 18:21:54,030 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 309 [2018-11-07 18:21:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:54,269 INFO L225 Difference]: With dead ends: 77217 [2018-11-07 18:21:54,269 INFO L226 Difference]: Without dead ends: 50067 [2018-11-07 18:21:54,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 659 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1273, Invalid=5047, Unknown=0, NotChecked=0, Total=6320 [2018-11-07 18:21:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50067 states. [2018-11-07 18:21:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50067 to 45275. [2018-11-07 18:21:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45275 states. [2018-11-07 18:21:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45275 states to 45275 states and 56158 transitions. [2018-11-07 18:21:55,722 INFO L78 Accepts]: Start accepts. Automaton has 45275 states and 56158 transitions. Word has length 309 [2018-11-07 18:21:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:55,722 INFO L480 AbstractCegarLoop]: Abstraction has 45275 states and 56158 transitions. [2018-11-07 18:21:55,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 18:21:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 45275 states and 56158 transitions. [2018-11-07 18:21:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 18:21:55,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:55,728 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 18:21:55,729 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:55,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:55,729 INFO L82 PathProgramCache]: Analyzing trace with hash 218536996, now seen corresponding path program 1 times [2018-11-07 18:21:55,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:55,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:55,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:55,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:55,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 83 proven. 124 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-07 18:21:56,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:56,439 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:56,439 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 18:21:56,440 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [882], [884], [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], [1360], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:56,443 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:56,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:56,494 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:57,389 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:57,390 INFO L272 AbstractInterpreter]: Visited 114 different actions 676 times. Merged at 8 different actions 48 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:21:57,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:57,402 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:57,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:57,402 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:57,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:57,411 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:57,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 195 proven. 120 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 18:22:01,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 18:22:02,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:22:02,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 5] total 19 [2018-11-07 18:22:02,404 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:22:02,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:22:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:22:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=281, Unknown=2, NotChecked=0, Total=342 [2018-11-07 18:22:02,405 INFO L87 Difference]: Start difference. First operand 45275 states and 56158 transitions. Second operand 17 states. [2018-11-07 18:22:12,447 WARN L179 SmtUtils]: Spent 7.65 s on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-11-07 18:22:20,439 WARN L179 SmtUtils]: Spent 7.93 s on a formula simplification. DAG size of input: 49 DAG size of output: 25 Received shutdown request... [2018-11-07 18:22:28,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 18:22:28,564 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:22:28,571 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:22:28,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:22:28 BoogieIcfgContainer [2018-11-07 18:22:28,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:22:28,572 INFO L168 Benchmark]: Toolchain (without parser) took 224443.69 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 55.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:22:28,573 INFO L168 Benchmark]: CDTParser took 0.23 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 18:22:28,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1554.02 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 18:22:28,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 288.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:22:28,576 INFO L168 Benchmark]: Boogie Preprocessor took 211.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:22:28,576 INFO L168 Benchmark]: RCFGBuilder took 8816.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:22:28,577 INFO L168 Benchmark]: TraceAbstraction took 213566.54 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 392.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:22:28,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1554.02 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 288.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8816.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213566.54 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 392.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 89). Cancelled while BasicCegarLoop was constructing difference of abstraction (45275states) and FLOYD_HOARE automaton (currently 19 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1337 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 173.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3998 SDtfs, 30829 SDslu, 4382 SDs, 0 SdLazy, 52820 SolverSat, 8736 SolverUnsat, 550 SolverUnknown, 0 SolverNotchecked, 108.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 4100 GetRequests, 3863 SyntacticMatches, 24 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2681 ImplicationChecksByTransitivity, 43.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45275occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9976062444464872 AbsIntWeakeningRatio, 0.12558139534883722 AbsIntAvgWeakeningVarsNumRemoved, 19.2 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 9556 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 27.2s InterpolantComputationTime, 4066 NumberOfCodeBlocks, 4066 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5839 ConstructedInterpolants, 253 QuantifiedInterpolants, 8547391 SizeOfPredicates, 18 NumberOfNonLiveVariables, 3296 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 4524/5484 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown