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/Problem12_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:47:35,089 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:47:35,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:47:35,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:47:35,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:47:35,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:47:35,106 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:47:35,108 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:47:35,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:47:35,110 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:47:35,111 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:47:35,111 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:47:35,112 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:47:35,113 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:47:35,115 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:47:35,115 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:47:35,116 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:47:35,118 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:47:35,120 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:47:35,122 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:47:35,125 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:47:35,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:47:35,131 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:47:35,131 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:47:35,131 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:47:35,132 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:47:35,138 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:47:35,139 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:47:35,140 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:47:35,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:47:35,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:47:35,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:47:35,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:47:35,142 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:47:35,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:47:35,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:47:35,144 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 17:47:35,160 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:47:35,160 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:47:35,161 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:47:35,161 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:47:35,161 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:47:35,161 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:47:35,162 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:47:35,162 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:47:35,162 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:47:35,162 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:47:35,162 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:47:35,163 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:47:35,163 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:47:35,164 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:47:35,164 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:47:35,164 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:47:35,164 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:47:35,164 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:47:35,165 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:47:35,165 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:47:35,165 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:47:35,165 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:47:35,165 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:47:35,166 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:47:35,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:47:35,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:47:35,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:47:35,166 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:47:35,167 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:47:35,167 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:47:35,167 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:47:35,167 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:47:35,167 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:47:35,168 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:47:35,168 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:47:35,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:47:35,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:47:35,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:47:35,234 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:47:35,234 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:47:35,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-11-07 17:47:35,296 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9e1be4a/53612416389c47c09c8d58f141ed1bf9/FLAGc7d978ce4 [2018-11-07 17:47:36,133 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:47:36,134 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-11-07 17:47:36,171 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9e1be4a/53612416389c47c09c8d58f141ed1bf9/FLAGc7d978ce4 [2018-11-07 17:47:36,195 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9e1be4a/53612416389c47c09c8d58f141ed1bf9 [2018-11-07 17:47:36,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:47:36,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:47:36,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:36,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:47:36,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:47:36,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:36" (1/1) ... [2018-11-07 17:47:36,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:36, skipping insertion in model container [2018-11-07 17:47:36,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:36" (1/1) ... [2018-11-07 17:47:36,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:47:36,415 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:47:37,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:37,748 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:47:38,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:38,384 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:47:38,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38 WrapperNode [2018-11-07 17:47:38,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:38,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:38,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:47:38,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:47:38,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:38,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:47:38,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:47:38,783 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:47:38,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:38,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... [2018-11-07 17:47:39,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:47:39,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:47:39,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:47:39,028 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:47:39,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:47:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:47:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:47:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:47:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:47:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:47:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:47:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:47:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:47:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:47:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:47:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:47:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:47:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:47:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:47:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:47:48,683 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:47:48,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:48 BoogieIcfgContainer [2018-11-07 17:47:48,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:47:48,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:47:48,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:47:48,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:47:48,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:47:36" (1/3) ... [2018-11-07 17:47:48,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360808a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:48, skipping insertion in model container [2018-11-07 17:47:48,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:38" (2/3) ... [2018-11-07 17:47:48,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360808a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:48, skipping insertion in model container [2018-11-07 17:47:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:48" (3/3) ... [2018-11-07 17:47:48,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20_false-unreach-call.c [2018-11-07 17:47:48,703 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:47:48,713 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:47:48,731 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:47:48,783 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:47:48,784 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:47:48,784 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:47:48,784 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:47:48,784 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:47:48,784 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:47:48,784 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:47:48,785 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:47:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 17:47:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 17:47:48,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:48,839 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:47:48,841 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:48,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash -203792917, now seen corresponding path program 1 times [2018-11-07 17:47:48,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:48,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:48,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:48,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:48,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:49,224 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:47:49,339 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 17:47:49,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:49,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:47:49,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:49,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:47:49,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:47:49,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:49,400 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 17:47:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:58,034 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 17:47:58,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:47:58,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-07 17:47:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:58,068 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 17:47:58,068 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 17:47:58,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 17:47:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 17:47:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 17:47:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-11-07 17:47:58,232 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 19 [2018-11-07 17:47:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:58,233 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-11-07 17:47:58,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:47:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-11-07 17:47:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-07 17:47:58,238 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:58,238 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:47:58,239 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:58,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:58,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1934029764, now seen corresponding path program 1 times [2018-11-07 17:47:58,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:58,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:58,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:58,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:58,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:47:58,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:58,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:47:58,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:58,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:47:58,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:47:58,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:47:58,592 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-11-07 17:48:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:09,499 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-11-07 17:48:09,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:48:09,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-07 17:48:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:09,518 INFO L225 Difference]: With dead ends: 4038 [2018-11-07 17:48:09,518 INFO L226 Difference]: Without dead ends: 2440 [2018-11-07 17:48:09,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:48:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-11-07 17:48:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-11-07 17:48:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-11-07 17:48:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-11-07 17:48:09,594 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 93 [2018-11-07 17:48:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:09,595 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-11-07 17:48:09,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:48:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-11-07 17:48:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-07 17:48:09,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:09,601 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:48:09,601 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:09,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1031074280, now seen corresponding path program 1 times [2018-11-07 17:48:09,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:09,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:09,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:09,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:09,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 17:48:09,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:09,809 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:48:09,810 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 96 with the following transitions: [2018-11-07 17:48:09,812 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1919], [1921], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:48:09,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:48:09,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:48:10,676 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:48:10,678 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:48:10,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:10,724 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:48:11,075 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 74.86% of their original sizes. [2018-11-07 17:48:11,076 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:48:11,706 INFO L415 sIntCurrentIteration]: We unified 94 AI predicates to 94 [2018-11-07 17:48:11,707 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:48:11,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:48:11,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 17:48:11,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:11,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:48:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:48:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:48:11,710 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 11 states. [2018-11-07 17:48:21,797 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:49:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:49:04,397 INFO L93 Difference]: Finished difference Result 7130 states and 12346 transitions. [2018-11-07 17:49:04,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:49:04,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2018-11-07 17:49:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:49:04,420 INFO L225 Difference]: With dead ends: 7130 [2018-11-07 17:49:04,420 INFO L226 Difference]: Without dead ends: 4723 [2018-11-07 17:49:04,428 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:49:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-11-07 17:49:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4720. [2018-11-07 17:49:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2018-11-07 17:49:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6479 transitions. [2018-11-07 17:49:04,547 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6479 transitions. Word has length 95 [2018-11-07 17:49:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:49:04,547 INFO L480 AbstractCegarLoop]: Abstraction has 4720 states and 6479 transitions. [2018-11-07 17:49:04,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:49:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6479 transitions. [2018-11-07 17:49:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 17:49:04,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:49:04,564 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:04,565 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:49:04,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash 296556369, now seen corresponding path program 1 times [2018-11-07 17:49:04,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:49:04,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:04,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:49:04,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:04,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:49:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:49:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 17:49:04,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:49:04,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:49:04,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:49:04,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:49:04,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:49:04,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:49:04,971 INFO L87 Difference]: Start difference. First operand 4720 states and 6479 transitions. Second operand 4 states. [2018-11-07 17:49:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:49:13,309 INFO L93 Difference]: Finished difference Result 11805 states and 19115 transitions. [2018-11-07 17:49:13,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:49:13,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-11-07 17:49:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:49:13,364 INFO L225 Difference]: With dead ends: 11805 [2018-11-07 17:49:13,365 INFO L226 Difference]: Without dead ends: 9398 [2018-11-07 17:49:13,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:49:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2018-11-07 17:49:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 9398. [2018-11-07 17:49:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9398 states. [2018-11-07 17:49:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 13400 transitions. [2018-11-07 17:49:13,639 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 13400 transitions. Word has length 241 [2018-11-07 17:49:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:49:13,640 INFO L480 AbstractCegarLoop]: Abstraction has 9398 states and 13400 transitions. [2018-11-07 17:49:13,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:49:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 13400 transitions. [2018-11-07 17:49:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 17:49:13,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:49:13,648 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:13,649 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:49:13,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1311170459, now seen corresponding path program 1 times [2018-11-07 17:49:13,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:49:13,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:13,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:49:13,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:13,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:49:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:49:14,861 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:49:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 17:49:14,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:49:14,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:49:14,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 17:49:14,970 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1919], [1921], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2472], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:49:14,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:49:14,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:49:15,223 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:49:15,455 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:49:15,455 INFO L272 AbstractInterpreter]: Visited 158 different actions 312 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:49:15,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:15,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:49:16,166 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-07 17:49:16,167 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:49:16,750 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-07 17:49:16,751 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:49:16,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:49:16,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 17:49:16,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:49:16,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 17:49:16,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 17:49:16,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2018-11-07 17:49:16,754 INFO L87 Difference]: Start difference. First operand 9398 states and 13400 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 17:51:12,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-07 17:51:12,257 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:51:12,262 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:51:12,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:51:12 BoogieIcfgContainer [2018-11-07 17:51:12,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:51:12,263 INFO L168 Benchmark]: Toolchain (without parser) took 216054.66 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -864.0 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,265 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:51:12,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2173.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 396.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,267 INFO L168 Benchmark]: Boogie Preprocessor took 244.90 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,268 INFO L168 Benchmark]: RCFGBuilder took 9656.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 653.5 MB). Peak memory consumption was 653.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,269 INFO L168 Benchmark]: TraceAbstraction took 203577.57 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -704.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 17:51:12,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2173.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 396.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 244.90 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9656.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 653.5 MB). Peak memory consumption was 653.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203577.57 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -704.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (9398states) and FLOYD_HOARE automaton (currently 35 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (15077 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 196.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2111 SDtfs, 14641 SDslu, 1311 SDs, 0 SdLazy, 34774 SolverSat, 5585 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 409 GetRequests, 337 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9398occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9968785735198779 AbsIntWeakeningRatio, 0.13333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 13.152777777777779 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 715 NumberOfCodeBlocks, 715 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 710 ConstructedInterpolants, 0 QuantifiedInterpolants, 347664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 223/246 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown