java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:54:17,095 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:54:17,098 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:54:17,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:54:17,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:54:17,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:54:17,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:54:17,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:54:17,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:54:17,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:54:17,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:54:17,127 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:54:17,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:54:17,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:54:17,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:54:17,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:54:17,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:54:17,139 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:54:17,149 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:54:17,151 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:54:17,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:54:17,154 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:54:17,156 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:54:17,156 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:54:17,156 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:54:17,157 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:54:17,158 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:54:17,159 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:54:17,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:54:17,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:54:17,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:54:17,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:54:17,166 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:54:17,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:54:17,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:54:17,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:54:17,169 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 17:54:17,196 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:54:17,197 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:54:17,197 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:54:17,198 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:54:17,198 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:54:17,198 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:54:17,198 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:54:17,198 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:54:17,199 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:54:17,199 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:54:17,199 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:54:17,200 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:54:17,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:54:17,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:54:17,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:54:17,202 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:54:17,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:54:17,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:54:17,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:54:17,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:54:17,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:54:17,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:54:17,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:54:17,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:54:17,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:54:17,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:54:17,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:54:17,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:54:17,206 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:54:17,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:54:17,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:54:17,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:54:17,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:54:17,279 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:54:17,279 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:54:17,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21_false-unreach-call.c [2018-11-07 17:54:17,348 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198f85540/4fe25117cfa6451b8ca3277c59a626b9/FLAG6177876fa [2018-11-07 17:54:18,168 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:54:18,169 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label21_false-unreach-call.c [2018-11-07 17:54:18,214 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198f85540/4fe25117cfa6451b8ca3277c59a626b9/FLAG6177876fa [2018-11-07 17:54:18,230 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198f85540/4fe25117cfa6451b8ca3277c59a626b9 [2018-11-07 17:54:18,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:54:18,244 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:54:18,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:54:18,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:54:18,252 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:54:18,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:54:18" (1/1) ... [2018-11-07 17:54:18,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47995a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:18, skipping insertion in model container [2018-11-07 17:54:18,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:54:18" (1/1) ... [2018-11-07 17:54:18,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:54:18,462 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:54:19,962 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:54:19,967 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:54:20,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:54:20,723 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:54:20,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20 WrapperNode [2018-11-07 17:54:20,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:54:20,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:54:20,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:54:20,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:54:20,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:54:21,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:54:21,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:54:21,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:54:21,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (1/1) ... [2018-11-07 17:54:21,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:54:21,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:54:21,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:54:21,460 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:54:21,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (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 17:54:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:54:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:54:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:54:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:54:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:54:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:54:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:54:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:54:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:54:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:54:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:54:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:54:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:54:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:54:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:54:32,175 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:54:32,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:54:32 BoogieIcfgContainer [2018-11-07 17:54:32,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:54:32,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:54:32,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:54:32,181 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:54:32,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:54:18" (1/3) ... [2018-11-07 17:54:32,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac16cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:54:32, skipping insertion in model container [2018-11-07 17:54:32,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:54:20" (2/3) ... [2018-11-07 17:54:32,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac16cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:54:32, skipping insertion in model container [2018-11-07 17:54:32,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:54:32" (3/3) ... [2018-11-07 17:54:32,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label21_false-unreach-call.c [2018-11-07 17:54:32,196 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:54:32,206 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:54:32,222 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:54:32,277 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:54:32,278 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:54:32,278 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:54:32,278 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:54:32,278 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:54:32,278 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:54:32,278 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:54:32,278 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:54:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 17:54:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 17:54:32,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:32,345 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] [2018-11-07 17:54:32,348 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:32,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash -657257213, now seen corresponding path program 1 times [2018-11-07 17:54:32,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:32,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:32,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:32,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:32,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:32,809 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 17:54:32,825 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 17:54:32,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:54:32,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:54:32,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:32,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:54:32,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:54:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:54:32,851 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 17:54:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:54:45,046 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-07 17:54:45,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:54:45,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-07 17:54:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:54:45,112 INFO L225 Difference]: With dead ends: 4063 [2018-11-07 17:54:45,112 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 17:54:45,128 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 17:54:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 17:54:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-07 17:54:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-07 17:54:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-07 17:54:45,312 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 27 [2018-11-07 17:54:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:54:45,312 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-07 17:54:45,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:54:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-07 17:54:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 17:54:45,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:45,321 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:54:45,321 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:45,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:45,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1730272033, now seen corresponding path program 1 times [2018-11-07 17:54:45,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:45,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:45,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:45,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:45,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:54:45,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:54:45,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:54:45,775 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:45,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:54:45,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:54:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:54:45,778 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-07 17:55:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:55:01,261 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-07 17:55:01,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:55:01,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-11-07 17:55:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:55:01,299 INFO L225 Difference]: With dead ends: 7277 [2018-11-07 17:55:01,299 INFO L226 Difference]: Without dead ends: 5301 [2018-11-07 17:55:01,311 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:55:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-07 17:55:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-07 17:55:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-07 17:55:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-07 17:55:01,451 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 98 [2018-11-07 17:55:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:55:01,451 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-07 17:55:01,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:55:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-07 17:55:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 17:55:01,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:55:01,459 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:55:01,460 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:55:01,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:55:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1080221806, now seen corresponding path program 1 times [2018-11-07 17:55:01,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:55:01,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:01,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:55:01,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:01,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:55:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:55:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:55:01,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:55:01,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:55:01,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:55:01,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:55:01,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:55:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:55:01,774 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-07 17:55:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:55:12,927 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-07 17:55:12,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:55:12,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 17:55:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:55:12,976 INFO L225 Difference]: With dead ends: 13914 [2018-11-07 17:55:12,976 INFO L226 Difference]: Without dead ends: 8668 [2018-11-07 17:55:12,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:55:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-07 17:55:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-07 17:55:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-07 17:55:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-07 17:55:13,229 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 101 [2018-11-07 17:55:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:55:13,229 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-07 17:55:13,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:55:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-07 17:55:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 17:55:13,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:55:13,236 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:55:13,240 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:55:13,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:55:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 946861634, now seen corresponding path program 1 times [2018-11-07 17:55:13,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:55:13,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:13,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:55:13,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:13,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:55:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:55:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:55:13,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:55:13,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:55:13,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:55:13,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:55:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:55:13,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:55:13,615 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-11-07 17:55:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:55:22,946 INFO L93 Difference]: Finished difference Result 25969 states and 40304 transitions. [2018-11-07 17:55:22,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 17:55:22,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-11-07 17:55:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:55:23,029 INFO L225 Difference]: With dead ends: 25969 [2018-11-07 17:55:23,029 INFO L226 Difference]: Without dead ends: 17370 [2018-11-07 17:55:23,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 17:55:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17370 states. [2018-11-07 17:55:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17370 to 17107. [2018-11-07 17:55:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17107 states. [2018-11-07 17:55:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17107 states to 17107 states and 24300 transitions. [2018-11-07 17:55:23,450 INFO L78 Accepts]: Start accepts. Automaton has 17107 states and 24300 transitions. Word has length 111 [2018-11-07 17:55:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:55:23,451 INFO L480 AbstractCegarLoop]: Abstraction has 17107 states and 24300 transitions. [2018-11-07 17:55:23,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:55:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 17107 states and 24300 transitions. [2018-11-07 17:55:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 17:55:23,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:55:23,454 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:55:23,454 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:55:23,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:55:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash 979871088, now seen corresponding path program 1 times [2018-11-07 17:55:23,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:55:23,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:23,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:55:23,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:55:23,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:55:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:55:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:55:23,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:55:23,686 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:55:23,687 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-11-07 17:55:23,690 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2743], [2745], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 17:55:23,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:55:23,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:55:25,343 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:55:25,345 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 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 17:55:25,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:55:25,392 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:55:25,982 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 71.81% of their original sizes. [2018-11-07 17:55:25,982 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:55:28,419 INFO L415 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2018-11-07 17:55:28,419 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:55:28,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:55:28,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 17:55:28,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:55:28,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 17:55:28,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 17:55:28,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 17:55:28,422 INFO L87 Difference]: Start difference. First operand 17107 states and 24300 transitions. Second operand 17 states. [2018-11-07 17:55:46,854 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:57:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:57:01,277 INFO L93 Difference]: Finished difference Result 36118 states and 51231 transitions. [2018-11-07 17:57:01,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 17:57:01,277 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 128 [2018-11-07 17:57:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:57:01,335 INFO L225 Difference]: With dead ends: 36118 [2018-11-07 17:57:01,335 INFO L226 Difference]: Without dead ends: 19017 [2018-11-07 17:57:01,374 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 17:57:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19017 states. [2018-11-07 17:57:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19017 to 19012. [2018-11-07 17:57:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19012 states. [2018-11-07 17:57:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19012 states to 19012 states and 26263 transitions. [2018-11-07 17:57:01,768 INFO L78 Accepts]: Start accepts. Automaton has 19012 states and 26263 transitions. Word has length 128 [2018-11-07 17:57:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:57:01,769 INFO L480 AbstractCegarLoop]: Abstraction has 19012 states and 26263 transitions. [2018-11-07 17:57:01,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 17:57:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19012 states and 26263 transitions. [2018-11-07 17:57:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-07 17:57:01,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:57:01,775 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:57:01,776 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:57:01,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:57:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1384453170, now seen corresponding path program 1 times [2018-11-07 17:57:01,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:57:01,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:57:01,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:57:01,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:57:01,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:57:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:57:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:57:02,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:57:02,450 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:57:02,451 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-11-07 17:57:02,451 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2743], [2745], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 17:57:02,464 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:57:02,464 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:57:03,648 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:57:03,649 INFO L272 AbstractInterpreter]: Visited 139 different actions 684 times. Merged at 7 different actions 35 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 17:57:03,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:57:03,692 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:57:03,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:57:03,692 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 17:57:03,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:57:03,720 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:57:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:57:03,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:57:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-07 17:57:04,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:57:05,835 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 17:57:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 45 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:57:06,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:57:06,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 19 [2018-11-07 17:57:06,512 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:57:06,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 17:57:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 17:57:06,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-11-07 17:57:06,514 INFO L87 Difference]: Start difference. First operand 19012 states and 26263 transitions. Second operand 12 states. [2018-11-07 17:57:10,392 WARN L179 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 13 Received shutdown request... [2018-11-07 17:57:39,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-11-07 17:57:39,689 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:57:39,693 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:57:39,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:57:39 BoogieIcfgContainer [2018-11-07 17:57:39,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:57:39,695 INFO L168 Benchmark]: Toolchain (without parser) took 201452.07 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,696 INFO L168 Benchmark]: CDTParser took 0.25 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 17:57:39,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2479.46 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 372.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,699 INFO L168 Benchmark]: Boogie Preprocessor took 361.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,700 INFO L168 Benchmark]: RCFGBuilder took 10717.27 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 166.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.0 MB). Peak memory consumption was 665.7 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,701 INFO L168 Benchmark]: TraceAbstraction took 187516.45 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -300.9 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 17:57:39,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2479.46 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 372.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 361.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10717.27 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 166.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.0 MB). Peak memory consumption was 665.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 187516.45 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -300.9 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (19012states) and FLOYD_HOARE automaton (currently 64 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (36549 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 187.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 174.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3445 SDtfs, 30958 SDslu, 3918 SDs, 0 SdLazy, 60547 SolverSat, 11634 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 786 GetRequests, 654 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19012occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9966870519643541 AbsIntWeakeningRatio, 0.16535433070866143 AbsIntAvgWeakeningVarsNumRemoved, 11.905511811023622 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 1335 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1231 ConstructedInterpolants, 0 QuantifiedInterpolants, 1973275 SizeOfPredicates, 10 NumberOfNonLiveVariables, 474 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 334/503 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown