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_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:24:40,080 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:24:40,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:24:40,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:24:40,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:24:40,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:24:40,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:24:40,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:24:40,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:24:40,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:24:40,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:24:40,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:24:40,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:24:40,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:24:40,125 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:24:40,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:24:40,126 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:24:40,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:24:40,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:24:40,132 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:24:40,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:24:40,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:24:40,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 20:24:40,148 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:24:40,148 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:24:40,149 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:24:40,150 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:24:40,150 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 20:24:40,173 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:24:40,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:24:40,174 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:24:40,174 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:24:40,174 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:24:40,174 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:24:40,175 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:24:40,175 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:24:40,175 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:24:40,175 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:24:40,175 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:24:40,176 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:24:40,176 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:24:40,176 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:24:40,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:24:40,177 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:24:40,177 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:24:40,177 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:24:40,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:24:40,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:24:40,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:24:40,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:24:40,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:24:40,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:24:40,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:24:40,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:24:40,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:24:40,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:24:40,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:24:40,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:24:40,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:24:40,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:24:40,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:24:40,244 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:24:40,245 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:24:40,245 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 20:24:40,306 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972467b93/381cedcda5f74801a6793aebf6b97c39/FLAG26bce1e32 [2018-11-07 20:24:41,063 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:24:41,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 20:24:41,096 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972467b93/381cedcda5f74801a6793aebf6b97c39/FLAG26bce1e32 [2018-11-07 20:24:41,113 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972467b93/381cedcda5f74801a6793aebf6b97c39 [2018-11-07 20:24:41,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:24:41,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:24:41,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:24:41,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:24:41,132 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:24:41,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:24:41" (1/1) ... [2018-11-07 20:24:41,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c053053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:41, skipping insertion in model container [2018-11-07 20:24:41,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:24:41" (1/1) ... [2018-11-07 20:24:41,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:24:41,316 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:24:42,838 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:24:42,844 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:24:43,777 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:24:43,814 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:24:43,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43 WrapperNode [2018-11-07 20:24:43,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:24:43,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:24:43,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:24:43,816 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:24:43,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:24:44,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:24:44,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:24:44,198 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:24:44,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (1/1) ... [2018-11-07 20:24:44,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:24:44,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:24:44,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:24:44,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:24:44,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (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 20:24:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:24:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:24:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:24:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:24:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:24:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:24:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:24:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:24:44,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:24:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:24:44,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:24:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:24:44,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:24:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:24:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:24:53,988 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:24:53,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:24:53 BoogieIcfgContainer [2018-11-07 20:24:53,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:24:53,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:24:53,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:24:53,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:24:53,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:24:41" (1/3) ... [2018-11-07 20:24:53,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b59dbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:24:53, skipping insertion in model container [2018-11-07 20:24:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:43" (2/3) ... [2018-11-07 20:24:53,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b59dbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:24:53, skipping insertion in model container [2018-11-07 20:24:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:24:53" (3/3) ... [2018-11-07 20:24:53,997 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-11-07 20:24:54,006 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:24:54,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:24:54,030 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:24:54,078 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:24:54,079 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:24:54,079 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:24:54,079 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:24:54,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:24:54,079 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:24:54,079 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:24:54,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:24:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 20:24:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 20:24:54,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:54,133 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:24:54,136 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:54,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1009220837, now seen corresponding path program 1 times [2018-11-07 20:24:54,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:54,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:54,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:54,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:54,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:54,686 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 20:24:54,703 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 20:24:54,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:24:54,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:24:54,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:54,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:24:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:24:54,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:24:54,736 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 20:25:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:25:07,907 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-11-07 20:25:07,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:25:07,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-07 20:25:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:25:07,964 INFO L225 Difference]: With dead ends: 4065 [2018-11-07 20:25:07,965 INFO L226 Difference]: Without dead ends: 2939 [2018-11-07 20:25:07,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:25:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-11-07 20:25:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-11-07 20:25:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-11-07 20:25:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-11-07 20:25:08,180 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 41 [2018-11-07 20:25:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:25:08,181 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-11-07 20:25:08,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:25:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-11-07 20:25:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 20:25:08,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:25:08,192 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:08,192 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:25:08,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:25:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1838928187, now seen corresponding path program 1 times [2018-11-07 20:25:08,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:25:08,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:08,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:25:08,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:08,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:25:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:25:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:25:08,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:25:08,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:25:08,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:25:08,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:25:08,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:25:08,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:25:08,612 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-11-07 20:25:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:25:22,873 INFO L93 Difference]: Finished difference Result 7229 states and 13602 transitions. [2018-11-07 20:25:22,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:25:22,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 20:25:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:25:22,917 INFO L225 Difference]: With dead ends: 7229 [2018-11-07 20:25:22,918 INFO L226 Difference]: Without dead ends: 5263 [2018-11-07 20:25:22,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:25:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2018-11-07 20:25:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5234. [2018-11-07 20:25:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-11-07 20:25:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8445 transitions. [2018-11-07 20:25:23,085 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8445 transitions. Word has length 114 [2018-11-07 20:25:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:25:23,087 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8445 transitions. [2018-11-07 20:25:23,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:25:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8445 transitions. [2018-11-07 20:25:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 20:25:23,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:25:23,103 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:23,103 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:25:23,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:25:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1607294046, now seen corresponding path program 1 times [2018-11-07 20:25:23,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:25:23,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:23,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:25:23,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:23,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:25:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:25:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:25:23,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:25:23,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:25:23,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:25:23,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:25:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:25:23,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:25:23,508 INFO L87 Difference]: Start difference. First operand 5234 states and 8445 transitions. Second operand 5 states. [2018-11-07 20:25:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:25:33,482 INFO L93 Difference]: Finished difference Result 15736 states and 26179 transitions. [2018-11-07 20:25:33,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:25:33,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 20:25:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:25:33,556 INFO L225 Difference]: With dead ends: 15736 [2018-11-07 20:25:33,556 INFO L226 Difference]: Without dead ends: 10508 [2018-11-07 20:25:33,584 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 20:25:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10508 states. [2018-11-07 20:25:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10508 to 10305. [2018-11-07 20:25:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10305 states. [2018-11-07 20:25:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 15524 transitions. [2018-11-07 20:25:34,021 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 15524 transitions. Word has length 143 [2018-11-07 20:25:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:25:34,022 INFO L480 AbstractCegarLoop]: Abstraction has 10305 states and 15524 transitions. [2018-11-07 20:25:34,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:25:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 15524 transitions. [2018-11-07 20:25:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 20:25:34,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:25:34,026 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:34,027 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:25:34,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:25:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash -19334682, now seen corresponding path program 1 times [2018-11-07 20:25:34,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:25:34,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:34,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:25:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:34,029 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:25:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:25:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:25:34,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:25:34,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:25:34,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:25:34,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:25:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:25:34,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:25:34,218 INFO L87 Difference]: Start difference. First operand 10305 states and 15524 transitions. Second operand 5 states. [2018-11-07 20:25:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:25:52,918 INFO L93 Difference]: Finished difference Result 32113 states and 50327 transitions. [2018-11-07 20:25:52,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:25:52,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 20:25:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:25:53,013 INFO L225 Difference]: With dead ends: 32113 [2018-11-07 20:25:53,014 INFO L226 Difference]: Without dead ends: 21814 [2018-11-07 20:25:53,069 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:25:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2018-11-07 20:25:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21591. [2018-11-07 20:25:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21591 states. [2018-11-07 20:25:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21591 states to 21591 states and 31882 transitions. [2018-11-07 20:25:53,601 INFO L78 Accepts]: Start accepts. Automaton has 21591 states and 31882 transitions. Word has length 147 [2018-11-07 20:25:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:25:53,602 INFO L480 AbstractCegarLoop]: Abstraction has 21591 states and 31882 transitions. [2018-11-07 20:25:53,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:25:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 21591 states and 31882 transitions. [2018-11-07 20:25:53,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 20:25:53,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:25:53,610 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:53,611 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:25:53,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:25:53,611 INFO L82 PathProgramCache]: Analyzing trace with hash -389216454, now seen corresponding path program 1 times [2018-11-07 20:25:53,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:25:53,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:53,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:25:53,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:53,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:25:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:25:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:25:53,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:25:53,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:25:53,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:25:53,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:25:53,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:25:53,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:25:53,867 INFO L87 Difference]: Start difference. First operand 21591 states and 31882 transitions. Second operand 4 states. [2018-11-07 20:26:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:03,332 INFO L93 Difference]: Finished difference Result 83801 states and 134399 transitions. [2018-11-07 20:26:03,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:26:03,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-11-07 20:26:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:03,623 INFO L225 Difference]: With dead ends: 83801 [2018-11-07 20:26:03,623 INFO L226 Difference]: Without dead ends: 62216 [2018-11-07 20:26:03,732 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 20:26:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62216 states. [2018-11-07 20:26:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62216 to 62166. [2018-11-07 20:26:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62166 states. [2018-11-07 20:26:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62166 states to 62166 states and 90706 transitions. [2018-11-07 20:26:05,222 INFO L78 Accepts]: Start accepts. Automaton has 62166 states and 90706 transitions. Word has length 157 [2018-11-07 20:26:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:05,222 INFO L480 AbstractCegarLoop]: Abstraction has 62166 states and 90706 transitions. [2018-11-07 20:26:05,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:26:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 62166 states and 90706 transitions. [2018-11-07 20:26:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-07 20:26:05,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:05,266 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:26:05,266 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:05,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:05,267 INFO L82 PathProgramCache]: Analyzing trace with hash -314239728, now seen corresponding path program 1 times [2018-11-07 20:26:05,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:05,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:05,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:05,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:05,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:05,595 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:26:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 68 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:26:06,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:26:06,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:26:06,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-11-07 20:26:06,597 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2855], [2857], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3336], [3341], [3343], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3524], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:26:06,672 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:26:06,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:26:07,751 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:26:07,752 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:26:07,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:07,792 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:26:08,880 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 71.24% of their original sizes. [2018-11-07 20:26:08,881 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:26:09,790 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-11-07 20:26:09,791 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:26:09,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:26:09,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:26:09,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:09,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:26:09,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:26:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:26:09,794 INFO L87 Difference]: Start difference. First operand 62166 states and 90706 transitions. Second operand 11 states. [2018-11-07 20:26:21,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:26:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:58,887 INFO L93 Difference]: Finished difference Result 125135 states and 182331 transitions. [2018-11-07 20:26:58,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:26:58,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 310 [2018-11-07 20:26:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:59,155 INFO L225 Difference]: With dead ends: 125135 [2018-11-07 20:26:59,155 INFO L226 Difference]: Without dead ends: 62975 [2018-11-07 20:26:59,287 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 314 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:26:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62975 states. [2018-11-07 20:27:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62975 to 62970. [2018-11-07 20:27:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62970 states. [2018-11-07 20:27:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62970 states to 62970 states and 91521 transitions. [2018-11-07 20:27:00,459 INFO L78 Accepts]: Start accepts. Automaton has 62970 states and 91521 transitions. Word has length 310 [2018-11-07 20:27:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:27:00,460 INFO L480 AbstractCegarLoop]: Abstraction has 62970 states and 91521 transitions. [2018-11-07 20:27:00,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:27:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 62970 states and 91521 transitions. [2018-11-07 20:27:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 20:27:00,495 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:00,495 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:27:00,495 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:00,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:00,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1929478170, now seen corresponding path program 1 times [2018-11-07 20:27:00,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:00,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:00,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:00,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:00,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:00,831 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:27:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 108 proven. 203 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:27:01,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:27:01,352 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:27:01,352 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 20:27:01,353 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2855], [2857], [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], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3277], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:27:01,362 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:27:01,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:27:11,620 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:27:11,620 INFO L272 AbstractInterpreter]: Visited 113 different actions 326 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 20:27:11,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:11,660 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:27:12,542 INFO L227 lantSequenceWeakener]: Weakened 81 states. On average, predicates are now at 72.46% of their original sizes. [2018-11-07 20:27:12,542 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:27:15,810 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-07 20:27:15,810 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:27:15,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:27:15,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:27:15,811 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:15,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:27:15,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:27:15,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:27:15,812 INFO L87 Difference]: Start difference. First operand 62970 states and 91521 transitions. Second operand 19 states. [2018-11-07 20:27:28,216 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:28:05,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 20:28:05,832 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:28:05,838 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:28:05,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:28:05 BoogieIcfgContainer [2018-11-07 20:28:05,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:28:05,839 INFO L168 Benchmark]: Toolchain (without parser) took 204713.43 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:28:05,841 INFO L168 Benchmark]: CDTParser took 0.26 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 20:28:05,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2687.52 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:28:05,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 381.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.9 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 20:28:05,843 INFO L168 Benchmark]: Boogie Preprocessor took 323.10 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 20:28:05,844 INFO L168 Benchmark]: RCFGBuilder took 9467.64 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 158.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 665.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:28:05,845 INFO L168 Benchmark]: TraceAbstraction took 191848.50 ms. Allocated memory was 2.5 GB in the beginning and 5.6 GB in the end (delta: 3.1 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -461.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:28:05,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2687.52 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 381.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.9 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 323.10 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 9467.64 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 158.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 665.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191848.50 ms. Allocated memory was 2.5 GB in the beginning and 5.6 GB in the end (delta: 3.1 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -461.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (62970states) and FLOYD_HOARE automaton (currently 16 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (32627 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 191.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 165.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3646 SDtfs, 22056 SDslu, 3345 SDs, 0 SdLazy, 40351 SolverSat, 8283 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 87.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 696 GetRequests, 529 SyntacticMatches, 105 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62970occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.997840540839123 AbsIntWeakeningRatio, 0.09472049689440994 AbsIntAvgWeakeningVarsNumRemoved, 6.240683229813665 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 1477 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1248 NumberOfCodeBlocks, 1248 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1241 ConstructedInterpolants, 0 QuantifiedInterpolants, 740893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 389/704 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown