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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:21:41,151 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:21:41,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:21:41,171 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:21:41,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:21:41,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:21:41,174 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:21:41,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:21:41,178 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:21:41,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:21:41,179 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:21:41,180 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:21:41,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:21:41,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:21:41,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:21:41,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:21:41,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:21:41,186 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:21:41,188 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:21:41,190 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:21:41,191 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:21:41,194 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:21:41,197 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:21:41,205 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:21:41,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:21:41,221 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:21:41,222 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:21:41,222 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:21:41,222 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:21:41,222 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:21:41,222 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:21:41,223 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:21:41,223 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:21:41,223 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:21:41,223 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:21:41,223 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:21:41,224 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:21:41,224 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:21:41,225 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:21:41,225 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:21:41,225 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:21:41,225 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:21:41,225 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:21:41,226 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:21:41,226 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:21:41,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:21:41,226 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:21:41,226 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:21:41,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:21:41,227 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:21:41,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:21:41,227 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:21:41,227 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:21:41,228 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:21:41,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:21:41,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:21:41,228 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:21:41,228 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:21:41,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:21:41,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:21:41,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:21:41,290 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:21:41,290 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:21:41,291 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 00:21:41,352 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64be7b48b/d3a26e91628745ae98aee7fa9fd42aee/FLAG0ff8ccad2 [2018-11-07 00:21:41,965 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:21:41,966 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 00:21:41,984 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64be7b48b/d3a26e91628745ae98aee7fa9fd42aee/FLAG0ff8ccad2 [2018-11-07 00:21:42,002 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64be7b48b/d3a26e91628745ae98aee7fa9fd42aee [2018-11-07 00:21:42,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:21:42,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:21:42,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:42,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:21:42,022 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:21:42,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:42,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f3e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42, skipping insertion in model container [2018-11-07 00:21:42,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:42,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:21:42,108 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:21:42,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:42,654 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:21:42,824 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:42,844 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:21:42,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42 WrapperNode [2018-11-07 00:21:42,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:42,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:42,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:21:42,846 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:21:42,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:42,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:43,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:21:43,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:21:43,002 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:21:43,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (1/1) ... [2018-11-07 00:21:43,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:21:43,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:21:43,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:21:43,111 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:21:43,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (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 00:21:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:21:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:21:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:21:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:21:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:21:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:21:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:21:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:21:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:21:46,676 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:21:46,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:46 BoogieIcfgContainer [2018-11-07 00:21:46,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:21:46,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:21:46,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:21:46,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:21:46,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:21:42" (1/3) ... [2018-11-07 00:21:46,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a23ca06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:46, skipping insertion in model container [2018-11-07 00:21:46,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:42" (2/3) ... [2018-11-07 00:21:46,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a23ca06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:46, skipping insertion in model container [2018-11-07 00:21:46,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:46" (3/3) ... [2018-11-07 00:21:46,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 00:21:46,699 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:21:46,713 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:21:46,731 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:21:46,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:21:46,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:21:46,776 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:21:46,776 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:21:46,776 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:21:46,776 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:21:46,776 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:21:46,777 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:21:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:21:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 00:21:46,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:46,816 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] [2018-11-07 00:21:46,819 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:46,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:46,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-11-07 00:21:46,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:46,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:46,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:46,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:46,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:47,165 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 00:21:47,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:47,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:47,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:47,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:47,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:47,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:47,187 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 00:21:50,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:50,456 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 00:21:50,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:21:50,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 00:21:50,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:50,480 INFO L225 Difference]: With dead ends: 894 [2018-11-07 00:21:50,480 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 00:21:50,489 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 00:21:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 00:21:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 00:21:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 00:21:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 00:21:50,596 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-11-07 00:21:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:50,596 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 00:21:50,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 00:21:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 00:21:50,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:50,605 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:21:50,606 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:50,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:50,606 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-11-07 00:21:50,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:50,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:50,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:50,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:50,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:50,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:50,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:50,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:50,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:50,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:50,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:50,931 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 00:21:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:54,148 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-11-07 00:21:54,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:21:54,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 00:21:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:54,165 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 00:21:54,165 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 00:21:54,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 00:21:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 00:21:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 00:21:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-07 00:21:54,242 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-11-07 00:21:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:54,243 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-07 00:21:54,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-07 00:21:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 00:21:54,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:54,252 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:21:54,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:54,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-11-07 00:21:54,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:54,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:54,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:54,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:54,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:54,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:54,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:54,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:54,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:54,524 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-11-07 00:21:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:57,727 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-11-07 00:21:57,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:21:57,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-07 00:21:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:57,776 INFO L225 Difference]: With dead ends: 6200 [2018-11-07 00:21:57,776 INFO L226 Difference]: Without dead ends: 4475 [2018-11-07 00:21:57,803 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 00:21:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-11-07 00:21:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-11-07 00:21:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-11-07 00:21:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-11-07 00:21:57,959 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-11-07 00:21:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:57,960 INFO L480 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-11-07 00:21:57,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-11-07 00:21:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 00:21:57,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:57,979 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-11-07 00:21:57,979 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:57,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-11-07 00:21:57,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:57,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:57,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:57,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:57,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 00:21:59,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:59,166 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:59,167 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 00:21:59,169 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:59,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:59,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:22:00,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:22:03,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:22:03,015 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:22:03,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:03,032 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:22:05,689 INFO L227 lantSequenceWeakener]: Weakened 302 states. On average, predicates are now at 77.4% of their original sizes. [2018-11-07 00:22:05,693 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:22:06,181 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 00:22:06,182 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:22:06,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:22:06,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-07 00:22:06,183 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:22:06,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:22:06,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:22:06,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:22:06,185 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 7 states. [2018-11-07 00:22:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:22:20,088 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-11-07 00:22:20,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:22:20,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-11-07 00:22:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:22:20,119 INFO L225 Difference]: With dead ends: 8763 [2018-11-07 00:22:20,119 INFO L226 Difference]: Without dead ends: 4477 [2018-11-07 00:22:20,143 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:22:20,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-11-07 00:22:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-11-07 00:22:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-11-07 00:22:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-11-07 00:22:20,282 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-11-07 00:22:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:22:20,282 INFO L480 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-11-07 00:22:20,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:22:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-11-07 00:22:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-07 00:22:20,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:22:20,299 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:22:20,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:22:20,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-11-07 00:22:20,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:22:20,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:20,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:22:20,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:20,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:22:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:22:20,814 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:22:21,003 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:22:21,221 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:22:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:22:21,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:22:21,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:22:21,999 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-07 00:22:22,000 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:22:22,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:22:22,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:22:23,352 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:22:30,102 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:22:30,102 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:22:30,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:30,115 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:22:33,273 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-07 00:22:33,274 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:23:20,918 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-11-07 00:23:20,919 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:23:20,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:23:20,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-11-07 00:23:20,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:23:20,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 00:23:20,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 00:23:20,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-11-07 00:23:20,921 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 19 states. [2018-11-07 00:25:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:35,649 INFO L93 Difference]: Finished difference Result 9724 states and 14163 transitions. [2018-11-07 00:25:35,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 00:25:35,649 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 324 [2018-11-07 00:25:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:35,675 INFO L225 Difference]: With dead ends: 9724 [2018-11-07 00:25:35,675 INFO L226 Difference]: Without dead ends: 5438 [2018-11-07 00:25:35,700 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 330 GetRequests, 246 SyntacticMatches, 60 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-11-07 00:25:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2018-11-07 00:25:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 5189. [2018-11-07 00:25:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2018-11-07 00:25:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7308 transitions. [2018-11-07 00:25:35,943 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7308 transitions. Word has length 324 [2018-11-07 00:25:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:35,944 INFO L480 AbstractCegarLoop]: Abstraction has 5189 states and 7308 transitions. [2018-11-07 00:25:35,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 00:25:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7308 transitions. [2018-11-07 00:25:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 00:25:35,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:35,969 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-11-07 00:25:35,969 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:35,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1429919366, now seen corresponding path program 1 times [2018-11-07 00:25:35,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:35,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:35,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:35,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:35,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 254 proven. 224 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 00:25:37,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:25:37,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:25:37,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 00:25:37,392 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:25:37,397 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:25:37,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:25:38,254 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 00:25:41,199 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 00:25:41,200 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 00:25:41,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 00:25:41,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:25:41,201 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 00:25:41,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:41,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:25:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:41,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:25:41,404 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 00:25:41,605 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:25:41,606 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:25:41,611 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:25:41,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:41 BoogieIcfgContainer [2018-11-07 00:25:41,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:25:41,613 INFO L168 Benchmark]: Toolchain (without parser) took 239597.52 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:41,614 INFO L168 Benchmark]: CDTParser took 0.24 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 00:25:41,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:41,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:41,616 INFO L168 Benchmark]: Boogie Preprocessor took 108.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:25:41,617 INFO L168 Benchmark]: RCFGBuilder took 3567.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:41,618 INFO L168 Benchmark]: TraceAbstraction took 234933.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -436.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:41,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 827.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3567.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234933.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -436.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 425 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 234.8s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 158.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 893 SDtfs, 4801 SDslu, 702 SDs, 0 SdLazy, 5688 SolverSat, 1336 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 659 GetRequests, 563 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 49.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5189occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9958832591578225 AbsIntWeakeningRatio, 0.10078740157480315 AbsIntAvgWeakeningVarsNumRemoved, 494.6503937007874 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 434 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 947 NumberOfCodeBlocks, 947 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 942 ConstructedInterpolants, 0 QuantifiedInterpolants, 3414409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 354/604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown