java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem10_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:28:28,615 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:28:28,617 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:28:28,630 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:28:28,630 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:28:28,631 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:28:28,632 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:28:28,634 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:28:28,636 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:28:28,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:28:28,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:28:28,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:28:28,639 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:28:28,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:28:28,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:28:28,642 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:28:28,643 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:28:28,645 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:28:28,647 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:28:28,649 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:28:28,650 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:28:28,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:28:28,654 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:28:28,654 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:28:28,654 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:28:28,655 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:28:28,656 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:28:28,657 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:28:28,658 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:28:28,659 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:28:28,660 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:28:28,660 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:28:28,661 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:28:28,661 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:28:28,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:28:28,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:28:28,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:28:28,679 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:28:28,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:28:28,680 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:28:28,680 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:28:28,681 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:28:28,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:28:28,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:28:28,681 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:28:28,681 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:28:28,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:28:28,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:28:28,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:28:28,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:28:28,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:28:28,683 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:28:28,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:28:28,683 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:28:28,684 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:28:28,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:28:28,684 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:28:28,684 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:28:28,684 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:28:28,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:28:28,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:28:28,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:28:28,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:28:28,685 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:28:28,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:28:28,686 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:28:28,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:28:28,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:28:28,686 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:28:28,687 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:28:28,687 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:28:28,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:28:28,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:28:28,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:28:28,749 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:28:28,749 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:28:28,750 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-10-26 23:28:28,809 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9aa76d2f/a06b59ac65db4a9a8d07c1531589dabc/FLAG9813b9fee [2018-10-26 23:28:29,412 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:28:29,413 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-10-26 23:28:29,433 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9aa76d2f/a06b59ac65db4a9a8d07c1531589dabc/FLAG9813b9fee [2018-10-26 23:28:29,460 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9aa76d2f/a06b59ac65db4a9a8d07c1531589dabc [2018-10-26 23:28:29,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:28:29,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:28:29,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:29,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:28:29,480 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:28:29,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:29" (1/1) ... [2018-10-26 23:28:29,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672e0e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:29, skipping insertion in model container [2018-10-26 23:28:29,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:29" (1/1) ... [2018-10-26 23:28:29,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:28:29,564 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:28:30,029 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:30,034 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:28:30,159 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:30,185 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:28:30,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30 WrapperNode [2018-10-26 23:28:30,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:30,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:30,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:28:30,187 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:28:30,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:30,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:28:30,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:28:30,370 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:28:30,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... [2018-10-26 23:28:30,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:28:30,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:28:30,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:28:30,498 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:28:30,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 23:28:30,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:28:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:28:30,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:28:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:28:30,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:28:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:28:30,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:28:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:28:33,723 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:28:33,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:33 BoogieIcfgContainer [2018-10-26 23:28:33,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:28:33,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:28:33,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:28:33,733 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:28:33,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:28:29" (1/3) ... [2018-10-26 23:28:33,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76597aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:33, skipping insertion in model container [2018-10-26 23:28:33,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:30" (2/3) ... [2018-10-26 23:28:33,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76597aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:33, skipping insertion in model container [2018-10-26 23:28:33,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:33" (3/3) ... [2018-10-26 23:28:33,739 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label12_false-unreach-call.c [2018-10-26 23:28:33,748 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:28:33,755 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:28:33,773 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:28:33,811 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:28:33,811 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:28:33,811 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:28:33,811 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:28:33,811 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:28:33,812 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:28:33,812 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:28:33,812 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:28:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:28:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 23:28:33,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:28:33,844 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:28:33,846 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:28:33,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:33,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1125399135, now seen corresponding path program 1 times [2018-10-26 23:28:33,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:28:33,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:33,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:28:33,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:33,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:28:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:28:34,211 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:28:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:28:34,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:28:34,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:28:34,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:28:34,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:28:34,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:28:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:28:34,254 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-26 23:28:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:28:36,467 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-26 23:28:36,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:28:36,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-26 23:28:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:28:36,487 INFO L225 Difference]: With dead ends: 574 [2018-10-26 23:28:36,487 INFO L226 Difference]: Without dead ends: 356 [2018-10-26 23:28:36,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:28:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-26 23:28:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-26 23:28:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-26 23:28:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-10-26 23:28:36,567 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 19 [2018-10-26 23:28:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:28:36,567 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-10-26 23:28:36,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:28:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-10-26 23:28:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-26 23:28:36,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:28:36,574 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:28:36,574 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:28:36,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 407451016, now seen corresponding path program 1 times [2018-10-26 23:28:36,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:28:36,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:36,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:28:36,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:36,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:28:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:28:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 23:28:36,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:28:36,958 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:28:36,959 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 98 with the following transitions: [2018-10-26 23:28:36,961 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:28:37,034 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:28:37,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:28:39,429 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:28:39,543 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:28:39,545 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:28:39,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:39,585 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:28:41,324 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 73.42% of their original sizes. [2018-10-26 23:28:41,324 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:28:43,570 INFO L415 sIntCurrentIteration]: We unified 96 AI predicates to 96 [2018-10-26 23:28:43,570 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:28:43,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:28:43,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-26 23:28:43,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:28:43,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:28:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:28:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:28:43,575 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 10 states. [2018-10-26 23:29:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:44,955 INFO L93 Difference]: Finished difference Result 855 states and 1493 transitions. [2018-10-26 23:29:44,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:29:44,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2018-10-26 23:29:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:44,960 INFO L225 Difference]: With dead ends: 855 [2018-10-26 23:29:44,960 INFO L226 Difference]: Without dead ends: 505 [2018-10-26 23:29:44,963 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-26 23:29:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-10-26 23:29:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 500. [2018-10-26 23:29:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-10-26 23:29:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 762 transitions. [2018-10-26 23:29:45,021 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 762 transitions. Word has length 97 [2018-10-26 23:29:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:45,022 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 762 transitions. [2018-10-26 23:29:45,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:29:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 762 transitions. [2018-10-26 23:29:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-26 23:29:45,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:45,029 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:29:45,029 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:45,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:45,030 INFO L82 PathProgramCache]: Analyzing trace with hash 922326170, now seen corresponding path program 1 times [2018-10-26 23:29:45,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:45,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:45,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:45,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:45,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:45,363 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:29:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-26 23:29:45,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:29:45,427 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:29:45,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-10-26 23:29:45,427 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [498], [499], [503], [507], [511], [515], [519], [523], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:29:45,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:29:45,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:29:46,630 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:29:57,643 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:29:57,644 INFO L272 AbstractInterpreter]: Visited 86 different actions 486 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:29:57,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:57,652 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:29:59,274 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 73.42% of their original sizes. [2018-10-26 23:29:59,275 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:30:07,308 INFO L415 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2018-10-26 23:30:07,308 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:30:07,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:30:07,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-10-26 23:30:07,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:30:07,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-26 23:30:07,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-26 23:30:07,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-10-26 23:30:07,311 INFO L87 Difference]: Start difference. First operand 500 states and 762 transitions. Second operand 17 states. [2018-10-26 23:31:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:31:56,091 INFO L93 Difference]: Finished difference Result 1309 states and 2219 transitions. [2018-10-26 23:31:56,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 23:31:56,092 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2018-10-26 23:31:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:31:56,098 INFO L225 Difference]: With dead ends: 1309 [2018-10-26 23:31:56,098 INFO L226 Difference]: Without dead ends: 959 [2018-10-26 23:31:56,100 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 175 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-10-26 23:31:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2018-10-26 23:31:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 872. [2018-10-26 23:31:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2018-10-26 23:31:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1171 transitions. [2018-10-26 23:31:56,193 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1171 transitions. Word has length 168 [2018-10-26 23:31:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:31:56,194 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1171 transitions. [2018-10-26 23:31:56,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-26 23:31:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1171 transitions. [2018-10-26 23:31:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-26 23:31:56,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:31:56,197 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:31:56,198 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:31:56,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:31:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1586204051, now seen corresponding path program 1 times [2018-10-26 23:31:56,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:31:56,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:31:56,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:31:56,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:31:56,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:31:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:31:56,473 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:31:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-26 23:31:56,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:31:56,570 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:31:56,571 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-10-26 23:31:56,571 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:31:56,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:31:56,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:31:58,004 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:32:09,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:32:09,659 INFO L272 AbstractInterpreter]: Visited 88 different actions 594 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-26 23:32:09,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:09,667 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:32:10,685 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 76.32% of their original sizes. [2018-10-26 23:32:10,685 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:32:17,149 INFO L415 sIntCurrentIteration]: We unified 176 AI predicates to 176 [2018-10-26 23:32:17,149 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:32:17,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:32:17,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [8] total 26 [2018-10-26 23:32:17,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:17,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:32:17,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:32:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:32:17,151 INFO L87 Difference]: Start difference. First operand 872 states and 1171 transitions. Second operand 20 states. Received shutdown request... [2018-10-26 23:32:38,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:32:38,072 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:32:38,077 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:32:38,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:32:38 BoogieIcfgContainer [2018-10-26 23:32:38,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:32:38,079 INFO L168 Benchmark]: Toolchain (without parser) took 248606.13 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -657.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:38,080 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-26 23:32:38,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.21 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:38,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:38,083 INFO L168 Benchmark]: Boogie Preprocessor took 127.57 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. [2018-10-26 23:32:38,089 INFO L168 Benchmark]: RCFGBuilder took 3229.15 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: 129.4 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:38,090 INFO L168 Benchmark]: TraceAbstraction took 244348.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -1.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:38,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.21 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.57 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 3229.15 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: 129.4 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244348.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -1.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (872states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (71 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 244.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 193.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 519 SDtfs, 2860 SDslu, 575 SDs, 0 SdLazy, 3185 SolverSat, 688 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 461 GetRequests, 384 SyntacticMatches, 18 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=872occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.992716483443927 AbsIntWeakeningRatio, 0.16400911161731208 AbsIntAvgWeakeningVarsNumRemoved, 381.33029612756263 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 92 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 461 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 228513 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 179/209 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown