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/Problem15_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:37:05,596 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:37:05,598 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:37:05,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:37:05,611 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:37:05,612 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:37:05,613 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:37:05,615 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:37:05,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:37:05,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:37:05,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:37:05,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:37:05,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:37:05,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:37:05,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:37:05,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:37:05,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:37:05,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:37:05,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:37:05,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:37:05,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:37:05,634 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:37:05,636 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:37:05,636 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:37:05,636 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:37:05,637 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:37:05,638 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:37:05,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:37:05,639 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:37:05,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:37:05,641 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:37:05,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:37:05,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:37:05,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:37:05,643 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:37:05,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:37:05,644 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 [2018-10-24 18:37:05,659 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:37:05,660 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:37:05,660 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:37:05,661 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:37:05,661 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:37:05,661 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:37:05,661 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:37:05,661 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:37:05,662 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:37:05,662 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:37:05,662 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:37:05,662 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:37:05,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:37:05,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:37:05,663 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:37:05,663 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:37:05,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:37:05,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:37:05,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:37:05,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:37:05,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:37:05,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:37:05,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:37:05,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:37:05,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:37:05,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:37:05,666 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:37:05,667 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:37:05,667 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:37:05,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:37:05,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:37:05,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:37:05,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:37:05,728 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:37:05,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-10-24 18:37:05,785 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/707f55b13/fc0524f24ceb499f8264a5306c1bfa53/FLAG8c7375fad [2018-10-24 18:37:06,498 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:37:06,499 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-10-24 18:37:06,517 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/707f55b13/fc0524f24ceb499f8264a5306c1bfa53/FLAG8c7375fad [2018-10-24 18:37:06,538 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/707f55b13/fc0524f24ceb499f8264a5306c1bfa53 [2018-10-24 18:37:06,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:37:06,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:37:06,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:37:06,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:37:06,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:37:06,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:37:06" (1/1) ... [2018-10-24 18:37:06,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:06, skipping insertion in model container [2018-10-24 18:37:06,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:37:06" (1/1) ... [2018-10-24 18:37:06,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:37:06,656 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:37:07,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:37:07,471 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:37:07,829 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:37:07,877 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:37:07,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07 WrapperNode [2018-10-24 18:37:07,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:37:07,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:37:07,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:37:07,886 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:37:07,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:07,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:37:08,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:37:08,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:37:08,304 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:37:08,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (1/1) ... [2018-10-24 18:37:08,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:37:08,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:37:08,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:37:08,497 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:37:08,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (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 [2018-10-24 18:37:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:37:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:37:08,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:37:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:37:08,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:37:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:37:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:37:08,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:37:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:37:08,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:37:16,028 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:37:16,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:37:16 BoogieIcfgContainer [2018-10-24 18:37:16,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:37:16,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:37:16,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:37:16,034 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:37:16,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:37:06" (1/3) ... [2018-10-24 18:37:16,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:37:16, skipping insertion in model container [2018-10-24 18:37:16,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:37:07" (2/3) ... [2018-10-24 18:37:16,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:37:16, skipping insertion in model container [2018-10-24 18:37:16,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:37:16" (3/3) ... [2018-10-24 18:37:16,039 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label22_false-unreach-call.c [2018-10-24 18:37:16,049 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:37:16,059 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:37:16,079 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:37:16,123 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:37:16,123 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:37:16,123 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:37:16,123 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:37:16,124 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:37:16,124 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:37:16,124 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:37:16,124 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:37:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:37:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 18:37:16,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:16,176 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:16,178 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:16,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash 417311457, now seen corresponding path program 1 times [2018-10-24 18:37:16,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:16,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:16,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:16,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:16,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:16,662 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 18:37:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:37:16,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:16,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:37:16,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:16,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:37:16,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:37:16,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:37:16,701 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 18:37:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:27,837 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 18:37:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:37:27,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-24 18:37:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:27,870 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 18:37:27,870 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 18:37:27,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:37:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 18:37:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-24 18:37:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-24 18:37:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-24 18:37:28,027 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 25 [2018-10-24 18:37:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:28,027 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-24 18:37:28,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:37:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-24 18:37:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:37:28,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:28,038 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:28,038 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:28,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -764927732, now seen corresponding path program 1 times [2018-10-24 18:37:28,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:28,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:28,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:28,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:28,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:37:28,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:28,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:37:28,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:28,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:37:28,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:37:28,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:37:28,372 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-24 18:37:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:36,760 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-24 18:37:36,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:37:36,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-24 18:37:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:36,780 INFO L225 Difference]: With dead ends: 3240 [2018-10-24 18:37:36,781 INFO L226 Difference]: Without dead ends: 2155 [2018-10-24 18:37:36,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:37:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-24 18:37:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-24 18:37:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-24 18:37:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-24 18:37:36,897 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 98 [2018-10-24 18:37:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:36,898 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-24 18:37:36,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:37:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-24 18:37:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 18:37:36,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:36,909 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:36,910 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:36,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash -349048548, now seen corresponding path program 1 times [2018-10-24 18:37:36,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:36,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:36,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:36,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:36,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:37:37,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:37,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:37:37,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:37,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:37:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:37:37,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:37:37,109 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-24 18:37:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:45,186 INFO L93 Difference]: Finished difference Result 7944 states and 12443 transitions. [2018-10-24 18:37:45,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:37:45,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 18:37:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:45,229 INFO L225 Difference]: With dead ends: 7944 [2018-10-24 18:37:45,230 INFO L226 Difference]: Without dead ends: 5836 [2018-10-24 18:37:45,257 INFO L605 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 [2018-10-24 18:37:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-10-24 18:37:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-10-24 18:37:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-10-24 18:37:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-10-24 18:37:45,460 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 106 [2018-10-24 18:37:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:45,462 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-10-24 18:37:45,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:37:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-10-24 18:37:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 18:37:45,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:45,479 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:45,479 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:45,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1121522118, now seen corresponding path program 1 times [2018-10-24 18:37:45,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:45,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:45,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:45,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:45,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:45,864 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:37:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:37:46,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:37:46,258 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:37:46,259 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-24 18:37:46,262 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:37:46,342 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:37:46,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:37:48,557 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:37:49,567 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:37:49,569 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:37:49,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:49,588 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:37:51,736 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-24 18:37:51,736 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:37:52,208 INFO L413 sIntCurrentIteration]: We have 194 unified AI predicates [2018-10-24 18:37:52,208 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:37:52,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:37:52,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 18:37:52,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:52,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:37:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:37:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:37:52,211 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-10-24 18:38:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:38:50,532 INFO L93 Difference]: Finished difference Result 11972 states and 16730 transitions. [2018-10-24 18:38:50,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:38:50,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2018-10-24 18:38:50,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:38:50,569 INFO L225 Difference]: With dead ends: 11972 [2018-10-24 18:38:50,569 INFO L226 Difference]: Without dead ends: 6144 [2018-10-24 18:38:50,600 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:38:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-10-24 18:38:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2018-10-24 18:38:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2018-10-24 18:38:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8490 transitions. [2018-10-24 18:38:50,782 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8490 transitions. Word has length 195 [2018-10-24 18:38:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:38:50,782 INFO L481 AbstractCegarLoop]: Abstraction has 6142 states and 8490 transitions. [2018-10-24 18:38:50,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:38:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8490 transitions. [2018-10-24 18:38:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-24 18:38:50,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:38:50,793 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-10-24 18:38:50,793 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:38:50,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:38:50,794 INFO L82 PathProgramCache]: Analyzing trace with hash 138024112, now seen corresponding path program 1 times [2018-10-24 18:38:50,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:38:50,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:38:50,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:38:50,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:38:50,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:38:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:38:51,154 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:38:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 60 proven. 212 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 18:38:51,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:38:51,671 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:38:51,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-10-24 18:38:51,672 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:38:51,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:38:51,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:38:52,959 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:39:01,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:39:01,215 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:39:01,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:39:01,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:39:04,382 INFO L232 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.83% of their original sizes. [2018-10-24 18:39:04,382 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 18:41:00,851 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:41:00,855 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:41:00,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:41:00 BoogieIcfgContainer [2018-10-24 18:41:00,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:41:00,857 INFO L168 Benchmark]: Toolchain (without parser) took 234306.35 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -166.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,858 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:41:00,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1326.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 423.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -850.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,861 INFO L168 Benchmark]: Boogie Preprocessor took 192.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,861 INFO L168 Benchmark]: RCFGBuilder took 7533.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 309.4 MB). Peak memory consumption was 309.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,862 INFO L168 Benchmark]: TraceAbstraction took 224825.73 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 255.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 18:41:00,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1326.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 423.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -850.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7533.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 309.4 MB). Peak memory consumption was 309.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224825.73 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 255.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was analyzing trace of length 292 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 224.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 86.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1497 SDtfs, 3730 SDslu, 837 SDs, 0 SdLazy, 6681 SolverSat, 1732 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 57.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 216 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6142occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949507426039045 AbsIntWeakeningRatio, 0.11983471074380166 AbsIntAvgWeakeningVarsNumRemoved, 413.99793388429754 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 424 NumberOfCodeBlocks, 424 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 205580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 77/142 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown