java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:33:49,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:33:49,578 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:33:49,595 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:33:49,595 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:33:49,596 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:33:49,598 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:33:49,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:33:49,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:33:49,604 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:33:49,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:33:49,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:33:49,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:33:49,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:33:49,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:33:49,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:33:49,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:33:49,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:33:49,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:33:49,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:33:49,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:33:49,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:33:49,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:33:49,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:33:49,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:33:49,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:33:49,644 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:33:49,645 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:33:49,645 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:33:49,646 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:33:49,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:33:49,647 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:33:49,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:33:49,648 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:33:49,653 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:33:49,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:33:49,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:33:49,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:33:49,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:33:49,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:33:49,682 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:33:49,682 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:33:49,682 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:33:49,683 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:33:49,686 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:33:49,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:33:49,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:33:49,687 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:33:49,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:33:49,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:33:49,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:33:49,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:33:49,688 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:33:49,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:33:49,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:33:49,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:33:49,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:33:49,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:33:49,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:33:49,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:33:49,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:33:49,690 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:33:49,690 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:33:49,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:33:49,693 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:33:49,693 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:33:49,693 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:33:49,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:33:49,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:33:49,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:33:49,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:33:49,778 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:33:49,779 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-11-12 16:33:49,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4258941/910fb38590b94156bff3ce96a137cd72/FLAGd65954333 [2018-11-12 16:33:50,532 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:33:50,533 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-11-12 16:33:50,552 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4258941/910fb38590b94156bff3ce96a137cd72/FLAGd65954333 [2018-11-12 16:33:50,572 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4258941/910fb38590b94156bff3ce96a137cd72 [2018-11-12 16:33:50,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:33:50,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:33:50,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:33:50,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:33:50,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:33:50,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:33:50" (1/1) ... [2018-11-12 16:33:50,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4102564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:50, skipping insertion in model container [2018-11-12 16:33:50,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:33:50" (1/1) ... [2018-11-12 16:33:50,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:33:50,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:33:51,565 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:33:51,570 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:33:51,943 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:33:51,968 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:33:51,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51 WrapperNode [2018-11-12 16:33:51,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:33:51,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:33:51,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:33:51,970 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:33:52,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:33:52,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:33:52,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:33:52,202 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:33:52,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... [2018-11-12 16:33:52,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:33:52,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:33:52,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:33:52,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:33:52,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:33:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:33:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:33:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:33:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:33:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:33:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:33:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:33:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:33:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:33:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:33:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:33:57,956 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:33:57,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:33:57 BoogieIcfgContainer [2018-11-12 16:33:57,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:33:57,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:33:57,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:33:57,963 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:33:57,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:33:50" (1/3) ... [2018-11-12 16:33:57,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c097690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:33:57, skipping insertion in model container [2018-11-12 16:33:57,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:33:51" (2/3) ... [2018-11-12 16:33:57,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c097690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:33:57, skipping insertion in model container [2018-11-12 16:33:57,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:33:57" (3/3) ... [2018-11-12 16:33:57,967 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label07_false-unreach-call.c [2018-11-12 16:33:57,979 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:33:57,990 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:33:58,007 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:33:58,048 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:33:58,048 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:33:58,048 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:33:58,048 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:33:58,049 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:33:58,049 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:33:58,049 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:33:58,049 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:33:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:33:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-12 16:33:58,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:58,091 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:33:58,093 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:58,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash 117084481, now seen corresponding path program 1 times [2018-11-12 16:33:58,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:58,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:58,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:58,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:58,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:33:58,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:33:58,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:33:58,463 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:33:58,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:33:58,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:33:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:33:58,494 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:34:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:04,674 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 16:34:04,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:34:04,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-12 16:34:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:04,706 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 16:34:04,706 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 16:34:04,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 16:34:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-12 16:34:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-12 16:34:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-12 16:34:04,829 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 17 [2018-11-12 16:34:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:04,830 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-12 16:34:04,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:34:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-12 16:34:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-12 16:34:04,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:04,836 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:34:04,836 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:04,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash 932863477, now seen corresponding path program 1 times [2018-11-12 16:34:04,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:04,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:04,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:04,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:04,838 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:34:05,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:34:05,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:34:05,123 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:05,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:34:05,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:34:05,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:05,126 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-12 16:34:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:10,040 INFO L93 Difference]: Finished difference Result 2757 states and 5143 transitions. [2018-11-12 16:34:10,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:34:10,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-11-12 16:34:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:10,065 INFO L225 Difference]: With dead ends: 2757 [2018-11-12 16:34:10,066 INFO L226 Difference]: Without dead ends: 2004 [2018-11-12 16:34:10,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2018-11-12 16:34:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1999. [2018-11-12 16:34:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-11-12 16:34:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3239 transitions. [2018-11-12 16:34:10,171 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3239 transitions. Word has length 87 [2018-11-12 16:34:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:10,173 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 3239 transitions. [2018-11-12 16:34:10,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:34:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3239 transitions. [2018-11-12 16:34:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-12 16:34:10,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:10,187 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:34:10,187 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:10,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash 593337787, now seen corresponding path program 1 times [2018-11-12 16:34:10,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:10,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:10,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:10,189 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:34:10,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:34:10,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:34:10,540 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:10,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:34:10,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:34:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:34:10,542 INFO L87 Difference]: Start difference. First operand 1999 states and 3239 transitions. Second operand 5 states. [2018-11-12 16:34:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:19,396 INFO L93 Difference]: Finished difference Result 7066 states and 11537 transitions. [2018-11-12 16:34:19,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:34:19,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-12 16:34:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:19,429 INFO L225 Difference]: With dead ends: 7066 [2018-11-12 16:34:19,429 INFO L226 Difference]: Without dead ends: 5073 [2018-11-12 16:34:19,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:34:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2018-11-12 16:34:19,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4992. [2018-11-12 16:34:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2018-11-12 16:34:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6705 transitions. [2018-11-12 16:34:19,598 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6705 transitions. Word has length 141 [2018-11-12 16:34:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:19,599 INFO L480 AbstractCegarLoop]: Abstraction has 4992 states and 6705 transitions. [2018-11-12 16:34:19,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:34:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6705 transitions. [2018-11-12 16:34:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-12 16:34:19,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:19,606 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:34:19,606 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:19,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:19,606 INFO L82 PathProgramCache]: Analyzing trace with hash -662320847, now seen corresponding path program 1 times [2018-11-12 16:34:19,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:19,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:19,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:19,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:19,608 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:34:19,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:34:19,969 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:34:19,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-12 16:34:19,972 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [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], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:34:20,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:34:20,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:34:20,538 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:34:22,828 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:34:22,831 INFO L272 AbstractInterpreter]: Visited 130 different actions 873 times. Merged at 5 different actions 29 times. Widened at 1 different actions 2 times. Performed 16283 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16283 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:34:22,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:22,861 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:34:24,117 INFO L227 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-12 16:34:24,117 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:34:27,639 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-12 16:34:27,639 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:34:27,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:34:27,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:34:27,640 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:27,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:34:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:34:27,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:34:27,642 INFO L87 Difference]: Start difference. First operand 4992 states and 6705 transitions. Second operand 19 states. [2018-11-12 16:35:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:35:34,007 INFO L93 Difference]: Finished difference Result 13028 states and 17013 transitions. [2018-11-12 16:35:34,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 16:35:34,007 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 237 [2018-11-12 16:35:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:35:34,044 INFO L225 Difference]: With dead ends: 13028 [2018-11-12 16:35:34,044 INFO L226 Difference]: Without dead ends: 8042 [2018-11-12 16:35:34,064 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 187 SyntacticMatches, 33 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:35:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2018-11-12 16:35:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 7374. [2018-11-12 16:35:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7374 states. [2018-11-12 16:35:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7374 states to 7374 states and 9160 transitions. [2018-11-12 16:35:34,225 INFO L78 Accepts]: Start accepts. Automaton has 7374 states and 9160 transitions. Word has length 237 [2018-11-12 16:35:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:35:34,226 INFO L480 AbstractCegarLoop]: Abstraction has 7374 states and 9160 transitions. [2018-11-12 16:35:34,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:35:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 7374 states and 9160 transitions. [2018-11-12 16:35:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-12 16:35:34,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:35:34,240 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:35:34,241 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:35:34,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:35:34,241 INFO L82 PathProgramCache]: Analyzing trace with hash 515779473, now seen corresponding path program 1 times [2018-11-12 16:35:34,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:35:34,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:35:34,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:35:34,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:35:34,243 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:35:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:35:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:35:35,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:35:35,126 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:35:35,127 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-12 16:35:35,129 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [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], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:35:35,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:35:35,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:35:35,321 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:35:36,106 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:35:36,107 INFO L272 AbstractInterpreter]: Visited 283 different actions 1119 times. Merged at 7 different actions 20 times. Never widened. Performed 18259 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18259 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:35:36,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:35:36,112 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:35:36,689 INFO L227 lantSequenceWeakener]: Weakened 401 states. On average, predicates are now at 79.9% of their original sizes. [2018-11-12 16:35:36,689 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:35:37,285 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-11-12 16:35:37,285 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:35:37,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:35:37,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-12 16:35:37,286 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:35:37,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:35:37,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:35:37,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:35:37,287 INFO L87 Difference]: Start difference. First operand 7374 states and 9160 transitions. Second operand 11 states. [2018-11-12 16:36:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:13,579 INFO L93 Difference]: Finished difference Result 15552 states and 20963 transitions. [2018-11-12 16:36:13,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 16:36:13,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 404 [2018-11-12 16:36:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:13,641 INFO L225 Difference]: With dead ends: 15552 [2018-11-12 16:36:13,641 INFO L226 Difference]: Without dead ends: 10566 [2018-11-12 16:36:13,680 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:36:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2018-11-12 16:36:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 10518. [2018-11-12 16:36:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10518 states. [2018-11-12 16:36:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 13063 transitions. [2018-11-12 16:36:13,934 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 13063 transitions. Word has length 404 [2018-11-12 16:36:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:13,935 INFO L480 AbstractCegarLoop]: Abstraction has 10518 states and 13063 transitions. [2018-11-12 16:36:13,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:36:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 13063 transitions. [2018-11-12 16:36:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-12 16:36:13,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:13,957 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:13,958 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:13,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 978094294, now seen corresponding path program 1 times [2018-11-12 16:36:13,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:13,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:13,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:13,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:13,960 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-12 16:36:14,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:14,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:36:14,816 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:14,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:36:14,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:36:14,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:36:14,824 INFO L87 Difference]: Start difference. First operand 10518 states and 13063 transitions. Second operand 5 states. [2018-11-12 16:36:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:20,115 INFO L93 Difference]: Finished difference Result 22434 states and 29570 transitions. [2018-11-12 16:36:20,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:36:20,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2018-11-12 16:36:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:20,172 INFO L225 Difference]: With dead ends: 22434 [2018-11-12 16:36:20,172 INFO L226 Difference]: Without dead ends: 15230 [2018-11-12 16:36:20,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:36:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2018-11-12 16:36:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 15124. [2018-11-12 16:36:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15124 states. [2018-11-12 16:36:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 18575 transitions. [2018-11-12 16:36:20,500 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 18575 transitions. Word has length 477 [2018-11-12 16:36:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:20,501 INFO L480 AbstractCegarLoop]: Abstraction has 15124 states and 18575 transitions. [2018-11-12 16:36:20,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:36:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 18575 transitions. [2018-11-12 16:36:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-12 16:36:20,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:20,533 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:20,533 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:20,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1210367492, now seen corresponding path program 1 times [2018-11-12 16:36:20,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:20,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:20,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:20,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:20,535 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:36:21,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:21,106 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:36:21,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-11-12 16:36:21,107 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [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], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [868], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:36:21,115 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:36:21,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:36:21,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:36:24,550 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:36:24,550 INFO L272 AbstractInterpreter]: Visited 285 different actions 2543 times. Merged at 8 different actions 71 times. Widened at 1 different actions 4 times. Performed 47328 root evaluator evaluations with a maximum evaluation depth of 6. Performed 47328 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 16 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:36:24,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:24,560 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:36:24,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:24,560 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:36:24,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:24,570 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:36:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:24,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:36:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:36:25,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:36:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:36:25,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:36:25,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 16:36:25,898 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:36:25,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:36:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:36:25,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:36:25,900 INFO L87 Difference]: Start difference. First operand 15124 states and 18575 transitions. Second operand 9 states. [2018-11-12 16:36:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:33,593 INFO L93 Difference]: Finished difference Result 35480 states and 45979 transitions. [2018-11-12 16:36:33,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 16:36:33,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 532 [2018-11-12 16:36:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:33,690 INFO L225 Difference]: With dead ends: 35480 [2018-11-12 16:36:33,690 INFO L226 Difference]: Without dead ends: 22744 [2018-11-12 16:36:33,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:36:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22744 states. [2018-11-12 16:36:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22744 to 22190. [2018-11-12 16:36:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22190 states. [2018-11-12 16:36:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22190 states to 22190 states and 25897 transitions. [2018-11-12 16:36:34,189 INFO L78 Accepts]: Start accepts. Automaton has 22190 states and 25897 transitions. Word has length 532 [2018-11-12 16:36:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:34,191 INFO L480 AbstractCegarLoop]: Abstraction has 22190 states and 25897 transitions. [2018-11-12 16:36:34,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:36:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 22190 states and 25897 transitions. [2018-11-12 16:36:34,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-12 16:36:34,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:34,229 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:34,229 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:34,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1681220267, now seen corresponding path program 1 times [2018-11-12 16:36:34,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:34,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:34,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:34,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:34,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-12 16:36:34,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:34,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:36:34,995 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:34,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:36:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:36:34,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:34,996 INFO L87 Difference]: Start difference. First operand 22190 states and 25897 transitions. Second operand 3 states. [2018-11-12 16:36:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:38,434 INFO L93 Difference]: Finished difference Result 42354 states and 51301 transitions. [2018-11-12 16:36:38,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:36:38,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-11-12 16:36:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:38,500 INFO L225 Difference]: With dead ends: 42354 [2018-11-12 16:36:38,500 INFO L226 Difference]: Without dead ends: 23482 [2018-11-12 16:36:38,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23482 states. [2018-11-12 16:36:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23482 to 22860. [2018-11-12 16:36:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22860 states. [2018-11-12 16:36:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22860 states to 22860 states and 27095 transitions. [2018-11-12 16:36:38,892 INFO L78 Accepts]: Start accepts. Automaton has 22860 states and 27095 transitions. Word has length 558 [2018-11-12 16:36:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:38,894 INFO L480 AbstractCegarLoop]: Abstraction has 22860 states and 27095 transitions. [2018-11-12 16:36:38,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:36:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 22860 states and 27095 transitions. [2018-11-12 16:36:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-11-12 16:36:38,928 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:38,929 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:38,929 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:38,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash 374819161, now seen corresponding path program 1 times [2018-11-12 16:36:38,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:38,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:38,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:38,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:38,931 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:40,204 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 16:36:40,668 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 16:36:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 144 proven. 347 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 16:36:41,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:41,739 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:36:41,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 577 with the following transitions: [2018-11-12 16:36:41,739 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:36:41,744 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:36:41,744 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:36:41,792 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:36:42,998 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:36:42,998 INFO L272 AbstractInterpreter]: Visited 286 different actions 1419 times. Merged at 7 different actions 37 times. Widened at 1 different actions 1 times. Performed 24636 root evaluator evaluations with a maximum evaluation depth of 6. Performed 24636 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:36:43,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:43,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:36:43,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:43,006 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:36:43,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:43,016 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:36:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:43,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:36:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 388 proven. 41 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-11-12 16:36:44,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:36:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 55 proven. 436 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 16:36:45,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:36:45,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 20 [2018-11-12 16:36:45,426 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:36:45,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 16:36:45,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 16:36:45,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:36:45,428 INFO L87 Difference]: Start difference. First operand 22860 states and 27095 transitions. Second operand 15 states. [2018-11-12 16:37:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:05,977 INFO L93 Difference]: Finished difference Result 64405 states and 79220 transitions. [2018-11-12 16:37:05,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-12 16:37:05,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 576 [2018-11-12 16:37:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:06,094 INFO L225 Difference]: With dead ends: 64405 [2018-11-12 16:37:06,094 INFO L226 Difference]: Without dead ends: 39955 [2018-11-12 16:37:06,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1173 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=644, Invalid=2112, Unknown=0, NotChecked=0, Total=2756 [2018-11-12 16:37:06,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39955 states. [2018-11-12 16:37:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39955 to 38170. [2018-11-12 16:37:06,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38170 states. [2018-11-12 16:37:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38170 states to 38170 states and 45802 transitions. [2018-11-12 16:37:06,770 INFO L78 Accepts]: Start accepts. Automaton has 38170 states and 45802 transitions. Word has length 576 [2018-11-12 16:37:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:06,771 INFO L480 AbstractCegarLoop]: Abstraction has 38170 states and 45802 transitions. [2018-11-12 16:37:06,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 16:37:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 38170 states and 45802 transitions. [2018-11-12 16:37:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-11-12 16:37:06,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:06,809 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:06,809 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:06,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:06,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1613771890, now seen corresponding path program 1 times [2018-11-12 16:37:06,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:06,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:06,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:06,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:06,812 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-12 16:37:07,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:07,654 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:07,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 641 with the following transitions: [2018-11-12 16:37:07,655 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [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], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:07,659 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:07,659 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:07,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:08,849 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:08,850 INFO L272 AbstractInterpreter]: Visited 287 different actions 1137 times. Merged at 8 different actions 26 times. Never widened. Performed 18081 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18081 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:37:08,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:08,851 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:09,555 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 80.5% of their original sizes. [2018-11-12 16:37:09,555 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:09,911 INFO L415 sIntCurrentIteration]: We unified 639 AI predicates to 639 [2018-11-12 16:37:09,911 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:09,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:09,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 16:37:09,912 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:09,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:37:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:37:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:37:09,913 INFO L87 Difference]: Start difference. First operand 38170 states and 45802 transitions. Second operand 20 states. Received shutdown request... [2018-11-12 16:37:25,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 16:37:25,682 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:37:25,688 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:37:25,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:37:25 BoogieIcfgContainer [2018-11-12 16:37:25,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:37:25,689 INFO L168 Benchmark]: Toolchain (without parser) took 215104.26 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -601.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:37:25,690 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. [2018-11-12 16:37:25,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1382.21 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. [2018-11-12 16:37:25,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:25,692 INFO L168 Benchmark]: Boogie Preprocessor took 144.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:25,693 INFO L168 Benchmark]: RCFGBuilder took 5611.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 294.1 MB). Peak memory consumption was 294.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:25,694 INFO L168 Benchmark]: TraceAbstraction took 207729.62 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -130.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:37:25,699 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 1382.21 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 231.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5611.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 294.1 MB). Peak memory consumption was 294.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207729.62 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -130.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (38170states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (3342 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.6s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 176.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2596 SDtfs, 23177 SDslu, 3396 SDs, 0 SdLazy, 42172 SolverSat, 6198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3671 GetRequests, 3465 SyntacticMatches, 38 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38170occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.7s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.997747132387124 AbsIntWeakeningRatio, 0.07198748043818466 AbsIntAvgWeakeningVarsNumRemoved, 17.9452269170579 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 4224 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 4777 NumberOfCodeBlocks, 4777 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 5871 ConstructedInterpolants, 0 QuantifiedInterpolants, 16016464 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 3701/4733 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown