java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:08:18,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:08:18,793 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:08:18,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:08:18,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:08:18,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:08:18,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:08:18,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:08:18,811 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:08:18,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:08:18,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:08:18,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:08:18,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:08:18,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:08:18,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:08:18,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:08:18,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:08:18,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:08:18,822 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:08:18,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:08:18,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:08:18,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:08:18,828 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:08:18,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:08:18,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:08:18,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:08:18,843 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:08:18,844 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:08:18,875 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:08:18,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:08:18,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:08:18,877 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:08:18,878 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:08:18,878 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:08:18,878 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:08:18,878 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:08:18,878 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:08:18,879 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:08:18,879 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:08:18,879 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:08:18,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:08:18,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:08:18,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:08:18,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:08:18,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:08:18,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:08:18,882 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:08:18,882 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:08:18,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:08:18,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:08:18,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:08:18,883 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:08:18,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:08:18,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:08:18,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:08:18,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:08:18,884 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:08:18,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:08:18,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:08:18,885 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:08:18,885 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:08:18,885 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:08:18,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:08:18,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:08:18,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:08:18,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:08:18,960 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:08:18,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c [2018-10-24 21:08:19,025 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eefa40532/0137c7eb4564417c9bfa57affc79f196/FLAG1c42f2d52 [2018-10-24 21:08:19,635 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:08:19,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c [2018-10-24 21:08:19,666 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eefa40532/0137c7eb4564417c9bfa57affc79f196/FLAG1c42f2d52 [2018-10-24 21:08:19,688 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eefa40532/0137c7eb4564417c9bfa57affc79f196 [2018-10-24 21:08:19,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:08:19,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:08:19,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:19,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:08:19,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:08:19,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:19" (1/1) ... [2018-10-24 21:08:19,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:19, skipping insertion in model container [2018-10-24 21:08:19,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:19" (1/1) ... [2018-10-24 21:08:19,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:08:19,799 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:08:20,523 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:20,528 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:08:20,727 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:20,747 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:08:20,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20 WrapperNode [2018-10-24 21:08:20,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:20,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:20,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:08:20,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:08:20,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:20,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:21,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:08:21,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:08:21,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:08:21,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... [2018-10-24 21:08:21,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:08:21,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:08:21,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:08:21,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:08:21,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:08:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:08:21,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:08:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:08:21,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:08:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:08:21,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:08:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:08:21,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:08:25,734 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:08:25,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:25 BoogieIcfgContainer [2018-10-24 21:08:25,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:08:25,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:08:25,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:08:25,740 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:08:25,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:08:19" (1/3) ... [2018-10-24 21:08:25,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68911bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:25, skipping insertion in model container [2018-10-24 21:08:25,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:20" (2/3) ... [2018-10-24 21:08:25,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68911bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:25, skipping insertion in model container [2018-10-24 21:08:25,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:25" (3/3) ... [2018-10-24 21:08:25,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label18_true-unreach-call.c [2018-10-24 21:08:25,755 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:08:25,764 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:08:25,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:08:25,824 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:08:25,825 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:08:25,825 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:08:25,825 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:08:25,826 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:08:25,826 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:08:25,826 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:08:25,826 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:08:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:08:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 21:08:25,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:25,866 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:25,868 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:25,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:25,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1436819431, now seen corresponding path program 1 times [2018-10-24 21:08:25,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:25,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:25,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:25,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:25,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:26,373 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:08:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:26,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:26,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:08:26,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:26,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:08:26,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:08:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:08:26,495 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 21:08:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:28,861 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-24 21:08:28,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:08:28,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-10-24 21:08:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:28,884 INFO L225 Difference]: With dead ends: 782 [2018-10-24 21:08:28,885 INFO L226 Difference]: Without dead ends: 487 [2018-10-24 21:08:28,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:08:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-24 21:08:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-24 21:08:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 21:08:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-10-24 21:08:28,993 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 41 [2018-10-24 21:08:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:28,994 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-10-24 21:08:28,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:08:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-10-24 21:08:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 21:08:29,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:29,001 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:29,002 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:29,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:29,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1751988327, now seen corresponding path program 1 times [2018-10-24 21:08:29,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:29,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:29,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:29,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:29,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:08:29,357 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:29,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:08:29,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:08:29,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:08:29,360 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-10-24 21:08:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:36,223 INFO L93 Difference]: Finished difference Result 1804 states and 3389 transitions. [2018-10-24 21:08:36,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:08:36,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-24 21:08:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:36,237 INFO L225 Difference]: With dead ends: 1804 [2018-10-24 21:08:36,237 INFO L226 Difference]: Without dead ends: 1328 [2018-10-24 21:08:36,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:08:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2018-10-24 21:08:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1286. [2018-10-24 21:08:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2018-10-24 21:08:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1955 transitions. [2018-10-24 21:08:36,325 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1955 transitions. Word has length 112 [2018-10-24 21:08:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:36,326 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1955 transitions. [2018-10-24 21:08:36,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:08:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1955 transitions. [2018-10-24 21:08:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 21:08:36,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:36,332 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:36,332 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:36,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1980785435, now seen corresponding path program 1 times [2018-10-24 21:08:36,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:36,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:36,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:36,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:36,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:36,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:36,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:08:36,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:36,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:08:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:08:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:08:36,653 INFO L87 Difference]: Start difference. First operand 1286 states and 1955 transitions. Second operand 6 states. [2018-10-24 21:08:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:40,681 INFO L93 Difference]: Finished difference Result 4497 states and 7274 transitions. [2018-10-24 21:08:40,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:08:40,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 21:08:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:40,712 INFO L225 Difference]: With dead ends: 4497 [2018-10-24 21:08:40,712 INFO L226 Difference]: Without dead ends: 3217 [2018-10-24 21:08:40,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2018-10-24 21:08:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3178. [2018-10-24 21:08:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2018-10-24 21:08:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4547 transitions. [2018-10-24 21:08:40,857 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4547 transitions. Word has length 122 [2018-10-24 21:08:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:40,857 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 4547 transitions. [2018-10-24 21:08:40,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:08:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4547 transitions. [2018-10-24 21:08:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 21:08:40,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:40,865 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:40,865 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:40,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash -171627092, now seen corresponding path program 1 times [2018-10-24 21:08:40,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:40,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:40,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:40,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:40,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:41,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:08:41,404 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:08:41,405 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-24 21:08:41,408 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:08:41,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:08:41,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:08:43,791 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:08:44,460 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:08:44,462 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:08:44,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:44,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:08:47,215 INFO L232 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 73.56% of their original sizes. [2018-10-24 21:08:47,215 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:08:47,745 INFO L413 sIntCurrentIteration]: We have 185 unified AI predicates [2018-10-24 21:08:47,745 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:08:47,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:08:47,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:08:47,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:47,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:08:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:08:47,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:47,749 INFO L87 Difference]: Start difference. First operand 3178 states and 4547 transitions. Second operand 7 states. [2018-10-24 21:09:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:39,678 INFO L93 Difference]: Finished difference Result 6542 states and 9305 transitions. [2018-10-24 21:09:39,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:09:39,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-10-24 21:09:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:39,697 INFO L225 Difference]: With dead ends: 6542 [2018-10-24 21:09:39,698 INFO L226 Difference]: Without dead ends: 3370 [2018-10-24 21:09:39,711 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:09:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2018-10-24 21:09:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3368. [2018-10-24 21:09:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3368 states. [2018-10-24 21:09:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4746 transitions. [2018-10-24 21:09:39,804 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4746 transitions. Word has length 186 [2018-10-24 21:09:39,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:39,804 INFO L481 AbstractCegarLoop]: Abstraction has 3368 states and 4746 transitions. [2018-10-24 21:09:39,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:09:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4746 transitions. [2018-10-24 21:09:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 21:09:39,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:39,810 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:39,811 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:39,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:39,811 INFO L82 PathProgramCache]: Analyzing trace with hash 525186115, now seen corresponding path program 1 times [2018-10-24 21:09:39,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:39,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:39,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:39,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:39,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 21:09:40,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:09:40,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:09:40,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:40,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:09:40,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:09:40,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:40,010 INFO L87 Difference]: Start difference. First operand 3368 states and 4746 transitions. Second operand 4 states. [2018-10-24 21:09:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:42,509 INFO L93 Difference]: Finished difference Result 9792 states and 15249 transitions. [2018-10-24 21:09:42,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:09:42,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2018-10-24 21:09:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:42,552 INFO L225 Difference]: With dead ends: 9792 [2018-10-24 21:09:42,553 INFO L226 Difference]: Without dead ends: 6620 [2018-10-24 21:09:42,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2018-10-24 21:09:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 6611. [2018-10-24 21:09:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6611 states. [2018-10-24 21:09:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 9750 transitions. [2018-10-24 21:09:42,772 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 9750 transitions. Word has length 239 [2018-10-24 21:09:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:42,773 INFO L481 AbstractCegarLoop]: Abstraction has 6611 states and 9750 transitions. [2018-10-24 21:09:42,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:09:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 9750 transitions. [2018-10-24 21:09:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 21:09:42,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:42,787 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:42,787 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:42,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:42,788 INFO L82 PathProgramCache]: Analyzing trace with hash -704671656, now seen corresponding path program 1 times [2018-10-24 21:09:42,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:42,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:42,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:42,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:42,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-24 21:09:43,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:09:43,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:09:43,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-24 21:09:43,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:09:43,597 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:09:43,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:09:47,724 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:10:37,491 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:10:37,492 INFO L272 AbstractInterpreter]: Visited 135 different actions 793 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 21:10:37,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:37,506 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:10:40,849 INFO L232 lantSequenceWeakener]: Weakened 32 states. On average, predicates are now at 77.37% of their original sizes. [2018-10-24 21:10:40,850 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:11:19,422 INFO L413 sIntCurrentIteration]: We have 269 unified AI predicates [2018-10-24 21:11:19,422 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:11:19,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:11:19,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-10-24 21:11:19,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:11:19,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:11:19,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:11:19,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:11:19,425 INFO L87 Difference]: Start difference. First operand 6611 states and 9750 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:12:19,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:12:19,306 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:12:19,311 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:12:19,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:12:19 BoogieIcfgContainer [2018-10-24 21:12:19,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:12:19,313 INFO L168 Benchmark]: Toolchain (without parser) took 239612.11 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -162.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:19,314 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:12:19,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1045.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:19,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 310.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:19,317 INFO L168 Benchmark]: Boogie Preprocessor took 177.33 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:12:19,317 INFO L168 Benchmark]: RCFGBuilder took 4498.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.7 MB). Peak memory consumption was 176.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:19,318 INFO L168 Benchmark]: TraceAbstraction took 233575.49 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 436.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:19,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1045.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 310.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.33 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4498.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.7 MB). Peak memory consumption was 176.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233575.49 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 436.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (6611states) and FLOYD_HOARE automaton (currently 10 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 127.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 873 SDtfs, 4285 SDslu, 865 SDs, 0 SdLazy, 6446 SolverSat, 1329 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 489 GetRequests, 427 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6611occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955597510663594 AbsIntWeakeningRatio, 0.12334801762114538 AbsIntAvgWeakeningVarsNumRemoved, 1063.2753303964757 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 970 NumberOfCodeBlocks, 970 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 964 ConstructedInterpolants, 0 QuantifiedInterpolants, 563470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 453/526 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown