java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:36:11,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:36:11,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:36:11,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:36:11,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:36:11,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:36:11,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:36:11,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:36:11,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:36:11,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:36:11,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:36:11,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:36:11,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:36:11,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:36:11,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:36:11,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:36:11,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:36:11,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:36:11,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:36:11,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:36:11,646 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:36:11,648 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:36:11,650 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:36:11,657 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:36:11,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:36:11,658 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:36:11,659 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:36:11,659 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:36:11,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:36:11,675 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:36:11,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:36:11,676 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:36:11,676 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:36:11,676 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:36:11,676 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:36:11,677 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:36:11,677 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:36:11,677 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:36:11,677 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:36:11,677 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:36:11,678 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:36:11,678 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:36:11,678 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:36:11,678 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:36:11,679 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:36:11,679 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:36:11,679 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:36:11,679 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:36:11,679 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:36:11,680 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:36:11,680 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:36:11,680 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:36:11,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:36:11,680 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:36:11,681 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:36:11,681 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:36:11,681 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:36:11,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:36:11,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:36:11,682 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:36:11,682 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:36:11,682 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:36:11,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:36:11,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:36:11,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:36:11,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:36:11,746 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:36:11,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44_false-unreach-call.c [2018-11-07 00:36:11,822 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71b118a0/bb0017f9c19348029db4c12e38a42c81/FLAG7735d7085 [2018-11-07 00:36:12,485 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:36:12,487 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label44_false-unreach-call.c [2018-11-07 00:36:12,510 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71b118a0/bb0017f9c19348029db4c12e38a42c81/FLAG7735d7085 [2018-11-07 00:36:12,528 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71b118a0/bb0017f9c19348029db4c12e38a42c81 [2018-11-07 00:36:12,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:36:12,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:36:12,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:36:12,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:36:12,546 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:36:12,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:12" (1/1) ... [2018-11-07 00:36:12,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2838e893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:12, skipping insertion in model container [2018-11-07 00:36:12,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:12" (1/1) ... [2018-11-07 00:36:12,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:36:12,670 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:36:13,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:36:13,623 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:36:13,961 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:36:13,982 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:36:13,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13 WrapperNode [2018-11-07 00:36:13,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:36:13,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:36:13,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:36:13,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:36:13,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:36:14,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:36:14,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:36:14,092 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:36:14,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... [2018-11-07 00:36:14,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:36:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:36:14,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:36:14,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:36:14,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:36:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:36:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:36:14,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:36:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:36:14,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:36:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:36:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:36:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:36:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:36:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:36:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:36:20,751 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:36:20,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:20 BoogieIcfgContainer [2018-11-07 00:36:20,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:36:20,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:36:20,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:36:20,759 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:36:20,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:12" (1/3) ... [2018-11-07 00:36:20,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a90c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:20, skipping insertion in model container [2018-11-07 00:36:20,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:13" (2/3) ... [2018-11-07 00:36:20,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a90c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:20, skipping insertion in model container [2018-11-07 00:36:20,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:20" (3/3) ... [2018-11-07 00:36:20,763 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label44_false-unreach-call.c [2018-11-07 00:36:20,774 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:36:20,785 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:36:20,806 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:36:20,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:36:20,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:36:20,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:36:20,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:36:20,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:36:20,865 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:36:20,865 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:36:20,865 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:36:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 00:36:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 00:36:20,925 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:36:20,926 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] [2018-11-07 00:36:20,930 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:36:20,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:36:20,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1931108421, now seen corresponding path program 1 times [2018-11-07 00:36:20,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:36:21,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:21,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:36:21,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:21,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:36:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:36:21,452 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:36:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:36:21,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:36:21,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:36:21,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:36:21,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:36:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:36:21,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:36:21,620 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 00:36:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:36:25,164 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 00:36:25,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:36:25,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-07 00:36:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:36:25,201 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 00:36:25,201 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 00:36:25,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:36:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 00:36:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 00:36:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 00:36:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-07 00:36:25,327 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 37 [2018-11-07 00:36:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:36:25,328 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-07 00:36:25,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:36:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-07 00:36:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 00:36:25,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:36:25,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:36:25,336 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:36:25,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:36:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash 133481241, now seen corresponding path program 1 times [2018-11-07 00:36:25,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:36:25,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:25,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:36:25,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:25,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:36:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:36:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:36:25,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:36:25,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:36:25,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:36:25,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:36:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:36:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:36:25,625 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-07 00:36:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:36:33,659 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-07 00:36:33,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:36:33,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-11-07 00:36:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:36:33,680 INFO L225 Difference]: With dead ends: 2846 [2018-11-07 00:36:33,680 INFO L226 Difference]: Without dead ends: 2108 [2018-11-07 00:36:33,688 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:36:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-07 00:36:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-07 00:36:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-07 00:36:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-07 00:36:33,778 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 110 [2018-11-07 00:36:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:36:33,779 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-07 00:36:33,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:36:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-07 00:36:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 00:36:33,784 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:36:33,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:36:33,785 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:36:33,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:36:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash 851745708, now seen corresponding path program 1 times [2018-11-07 00:36:33,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:36:33,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:33,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:36:33,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:33,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:36:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:36:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:36:34,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:36:34,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:36:34,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:36:34,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:36:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:36:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:36:34,111 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-07 00:36:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:36:38,531 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-07 00:36:38,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:36:38,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 00:36:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:36:38,555 INFO L225 Difference]: With dead ends: 5549 [2018-11-07 00:36:38,556 INFO L226 Difference]: Without dead ends: 3465 [2018-11-07 00:36:38,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:36:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-07 00:36:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-07 00:36:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-07 00:36:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-07 00:36:38,668 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 139 [2018-11-07 00:36:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:36:38,668 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-07 00:36:38,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:36:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-07 00:36:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 00:36:38,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:36:38,676 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:36:38,676 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:36:38,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:36:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1311109898, now seen corresponding path program 1 times [2018-11-07 00:36:38,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:36:38,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:38,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:36:38,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:36:38,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:36:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:36:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 60 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:36:38,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:36:38,969 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:36:38,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-07 00:36:38,972 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:36:39,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:36:39,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:36:41,973 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:36:41,975 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:36:42,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:36:42,001 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:36:43,931 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 77.71% of their original sizes. [2018-11-07 00:36:43,931 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:36:44,373 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-07 00:36:44,373 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:36:44,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:36:44,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:36:44,375 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:36:44,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:36:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:36:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:36:44,376 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 7 states. [2018-11-07 00:36:47,023 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:37:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:37:09,889 INFO L93 Difference]: Finished difference Result 7200 states and 10779 transitions. [2018-11-07 00:37:09,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:37:09,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-11-07 00:37:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:37:09,908 INFO L225 Difference]: With dead ends: 7200 [2018-11-07 00:37:09,909 INFO L226 Difference]: Without dead ends: 3773 [2018-11-07 00:37:09,920 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:37:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2018-11-07 00:37:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3771. [2018-11-07 00:37:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2018-11-07 00:37:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5470 transitions. [2018-11-07 00:37:10,010 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5470 transitions. Word has length 250 [2018-11-07 00:37:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:37:10,011 INFO L480 AbstractCegarLoop]: Abstraction has 3771 states and 5470 transitions. [2018-11-07 00:37:10,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:37:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5470 transitions. [2018-11-07 00:37:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-07 00:37:10,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:37:10,020 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:37:10,020 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:37:10,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:37:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -816156199, now seen corresponding path program 1 times [2018-11-07 00:37:10,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:37:10,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:37:10,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:37:10,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:37:10,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:37:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:37:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 96 proven. 206 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 00:37:10,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:37:10,364 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:37:10,364 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-11-07 00:37:10,365 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:37:10,371 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:37:10,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:37:11,575 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:37:22,602 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:37:22,602 INFO L272 AbstractInterpreter]: Visited 120 different actions 461 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:37:22,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:37:22,612 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:37:26,079 INFO L227 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-07 00:37:26,080 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:39:06,964 INFO L415 sIntCurrentIteration]: We unified 341 AI predicates to 341 [2018-11-07 00:39:06,964 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:39:06,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:39:06,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 00:39:06,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:39:06,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 00:39:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 00:39:06,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-07 00:39:06,967 INFO L87 Difference]: Start difference. First operand 3771 states and 5470 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 00:40:19,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 00:40:19,425 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:40:19,430 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:40:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:40:19 BoogieIcfgContainer [2018-11-07 00:40:19,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:40:19,432 INFO L168 Benchmark]: Toolchain (without parser) took 246892.15 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -317.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,433 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:40:19,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1441.35 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.37 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 90.7 MB). Free memory was 1.3 GB in the beginning and 1.6 GB in the end (delta: -229.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,436 INFO L168 Benchmark]: Boogie Preprocessor took 137.45 ms. Allocated memory is still 1.6 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,436 INFO L168 Benchmark]: RCFGBuilder took 6523.43 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 738.2 MB). Free memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: -482.7 MB). Peak memory consumption was 274.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,437 INFO L168 Benchmark]: TraceAbstraction took 238677.31 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 296.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:40:19,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1441.35 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 107.37 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 90.7 MB). Free memory was 1.3 GB in the beginning and 1.6 GB in the end (delta: -229.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.45 ms. Allocated memory is still 1.6 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6523.43 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 738.2 MB). Free memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: -482.7 MB). Peak memory consumption was 274.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238677.31 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 296.2 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: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (3771states) and FLOYD_HOARE automaton (currently 16 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (363 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 238.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 114.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 747 SDtfs, 5740 SDslu, 378 SDs, 0 SdLazy, 7499 SolverSat, 2583 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 623 GetRequests, 395 SyntacticMatches, 186 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 103.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3771occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995857897322525 AbsIntWeakeningRatio, 0.09830508474576272 AbsIntAvgWeakeningVarsNumRemoved, 395.1 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 878 NumberOfCodeBlocks, 878 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 873 ConstructedInterpolants, 0 QuantifiedInterpolants, 676473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 295/598 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown