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/Problem17_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:53:30,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:53:30,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:53:30,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:53:30,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:53:30,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:53:30,454 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:53:30,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:53:30,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:53:30,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:53:30,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:53:30,467 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:53:30,468 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:53:30,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:53:30,470 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:53:30,471 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:53:30,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:53:30,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:53:30,485 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:53:30,487 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:53:30,491 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:53:30,492 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:53:30,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:53:30,513 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 03:53:30,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:53:30,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:53:30,531 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:53:30,531 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:53:30,531 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:53:30,531 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:53:30,531 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:53:30,532 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:53:30,532 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:53:30,532 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:53:30,532 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:53:30,533 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:53:30,533 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:53:30,533 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:53:30,534 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:53:30,534 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:53:30,534 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:53:30,534 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:53:30,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:53:30,535 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:53:30,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:53:30,535 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:53:30,535 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:53:30,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:53:30,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:53:30,536 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:53:30,536 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:53:30,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:53:30,537 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:53:30,537 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:53:30,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:53:30,537 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:53:30,538 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:53:30,538 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:53:30,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:53:30,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:53:30,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:53:30,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:53:30,603 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:53:30,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-11-07 03:53:30,679 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764bd5adc/aa3852a22f8e43919971ce7ec0616077/FLAGc09958a46 [2018-11-07 03:53:31,434 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:53:31,436 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-11-07 03:53:31,462 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764bd5adc/aa3852a22f8e43919971ce7ec0616077/FLAGc09958a46 [2018-11-07 03:53:31,481 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764bd5adc/aa3852a22f8e43919971ce7ec0616077 [2018-11-07 03:53:31,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:53:31,497 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:53:31,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:53:31,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:53:31,503 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:53:31,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:31" (1/1) ... [2018-11-07 03:53:31,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d73b804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:31, skipping insertion in model container [2018-11-07 03:53:31,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:31" (1/1) ... [2018-11-07 03:53:31,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:53:31,648 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:53:32,706 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:53:32,711 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:53:33,158 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:53:33,183 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:53:33,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33 WrapperNode [2018-11-07 03:53:33,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:53:33,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:53:33,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:53:33,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:53:33,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:53:33,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:53:33,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:53:33,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:53:33,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (1/1) ... [2018-11-07 03:53:33,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:53:33,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:53:33,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:53:33,695 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:53:33,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (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 03:53:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:53:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:53:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:53:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:53:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:53:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:53:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:53:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:53:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:53:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:53:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:53:42,804 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:53:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:42 BoogieIcfgContainer [2018-11-07 03:53:42,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:53:42,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:53:42,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:53:42,810 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:53:42,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:53:31" (1/3) ... [2018-11-07 03:53:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb04a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:42, skipping insertion in model container [2018-11-07 03:53:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:33" (2/3) ... [2018-11-07 03:53:42,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb04a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:42, skipping insertion in model container [2018-11-07 03:53:42,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:42" (3/3) ... [2018-11-07 03:53:42,814 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label12_true-unreach-call.c [2018-11-07 03:53:42,824 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:53:42,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:53:42,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:53:42,900 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:53:42,901 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:53:42,901 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:53:42,901 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:53:42,901 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:53:42,901 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:53:42,902 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:53:42,902 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:53:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 03:53:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 03:53:42,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:53:42,977 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] [2018-11-07 03:53:42,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:53:42,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:53:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1805373012, now seen corresponding path program 1 times [2018-11-07 03:53:42,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:53:43,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:53:43,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:53:43,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:53:43,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:53:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:53:43,517 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 03:53:43,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:53:43,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:53:43,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:53:43,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:53:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:53:43,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:53:43,576 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 03:53:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:53:52,909 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-11-07 03:53:52,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:53:52,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-11-07 03:53:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:53:52,954 INFO L225 Difference]: With dead ends: 2139 [2018-11-07 03:53:52,954 INFO L226 Difference]: Without dead ends: 1529 [2018-11-07 03:53:52,964 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:53:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-11-07 03:53:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-11-07 03:53:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-11-07 03:53:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-11-07 03:53:53,114 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 40 [2018-11-07 03:53:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:53:53,115 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-11-07 03:53:53,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:53:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-11-07 03:53:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 03:53:53,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:53:53,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:53,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:53:53,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:53:53,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2053053534, now seen corresponding path program 1 times [2018-11-07 03:53:53,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:53:53,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:53:53,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:53:53,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:53:53,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:53:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:53:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:53:53,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:53:53,506 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:53:53,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2018-11-07 03:53:53,510 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [930], [932], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 03:53:53,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:53:53,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:53:55,227 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:54:14,862 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:54:14,864 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 03:54:14,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:54:14,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:54:14,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:54:14,913 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:54:14,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:54:14,928 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:54:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:54:15,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:54:36,151 WARN L179 SmtUtils]: Spent 20.44 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-07 03:54:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:54:38,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:54:39,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-07 03:54:41,785 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2018-11-07 03:54:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:54:42,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 03:54:42,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 03:54:42,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:54:42,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:54:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:54:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2018-11-07 03:54:42,216 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 03:57:53,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:57:53,586 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:57:53,591 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:57:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:57:53 BoogieIcfgContainer [2018-11-07 03:57:53,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:57:53,592 INFO L168 Benchmark]: Toolchain (without parser) took 262097.00 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -248.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,593 INFO L168 Benchmark]: CDTParser took 0.23 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 03:57:53,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1686.85 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 257.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -961.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,596 INFO L168 Benchmark]: Boogie Preprocessor took 250.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,597 INFO L168 Benchmark]: RCFGBuilder took 9110.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 458.4 MB). Peak memory consumption was 458.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,598 INFO L168 Benchmark]: TraceAbstraction took 250785.61 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 103.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 03:57:53,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1686.85 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 257.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -961.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 250.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9110.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 458.4 MB). Peak memory consumption was 458.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250785.61 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 103.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 107). Cancelled while BasicCegarLoop was constructing difference of abstraction (1527states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3804 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 250.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 200.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 669 SDtfs, 2900 SDslu, 399 SDs, 0 SdLazy, 5053 SolverSat, 1519 SolverUnsat, 95 SolverUnknown, 0 SolverNotchecked, 197.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1527occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 381 ConstructedInterpolants, 114 QuantifiedInterpolants, 665193 SizeOfPredicates, 3 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 37/99 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown