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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:35,821 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:35,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:35,836 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:35,836 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:35,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:35,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:35,840 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:35,842 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:35,843 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:35,844 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:35,844 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:35,845 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:35,846 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:35,847 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:35,848 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:35,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:35,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:35,853 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:35,855 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:35,856 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:35,857 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:35,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 17:20:35,860 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 17:20:35,860 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 17:20:35,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 17:20:35,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 17:20:35,865 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 17:20:35,867 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 17:20:35,868 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 17:20:35,868 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 17:20:35,869 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 17:20:35,869 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 17:20:35,869 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 17:20:35,872 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 17:20:35,873 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 17:20:35,874 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 17:20:35,909 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:35,910 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:35,911 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:35,911 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:35,911 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:35,911 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:35,911 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:35,912 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:35,912 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:35,912 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:35,912 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:35,912 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:35,913 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:35,914 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:35,914 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:35,914 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:35,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:35,915 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:35,915 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:35,915 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:35,915 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:35,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:35,916 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:35,916 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:35,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:35,916 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:35,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:35,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:35,918 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:35,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:35,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:35,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:35,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:35,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:35,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:35,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:35,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:35,997 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:35,997 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:35,998 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-15 17:20:36,342 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325c0d30e/c8ec8adf7fac49d394f9a02170275559/FLAG746466f99 [2018-09-15 17:20:36,530 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:36,531 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-15 17:20:36,540 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325c0d30e/c8ec8adf7fac49d394f9a02170275559/FLAG746466f99 [2018-09-15 17:20:36,563 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325c0d30e/c8ec8adf7fac49d394f9a02170275559 [2018-09-15 17:20:36,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:36,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:36,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:36,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:36,582 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:36,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248ae8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36, skipping insertion in model container [2018-09-15 17:20:36,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,596 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:36,784 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:36,802 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:36,809 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:36,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36 WrapperNode [2018-09-15 17:20:36,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:36,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:36,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:36,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:36,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:36,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:36,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:36,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:36,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (1/1) ... [2018-09-15 17:20:36,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:36,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:36,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:36,871 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:36,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (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 [2018-09-15 17:20:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure nondet [2018-09-15 17:20:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet [2018-09-15 17:20:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:37,384 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:37,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:37 BoogieIcfgContainer [2018-09-15 17:20:37,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:37,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:37,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:37,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:37,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:36" (1/3) ... [2018-09-15 17:20:37,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5702a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:37, skipping insertion in model container [2018-09-15 17:20:37,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:36" (2/3) ... [2018-09-15 17:20:37,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5702a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:37, skipping insertion in model container [2018-09-15 17:20:37,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:37" (3/3) ... [2018-09-15 17:20:37,404 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c [2018-09-15 17:20:37,414 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:37,420 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:37,467 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:37,467 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:37,468 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:37,468 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:37,468 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:37,468 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:37,468 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:37,469 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:37,469 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-15 17:20:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-15 17:20:37,496 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:37,497 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:37,498 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1030098894, now seen corresponding path program 1 times [2018-09-15 17:20:37,507 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:37,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-15 17:20:37,510 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [36], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:37,561 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:37,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:37,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:37,618 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 17:20:37,646 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:37,725 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 84.72% of their original sizes. [2018-09-15 17:20:37,725 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:37,835 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:37,838 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:37,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 17:20:37,839 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:37,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 17:20:37,852 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 17:20:37,853 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:37,856 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-09-15 17:20:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:38,141 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2018-09-15 17:20:38,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 17:20:38,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-09-15 17:20:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:38,153 INFO L225 Difference]: With dead ends: 55 [2018-09-15 17:20:38,154 INFO L226 Difference]: Without dead ends: 36 [2018-09-15 17:20:38,157 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-15 17:20:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2018-09-15 17:20:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-15 17:20:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-09-15 17:20:38,203 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2018-09-15 17:20:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:38,204 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-09-15 17:20:38,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 17:20:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-09-15 17:20:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 17:20:38,206 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:38,206 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:38,206 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1045124110, now seen corresponding path program 1 times [2018-09-15 17:20:38,207 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:38,207 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 17:20:38,208 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:38,210 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:38,211 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:38,304 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:38,305 INFO L272 AbstractInterpreter]: Visited 18 different actions 66 times. Merged at 4 different actions 38 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 17:20:38,345 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:38,397 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 62.04% of their original sizes. [2018-09-15 17:20:38,397 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:38,830 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:38,830 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:38,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 17:20:38,831 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:38,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 17:20:38,832 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 17:20:38,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:38,833 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2018-09-15 17:20:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:39,106 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-09-15 17:20:39,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 17:20:39,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-15 17:20:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:39,110 INFO L225 Difference]: With dead ends: 54 [2018-09-15 17:20:39,110 INFO L226 Difference]: Without dead ends: 39 [2018-09-15 17:20:39,112 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-15 17:20:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-09-15 17:20:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-15 17:20:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-15 17:20:39,122 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2018-09-15 17:20:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:39,123 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-15 17:20:39,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 17:20:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-15 17:20:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 17:20:39,124 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:39,124 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:39,125 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1102382412, now seen corresponding path program 1 times [2018-09-15 17:20:39,125 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:39,126 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 17:20:39,126 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:39,128 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:39,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:39,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:39,172 INFO L272 AbstractInterpreter]: Visited 22 different actions 60 times. Merged at 4 different actions 30 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 17:20:39,196 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:39,238 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 60.23% of their original sizes. [2018-09-15 17:20:39,238 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:39,767 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:39,768 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:39,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 17:20:39,768 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:39,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 17:20:39,769 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 17:20:39,772 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-15 17:20:39,772 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 10 states. [2018-09-15 17:20:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:40,501 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2018-09-15 17:20:40,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-15 17:20:40,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-09-15 17:20:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:40,504 INFO L225 Difference]: With dead ends: 62 [2018-09-15 17:20:40,504 INFO L226 Difference]: Without dead ends: 47 [2018-09-15 17:20:40,505 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-15 17:20:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-15 17:20:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2018-09-15 17:20:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-15 17:20:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-09-15 17:20:40,516 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 24 [2018-09-15 17:20:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:40,516 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-09-15 17:20:40,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 17:20:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-09-15 17:20:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 17:20:40,518 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:40,518 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:40,518 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:40,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1438151120, now seen corresponding path program 1 times [2018-09-15 17:20:40,519 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:40,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 17:20:40,519 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:40,521 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:40,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:40,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:40,528 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 17:20:40,533 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:40,563 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 67.65% of their original sizes. [2018-09-15 17:20:40,564 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:40,815 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:40,815 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:40,816 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 17:20:40,816 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:40,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 17:20:40,817 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 17:20:40,817 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:40,818 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2018-09-15 17:20:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:41,090 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2018-09-15 17:20:41,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 17:20:41,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-15 17:20:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:41,094 INFO L225 Difference]: With dead ends: 67 [2018-09-15 17:20:41,094 INFO L226 Difference]: Without dead ends: 52 [2018-09-15 17:20:41,095 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-15 17:20:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-09-15 17:20:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-15 17:20:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-09-15 17:20:41,109 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 24 [2018-09-15 17:20:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:41,110 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-09-15 17:20:41,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 17:20:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-09-15 17:20:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-15 17:20:41,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:41,112 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:41,112 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1472263337, now seen corresponding path program 1 times [2018-09-15 17:20:41,112 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:41,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-15 17:20:41,113 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:41,115 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:41,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:41,178 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:41,181 INFO L272 AbstractInterpreter]: Visited 23 different actions 103 times. Merged at 6 different actions 55 times. Widened at 1 different actions 8 times. Found 15 fixpoints after 5 different actions. Largest state had 8 variables. [2018-09-15 17:20:41,206 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:41,251 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-09-15 17:20:41,251 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:41,897 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:41,898 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:41,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-15 17:20:41,898 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:41,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-15 17:20:41,899 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-15 17:20:41,899 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-15 17:20:41,899 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 12 states. [2018-09-15 17:20:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:42,398 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2018-09-15 17:20:42,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 17:20:42,399 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-09-15 17:20:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:42,400 INFO L225 Difference]: With dead ends: 74 [2018-09-15 17:20:42,400 INFO L226 Difference]: Without dead ends: 59 [2018-09-15 17:20:42,401 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-15 17:20:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2018-09-15 17:20:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-15 17:20:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-09-15 17:20:42,417 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 28 [2018-09-15 17:20:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:42,418 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-09-15 17:20:42,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-15 17:20:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-09-15 17:20:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-15 17:20:42,419 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:42,419 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:42,419 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1415005035, now seen corresponding path program 1 times [2018-09-15 17:20:42,420 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:42,420 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-15 17:20:42,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:42,423 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:42,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:42,499 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:42,499 INFO L272 AbstractInterpreter]: Visited 23 different actions 100 times. Merged at 8 different actions 52 times. Widened at 1 different actions 7 times. Found 13 fixpoints after 4 different actions. Largest state had 8 variables. [2018-09-15 17:20:42,505 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:42,543 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-09-15 17:20:42,544 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:42,949 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:42,949 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:42,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-15 17:20:42,949 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:42,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-15 17:20:42,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-15 17:20:42,950 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-15 17:20:42,950 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 12 states. [2018-09-15 17:20:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:43,382 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2018-09-15 17:20:43,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 17:20:43,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-09-15 17:20:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:43,386 INFO L225 Difference]: With dead ends: 67 [2018-09-15 17:20:43,386 INFO L226 Difference]: Without dead ends: 65 [2018-09-15 17:20:43,387 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-15 17:20:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2018-09-15 17:20:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-15 17:20:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2018-09-15 17:20:43,401 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 28 [2018-09-15 17:20:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:43,401 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2018-09-15 17:20:43,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-15 17:20:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2018-09-15 17:20:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-15 17:20:43,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:43,403 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:43,403 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:43,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1416852077, now seen corresponding path program 1 times [2018-09-15 17:20:43,404 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:43,404 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-15 17:20:43,404 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [46], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 17:20:43,406 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:43,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:43,442 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:43,443 INFO L272 AbstractInterpreter]: Visited 24 different actions 98 times. Merged at 7 different actions 51 times. Widened at 1 different actions 7 times. Found 14 fixpoints after 5 different actions. Largest state had 8 variables. [2018-09-15 17:20:43,454 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:43,471 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:43,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:43 BoogieIcfgContainer [2018-09-15 17:20:43,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:43,473 INFO L168 Benchmark]: Toolchain (without parser) took 6899.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -378.0 MB). Peak memory consumption was 384.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:43,475 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. [2018-09-15 17:20:43,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.42 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:43,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:43,477 INFO L168 Benchmark]: Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:43,477 INFO L168 Benchmark]: RCFGBuilder took 514.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:43,479 INFO L168 Benchmark]: TraceAbstraction took 6081.09 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: 424.2 MB). Peak memory consumption was 424.2 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:43,483 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 247.42 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 514.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6081.09 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: 424.2 MB). Peak memory consumption was 424.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L7] int last ; [L22] CALL, EXPR nondet() [L17] int x; [L18] RET return x; [L22] EXPR nondet() [L22] last = nondet() [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L24] COND TRUE 1 [L25] st=1 [L26] c=0 [L26] COND TRUE c<200000 [L27] COND FALSE !(c==last) [L26] c++ [L26] c++ [L26] COND TRUE c<200000 [L27] COND TRUE c==last [L27] st = 0 [L26] c++ [L26] c++ [L26] COND FALSE !(c<200000) [L28] COND FALSE !(st==0 && c==last+1) [L30] a+=2 [L30] b+=2 [L31] COND TRUE c==last && st==0 [L32] a = a+1 [L33] CALL __VERIFIER_assert(a==b && c==200000) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNKNOWN Result, 6.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 107 SDslu, 479 SDs, 0 SdLazy, 414 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.8918439716312057 AbsIntWeakeningRatio, 0.624113475177305 AbsIntAvgWeakeningVarsNumRemoved, 15.546099290780141 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-43-495.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-43-495.csv Received shutdown request...