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 0.1.23-69f5bdd-m [2018-09-19 08:01:49,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:49,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:49,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:49,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:49,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:49,659 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:49,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:49,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:49,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:49,667 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:49,667 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:49,668 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:49,669 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:49,673 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:49,674 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:49,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:49,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:49,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:49,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:49,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:49,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:49,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 08:01:49,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 08:01:49,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 08:01:49,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 08:01:49,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 08:01:49,706 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 08:01:49,707 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 08:01:49,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 08:01:49,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 08:01:49,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 08:01:49,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 08:01:49,714 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 08:01:49,715 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 08:01:49,715 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 08:01:49,716 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 [2018-09-19 08:01:49,745 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:49,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:49,746 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:49,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:49,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:49,747 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:49,747 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:49,747 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:49,747 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:49,747 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:49,748 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:49,748 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:49,748 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:49,749 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:49,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:49,749 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:49,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:49,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:49,750 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:49,750 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:49,750 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:49,750 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:49,750 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:49,751 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:49,751 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:49,751 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:49,751 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:49,751 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:49,752 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:49,752 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:49,752 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:49,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:49,752 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:49,753 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:49,753 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:49,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:49,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:49,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:49,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:49,828 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:49,829 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-19 08:01:50,168 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33fd9e03e/043479bba7ba433484e2afaed168cd94/FLAG9544ddddb [2018-09-19 08:01:50,342 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:50,343 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-19 08:01:50,349 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33fd9e03e/043479bba7ba433484e2afaed168cd94/FLAG9544ddddb [2018-09-19 08:01:50,364 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33fd9e03e/043479bba7ba433484e2afaed168cd94 [2018-09-19 08:01:50,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:50,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:50,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:50,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:50,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:50,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d64710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50, skipping insertion in model container [2018-09-19 08:01:50,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,405 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:50,608 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:50,627 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:50,635 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:50,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50 WrapperNode [2018-09-19 08:01:50,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:50,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:50,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:50,652 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:50,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:50,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:50,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:50,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:50,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (1/1) ... [2018-09-19 08:01:50,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:50,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:50,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:50,705 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:50,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (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 [2018-09-19 08:01:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure nondet [2018-09-19 08:01:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet [2018-09-19 08:01:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:51,238 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:51,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:51 BoogieIcfgContainer [2018-09-19 08:01:51,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:51,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:51,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:51,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:51,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:50" (1/3) ... [2018-09-19 08:01:51,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6920c40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:51, skipping insertion in model container [2018-09-19 08:01:51,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:50" (2/3) ... [2018-09-19 08:01:51,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6920c40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:51, skipping insertion in model container [2018-09-19 08:01:51,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:51" (3/3) ... [2018-09-19 08:01:51,247 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c [2018-09-19 08:01:51,257 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:51,265 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:51,315 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:51,316 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:51,316 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:51,316 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:51,316 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:51,316 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:51,317 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:51,317 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:51,317 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-19 08:01:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 08:01:51,344 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:51,345 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:51,346 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1030098894, now seen corresponding path program 1 times [2018-09-19 08:01:51,355 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:51,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-19 08:01:51,358 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [36], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-19 08:01:51,410 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:51,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:51,464 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:51,466 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-19 08:01:51,506 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:51,583 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 84.72% of their original sizes. [2018-09-19 08:01:51,583 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:51,687 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:51,689 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:51,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 08:01:51,689 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:51,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 08:01:51,704 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 08:01:51,705 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 08:01:51,708 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-09-19 08:01:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:52,026 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2018-09-19 08:01:52,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 08:01:52,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-09-19 08:01:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:52,037 INFO L225 Difference]: With dead ends: 55 [2018-09-19 08:01:52,038 INFO L226 Difference]: Without dead ends: 36 [2018-09-19 08:01:52,041 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 08:01:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-19 08:01:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2018-09-19 08:01:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-19 08:01:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-09-19 08:01:52,086 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2018-09-19 08:01:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:52,086 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-09-19 08:01:52,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 08:01:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-09-19 08:01:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 08:01:52,090 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:52,090 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] [2018-09-19 08:01:52,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1045124110, now seen corresponding path program 1 times [2018-09-19 08:01:52,095 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:52,096 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 08:01:52,096 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] [2018-09-19 08:01:52,099 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:52,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:52,174 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:52,175 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. [2018-09-19 08:01:52,215 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:52,287 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 62.04% of their original sizes. [2018-09-19 08:01:52,288 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:52,551 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:52,551 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:52,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 08:01:52,552 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:52,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 08:01:52,553 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 08:01:52,553 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-19 08:01:52,554 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2018-09-19 08:01:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:52,822 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-09-19 08:01:52,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 08:01:52,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-19 08:01:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:52,825 INFO L225 Difference]: With dead ends: 54 [2018-09-19 08:01:52,825 INFO L226 Difference]: Without dead ends: 39 [2018-09-19 08:01:52,827 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 [2018-09-19 08:01:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-19 08:01:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-09-19 08:01:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-19 08:01:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-19 08:01:52,840 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2018-09-19 08:01:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:52,840 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-19 08:01:52,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 08:01:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-19 08:01:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 08:01:52,842 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:52,842 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] [2018-09-19 08:01:52,843 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1102382412, now seen corresponding path program 1 times [2018-09-19 08:01:52,843 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:52,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 08:01:52,844 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] [2018-09-19 08:01:52,846 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:52,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:52,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:52,880 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. [2018-09-19 08:01:52,908 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:52,951 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 60.23% of their original sizes. [2018-09-19 08:01:52,951 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:53,633 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:53,634 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:53,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 08:01:53,634 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:53,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 08:01:53,635 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 08:01:53,635 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 08:01:53,636 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 10 states. [2018-09-19 08:01:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:54,330 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2018-09-19 08:01:54,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 08:01:54,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-09-19 08:01:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:54,334 INFO L225 Difference]: With dead ends: 62 [2018-09-19 08:01:54,334 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 08:01:54,335 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-19 08:01:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 08:01:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2018-09-19 08:01:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-19 08:01:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-09-19 08:01:54,346 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 24 [2018-09-19 08:01:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:54,347 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-09-19 08:01:54,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 08:01:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-09-19 08:01:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 08:01:54,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:54,348 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] [2018-09-19 08:01:54,349 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:54,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1438151120, now seen corresponding path program 1 times [2018-09-19 08:01:54,349 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:54,349 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 08:01:54,350 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] [2018-09-19 08:01:54,352 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:54,352 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:54,372 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:54,373 INFO L272 AbstractInterpreter]: Visited 22 different actions 57 times. Merged at 4 different actions 28 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-19 08:01:54,414 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:54,451 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 62.5% of their original sizes. [2018-09-19 08:01:54,451 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:54,921 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:54,921 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:54,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 08:01:54,922 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:54,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 08:01:54,922 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 08:01:54,923 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-19 08:01:54,924 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2018-09-19 08:01:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:55,569 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2018-09-19 08:01:55,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 08:01:55,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-09-19 08:01:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:55,573 INFO L225 Difference]: With dead ends: 76 [2018-09-19 08:01:55,574 INFO L226 Difference]: Without dead ends: 61 [2018-09-19 08:01:55,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-19 08:01:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-19 08:01:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2018-09-19 08:01:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-19 08:01:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-09-19 08:01:55,587 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 24 [2018-09-19 08:01:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:55,588 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-09-19 08:01:55,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 08:01:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-09-19 08:01:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 08:01:55,589 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:55,589 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] [2018-09-19 08:01:55,589 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1495409422, now seen corresponding path program 1 times [2018-09-19 08:01:55,590 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:55,590 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 08:01:55,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-19 08:01:55,592 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:55,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:55,611 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:55,611 INFO L272 AbstractInterpreter]: Visited 22 different actions 52 times. Merged at 4 different actions 24 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-19 08:01:55,625 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:55,656 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 62.5% of their original sizes. [2018-09-19 08:01:55,657 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:56,077 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:56,077 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:56,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 08:01:56,078 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:56,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 08:01:56,078 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 08:01:56,079 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-19 08:01:56,079 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 12 states. [2018-09-19 08:01:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:56,685 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2018-09-19 08:01:56,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 08:01:56,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-09-19 08:01:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:56,688 INFO L225 Difference]: With dead ends: 63 [2018-09-19 08:01:56,689 INFO L226 Difference]: Without dead ends: 61 [2018-09-19 08:01:56,689 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-19 08:01:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-19 08:01:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2018-09-19 08:01:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-19 08:01:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2018-09-19 08:01:56,701 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 24 [2018-09-19 08:01:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:56,702 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2018-09-19 08:01:56,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 08:01:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2018-09-19 08:01:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 08:01:56,703 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:56,703 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] [2018-09-19 08:01:56,703 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1493562380, now seen corresponding path program 1 times [2018-09-19 08:01:56,704 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:56,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 08:01:56,704 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [34], [42], [46], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-19 08:01:56,706 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:56,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:56,724 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 08:01:56,725 INFO L272 AbstractInterpreter]: Visited 23 different actions 53 times. Merged at 4 different actions 24 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-19 08:01:56,765 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 08:01:56,781 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 08:01:56,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:56 BoogieIcfgContainer [2018-09-19 08:01:56,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:56,783 INFO L168 Benchmark]: Toolchain (without parser) took 6406.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -480.3 MB). Peak memory consumption was 264.7 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:56,785 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-09-19 08:01:56,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.77 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. [2018-09-19 08:01:56,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.33 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. [2018-09-19 08:01:56,787 INFO L168 Benchmark]: Boogie Preprocessor took 27.35 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. [2018-09-19 08:01:56,788 INFO L168 Benchmark]: RCFGBuilder took 534.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:56,789 INFO L168 Benchmark]: TraceAbstraction took 5542.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 293.7 MB). Peak memory consumption was 293.7 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:56,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 270.77 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 25.33 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 27.35 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 534.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5542.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 293.7 MB). Peak memory consumption was 293.7 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 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, 5.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 119 SDtfs, 111 SDslu, 415 SDs, 0 SdLazy, 376 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8852272727272728 AbsIntWeakeningRatio, 0.6454545454545455 AbsIntAvgWeakeningVarsNumRemoved, 16.972727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 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-0-2018-09-19_08-01-56-816.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-0-2018-09-19_08-01-56-816.csv Received shutdown request...